Wednesday Titles

Program overview

MEDIA EMBARGO NOTICE: All abstracts are embargoed until the time of presentation at the AAS meeting. "Time of presentation" means the time at which the Oral or Display paper session is scheduled to begin. Please consult our Press Officer for further information.


Session 73. Warner Prize Lecture

Invited, Wednesday, 8:30am - 9:20am, Ballroom I (Tucson Convention Center)

73.01 Cosmic Microwave Background Observations and the Origin of Large Scale Structure
D. N. Spergel (Dept. of Astrophysical Sciences, Princeton University)

Session 74. Clusters of Galaxies II: X-Rays

Display, Wednesday, 9:20am - 6:30pm, Exhibit Hall A (Tucson Convention Center)

74.01 Evolution of X-ray Luminosity Function of Rich Abell Clusters
L. P. David, W. Forman and C. Jones (SAO)
74.02 ASCA Spectroscopy of the Cooling Flow Cluster Abell 85
A. Prestwich (SAO) and S. Daines (UC Berkley)
74.03 A Search for X-Ray Substructure in Cooling Flows
H. S. Thompson (University of Arizona) and A. Prestwich (SAO)
74.04 X-ray and Optical Determinations of the Mass Distribution in the Cluster of Galaxies Abell 548
K. Dow, C. Jones and L. David (SAO)
74.05 The X-Ray Fundamental Plane of Clusters of Galaxies
J. Annis (Fermilab)
74.06 K-Band Galaxy Luminosity Functions in X-Ray Selected Clusters at z=1/3
J. P. Gardner (Durham) and J. T. Annis (Fermilab)
74.07 The Cold Absorber in Clusters of Galaxies: New ASCA Observations and Models
M. W. Wise (MIT/ASC) and C. L. Sarazin (UVa)
74.08 Simulations of the Formation and Evolution of Poor X-ray Clusters in CHDM
G. L. Bryan (UIUC/NCSA), A. Klypin, C. Loken (NMSU), M. L. Norman (UIUC/NCSA) and J. O. Burns (NMSU)
74.09 Hierarchical Numerical Cosmology with Hydrodynamics: Resolving X-Ray Clusters
P. Anninos and M. L. Norman (LCA, NCSA)
74.10 A Deep ROSAT Survey of the Lynx.3A Region
D. F. Mathis, R. A. Windhorst, D. Burstein, B. E. Franklin (ASU), S. F. Anderson (U.Wash.), T. Maccacaro (Osservatorio Astronomico di Brera), R. E. Griffiths, L. W. Neuschaefer (JHU), W. A. Morgan (PSU), D. C. Koo, C. Gronwall (UCSC) and C. N. A. Willmer (DAN Observatorio Nacional)
74.11 HEAO-1 A2 Maps of the Hard X-ray Sky
K. Jahoda, J. S. Allen and L. A. Whitlock (NASA/GSFC)
74.12 $ASCA$ Observations of the Cool Cluster A262
R. E. White III (Univ. of Alabama) and C. S. R. Day (NASA/GSFC/USRA)
74.13 A New X-Ray--Discovered Cluster of Galaxies Associated with CL0016+16
J. P. Hughes, M. Birkinshaw and J. P. Huchra (SAO)
74.14 Cluster X-Ray Substructure and Radio Galaxy Correlations
M. J. Ledlow and J. O. Burns (New Mexico State University)
74.15 X-ray Cluster Evolution and Projection Effects in a CHDM Universe
C. Loken, A. Klypin, J. Burns (NMSU), G. Bryan and M. Norman (U. Illinois, NCSA)
74.16 ROSAT Observations of Clusters in Bimodal Systems
M. J. Henriksen (University of Alabama)
74.17 Diffuse X-ray Emission in Groups of Galaxies
J. S. Mulchaey (OCIW), D. S. Davis (U. of Alabama), R. F. Mushotzky (NASA/GSFC) and D. Burstein (Arizona State University)
74.18 ROSAT Observations of 5 Poor Galaxy Clusters with Extended Radio Sources
S. Doe (NMSU), M. Ledlow (NMSU), J. O. Burns (NMSU) and R. A. White (NASA/GSFC)

Session 75. Interacting Galaxies and Starbursts

Display, Wednesday, 9:20am - 6:30pm, Exhibit Hall A (Tucson Convention Center)

75.01 Disk Instabilities in Interacting Ring Galaxies
R. A. Gerber (NASA Ames / NRC)
75.02 Massive Star Formation And Gas Threshold Effects In Ring Galaxies: The Cartwheel And AM0644-741
J. L. Higdon (NRAO), J. F. Wallin (George Mason U.), L. Staveley-Smith (CSIRO) and S. D. Lord (IPAC)
75.03 Blue Interacting Disk Galaxies: Massive Stellar Contents from IUE and Optical Observations
A. Baleisis (UIUC), S. A. Lamb (UIUC) and H. A. Bushouse (STSCI)
75.04 Off-Center Collisions Involving Rotating Disk Galaxies: 3-D Numerical Simulations
S. A. Lamb (UIUC), R. A. Gerber (NASA-Ames) and D. S. Balsara (UIUC)
75.05 IUE Spectra for Selected Compact Group Galaxies
M. Rodrigue, P. Rogers, T. Colegrove, J. Thompson (UNR), A. Schultz (CSC/STScI), J. Sulentic (U. Alabama), K. Borne (AURA/STScI) and L. Spight (UNLV)
75.06 The Formation of Globular Clusters in Galaxy Mergers
S. Zepf (University of California, Berkeley), K. Ashman (University of Kansas), D. Carter (Royal Greenwich Observatory), J. English (Queen's University), K. Freeman (Mt. Stromlo Observatory) and R. Sharples (University of Durham)
75.07 Multiphase Models of Gas Dynamics in Collisional Ring Galaxies
C. Struck (Iowa State)
75.08 Gaseous Dissipation in Major Mergers
L. Hernquist and J. C. Mihos (UC Santa Cruz)
75.09 The Dynamics of the Large-Scale Wind in M82
P. L. Shopbell (Rice University) and J. Bland-Hawthorn (Anglo Australian Observatory)
75.10 The {\it IRAS\/} Very Faint Source Survey Catalog and Redshift Survey
M. Moshir (IPAC/Caltech/JPL) and G. Aldering (OCIW and U Minn)
75.11 On Supernova Rates in Nearby Starburst Galaxies
G. L. Case, D. Bhattacharya, A. D. Zych (U. C. Riverside) and L. -S. The (Clemson Univ.)
75.12 WFPC2 Observations of the Nuclear Starburst in NGC 253
A. M. Watson (Lowell Observatory), J. S. Gallagher (University of Wisconsin -- Madison), J. J. Hester, P. A. Scowen (Arizona State University), G. E. Ballester (University of Michigan), C. J. Burrows (STScI and ESA), S. Casertano (Johns Hopkins University), J. T. Clarke (University of Michigan), D. Crisp (JPL), R. W. Evans (JPL), R. E. Griffiths (Johns Hopkins University), J. G. Hoessel (University of Wisconsin -- Madison), J. A. Holtzman (Lowell Observatory), J. R. Mould (Australian National University), K. R. Stapelfeldt (JPL), J. T. Trauger (JPL) and J. A. Westphal (Caltech)
75.13 A Near Infrared Study of NGC 6946
C. W. Engelbracht, M. J. Rieke, G. H. Rieke (Steward Observatory, University of Arizona, Tucson, AZ 85721) and W. B. Latter (National Radio Astronomy Observatory, 949 N. Cherry Ave., Tucson, AZ 85721)
75.14 Multiphase Simulations of Starburst Galaxies
A. A. Suchkov, V. Berman, T. M. Heckman (Space Telescope Science Institute, Baltimore) and D. S. Balsara (N.C.S.A., Univ. of Illinois Urbana-Champaign)
75.15 CO Observations of the Dwarf Starburst Galaxy NGC 5253 and the $\bf I_{\bf CO}/N_{\bf H_2}$ Ratio
J. L. Turner (UCLA) and S. C. Beck (Tel Aviv)
75.16 Star Formation Histories of Luminous Starburst Galaxies
D. A. Smith (NRC/GSFC), T. Herter and M. P. Haynes (Cornell University)

Session 76. Spirals I

Display, Wednesday, 9:20am - 6:30pm, Exhibit Hall A (Tucson Convention Center)

76.01 H\,{\sc ii} Regions and Extinction in the Spiral Galaxy M83
A. L. Hungerford (Western Washington Univ.) and S. D. Ryder (Univ. of Alabama)
76.02 Diffuse Ionized Gas in M51 and M81
B. Greenawalt (NMSU) and R. A. M. Walterbos (NMSU)
76.03 The HI Topology of M33: Samples from NGC595 and NGC604.
T. D. Tongue and D. J. Westpfahl (New Mexico Institute of Mining and Technology)
76.04 HST/WFPC-2 Observations of the Ionizing Star Cluster of the Giant HII region NGC 595 in The Local Group Galaxy M33
E. M. Malumuth (CSC/GSFC), W. Waller and J. W. Parker (HSTX/GSFC)
76.05 Hot stars in External Galaxies Beyond the Magellanic Clouds: Observations of Supergiants in M33 and M31
L. Bianchi, R. Bohlin (STScI), J. Hutchings (DAO) and P. Massey (KPNO)
76.06 Structural Parameters of M31 Globular Clusters from WFPC2 Imaging
C. J. Grillmair, S. M. Faber (Lick Observatory), E. A. Ajhar, T. R. Lauer, C. R. Lynds, E. J. O'Neil (NOAO), W. A. Baum (University of Washington), J. A. Holtzman (Lowell Observatory) and embers of the Wide Field/Planetary Camera Investigation Definition Team Members of the Wide Field/Planetary Camera Investigation Definition Team
76.07 A Double Globular Cluster in M31
S. Holland, G. G. Fahlman and H. B. Richer (UBC)
76.08 {\sl HST} WFPC2 Observations of the M31 Nucleus and the M31 Globular Cluster G1
R. M. Rich (Columbia University), K. J. Mighell (Columbia University) and W. L. Freedman (Carnegie Observatories)
76.09 The Inner Disk of M31 is Full of Cold Molecular Gas
R. J. Allen (STScI), J. Lequeux (Obs. de Paris) and L. Loinard (Obs. de Grenoble)
76.10 The Metallicity Gradient of the M31 Spheroid
D. Reitzel, P. Guhathakurta (UC Santa Cruz) and A. Gould (Ohio State U)
76.11 Study of the Response of GMCs in M31 to the Spiral Shock
D. R. Mizuno (RPI) and M. L. Kutner (RPI)
76.12 HI, HII, HIRAS, and Massive Stars: Tracing the Star Formation in M31
E. A. Magnier, J. van Paradijs (U. Amsterdam, AIAP and CHEAF), D. J. M. Kester and T. R. Bontekoe (SRON Laboratory for Space Research Groningen)
76.13 Star Formation in UGC 491, a Gas-Rich S0 Galaxy
M. P. Scheible (Villanova/NAIC) and J. A. Eder (NAIC)
76.14 Star Formation in Early-Type Virgo Cluster Spiral Galaxies
R. A. Koopmann and J. D. P. Kenney (Yale)
76.15 Can Global Self-regulation of Star Formation Occur in Disk Galaxies? Spatially extended versions of one-zone models
D. W. Chappell and J. M. Scalo (U. Texas at Austin)
76.16 High Resolution HI Study of IC 10
P. Hodge (U. Washington), E. Wilcots (NRAO) and B. Miller (DTM)
76.17 Spatial Correlation of HI Holes and Shells with Star Forming Regions in Nearby Spirals
D. A. Thilker, R. A. M. Walterbos (NMSU) and R. Braun (NFRA)
76.18 The Reddening, Distance, and Star Formation Rate of IC10
P. Massey and T. E. Armandroff (NOAO)
76.19 The Intermediate Stellar Population in R136 Determined from Hubble Space Telescope Images
D. A. Hunter (Lowell Observatory), W. Idt and W. Idt
76.20 HI Kinematics of the Strongly Warped Magellanic--type Spiral NGC 5204
C. Carignan and V. Sicotte (D\'epartement de physique, Universit\'e de Montr\'eal)
76.21 The Formation, Ionization, and Stellar Populations of Three Gas Shells in M33
D. M. Boyd (Valparaiso Univ.), D. A. Hunter (Lowell Observatory) and W. N. Hawley (St. Paul's School)
76.22 Optical Velocity Field in NGC 3310
N. A. Sharp (NOAO)

Session 77. Spirals II

Display, Wednesday, 9:20am - 6:30pm, Exhibit Hall A (Tucson Convention Center)

77.01 Disentangling the Effects of Dust, Age, and Metallicity in Stellar Populations
R. Rouse (Arizona State University)
77.02 An HCN Survey in IR/CO Bright/Luminous Galaxies
Y. Gao and P. M. Solomon (Astronomy Program, State University of New York at Stony Brook)
77.03 Near-Infrared Stellar Kinematics in Luminous Galaxies
N. I. Gaffney, D. F. Lester, R. S. Heyd and G. W. Doppmann (University of Texas at Austin)
77.04 Is Dust Extinction the Cause of Hollow-disk Profiles in Spiral Galaxies?
H. A. Thronson, D. Barnaby, P. E. Johnson and E. J. Spillar (WIRO)
77.05 The Origin of the Far-infrared Emission from Spiral Galaxies
R. A. M. Walterbos (NMSU) and B. Greenawalt (NMSU)
77.06 Far Infrared \char38\ H${\alpha}$ Images of Nearby Spiral Galaxies
N. Devereux (New Mexico State University)
77.07 IRAS Galaxies with the Coldest Far-Infrared Colors
N. Y. Lu, G. Helou and L. Hermans (IPAC/Caltech)
77.08 Galaxies in The Local Universe
A. D. Grauer (UALR and Steward Observatory), M. J. Rieke (Steward Observatory) and K. K. Mcleod (Harvard-Smithsonian Center for Astrophysics)
77.09 VLA Observations of the Peculiar System NGC 5291
B. Malphrus (Morehead State University), C. E. Simpson and S. T. Gottesman (University of Florida)
77.10 Multi-Wavelength Observations of NGC 5775 and NGC 3044
S. Lee and J. Irwin (Queen's University)
77.11 Molecular Emission on Subkiloparsec Scales in the Flocculent Galaxy NGC 5055
M. D. Thornley (UMd)
77.12 Radio Halo Comparisons of the Milky Way and Eight Edge-On Spiral Galaxies
B. C. Heikkila, W. R. Webber and M. R. Templeton (NMSU)
77.13 Broadband Optical and Near-Infrared Imaging of Massive, Gas-Rich Low Surface Brightness Galaxies
P. Knezek and J. Wroten (UMich)
77.14 Measuring the Interstellar Medium of Spiral Galaxies With Supernova Remnant X-Ray Surface Brightnesses
W. W. Miller III (IA-UNAM) and W. Cui (MIT)
77.15 Color Gradients in Spiral Galaxies
S. Courteau (NOAO) and J. Holtzman (Lowell)
77.16 Luminosity Structure and Objective Classification of Galaxies
M. Han (University of Wisconsin - Madison)
77.17 Tracing the Dynamics of the Disk of M99 with Optical/IR Surface Photometry
R. A. Gonz\'alez and J. R. Graham (UC Berkeley)
77.18 Two-dimensional Kinematics of Spiral Galaxies and the Maximum Disk Hypothesis
P. Palunas and T. B. Williams (Rutgers University)
77.19 Displaying N-body Galaxy Simulations: More than Just Pretty Pictures
S. Lester (Louisiana State University) and G. Byrd (University of Alabama, Tuscaloosa)
77.20 Sticky Particle Simulations of Counterrotating Disk Formation
A. R. Thakar and B. S. Ryden (Ohio State U.)

Session 78. Pulsars and Neutron Stars

Display, Wednesday, 9:20am - 6:30pm, Exhibit Hall A (Tucson Convention Center)

78.01 UV-Optical Observations of Pulsars with post-COSTAR HST
G. S. Stringfellow, G. G. Pavlov and F. A. C\'ordova (The Pennsylvania State University)
78.02 Resolving Pulsar Magnetospheres Using Interstellar Scintillation
T. V. Smirnova, V. I. Shishov and V. M. Malofeev (Lebedev Physical Inst.)
78.03 EGRET Gamma-Ray Observations of PSR B1706$-$44
D. J. Thompson, D. L. Bertsch, C. E. Fichtel, R. C. Hartman, S. D. Hunter (NASA/GSFC), B. L. Dingus, J. A. Esposito, R. Mukherjee, J. R. Mattox (USRA/GSFC), G. Kanbach, H. A. Mayer-Hasselwander, M. Merck (MPE), C. von Montigny, P. V. Ramanamurthy (NAS/NRC), J. M. Fierro, Y. C. Lin, P. F. Michelson, P. L. Nolan (Stanford), D. A. Kniffen (Hampden-Sydney) and E. J. Schneid (Grumman)
78.04 Soft X-Ray Emission from Isolated Pulsars: An Archival Study
N. Lloyd (Cornell University) and P. Slane (SAO)
78.05 Towards VLBI Determination of Pulsar Parallaxes, Proper Motions, and Positions.
N. Putnam (Brown University), R. M. Campbell (Harvard University) and I. I. Shapiro (CfA)
78.06 Evidence for Planets around PSR 0329+54
T. V. Shabanova (Pushchino ASC,Russia)
78.07 Gamma Ray Pulsars: Extended Polar Cap Cascades in Nearly Aligned Rotators
J. K. Daugherty (UNCA) and A. K. Harding (NASA/GSFC)
78.08 Broadening and Depolarization of Pulsar Average Profiles
M. M. McKinnon (NRAO)
78.09 Refractive and Diffractive Scintillation of the Pulsar PSR B0329+54
D. R. Stinebring (Oberlin College), M. D. Faison (U. Wisconsin) and M. M. McKinnon (NRAO)
78.10 Interstellar Scattering of Pulsar Pulses at Low Frequencies
Y. P. Shitov (P.N.Lebedev Physical Institute, Russia)
78.11 Neutron Star Fe Atmospheres from OPAL Opacities
M. Rajagopal and R. W. Romani (Stanford University)
78.12 Atmospheres around Neutron Stars
C. L. Fryer and W. Benz (Steward Observatory, University of Arizona, Tucson, AZ 85721)
78.13 A Possible Isolated Neutron Star near the CrA Molecular Cloud
F. M. Walter and S. J. Wolk (SUNY Stony Brook)

Session 79. Supernovae: Observations and Theory

Display, Wednesday, 9:20am - 6:30pm, Exhibit Hall A (Tucson Convention Center)

79.01 The Mechanism of Type II Supernovae: 1-D Results
J. Hayes (University of Arizona) and A. Burrows (University of Arizona)
79.02 Spectrum Synthesis of the Type Ia SNe 1992A and 1981B
P. Nugent, E. Baron, D. Branch (University of Oklahoma) and P. Hauschildt (Arizona State University)
79.03 Two-Dimensional Hydrodynamics Simulations of Convective Si-Burning in Massive Stars
G. Bazan and W. D. Arnett (Steward Observatory)
79.04 Silicon Burning, Quasi-Equilibrium and the formation of the Iron Peak
W. R. Hix (Center for Astrophysics) and F. Thielemann (University of Basel)
79.05 The Berkeley Automatic Imaging Telescopes: The Search for and Photometry of Supernovae
S. D. Van Dyk (UC Berkeley), R. R. Treffers (UC Berkeley), M. W. Richmond (Princeton), A. V. Filippenko (UC Berkeley) and Y. Paik (UC Berkeley)
79.06 SN 1993J in M 81: The UBVRI Light Curves During the First 450 Days
N. M. Silvestri (Union C), T. J. Balonek (Colgate U), L. A. Wells (NOAO/KPNO \char38\ Steward Obs), R. Tweedy (Steward Obs), E. G. Hintz, M. D. Joner, J. W. Moody (BYU), J. L. Koch (St.Lawrence U), T. A. Boroson and A. C. Porter (NOAO/KPNO)
79.07 Analysis of the Late Spectra of SN 1993J and SN 1994I
J. C. Houck and C. Fransson (Stockholm Observatory)
79.08 The Minimum Ejection Velocity of Calcium in Type Ia Supernovae, The Hubble Constant, and the Distance to SN 1981B
A. Fisher and D. Branch (University of Oklahoma)
79.09 Type Ia Supernovae and Early-Type Galaxies
T. Y. Steiman-Cameron (UC Berkeley/NASA-Ames), J. N. Imamura (U. Oregon) and E. M. Schlegel (NASA-GSFC/USRA)
79.10 HST-FOS observations of the inner circumstellar ring of SN 1987A
N. Panagia, S. Scuderi (STScI), R. Gilmozzi (ESO) and R. P. Kirshner (CfA)
79.11 The Wheaton College Supernova Search Program
T. Barker (Wheaton College)
79.12 Adaptive Mesh Radiation-Hydrodynamic Simulations of Core Collapse Supernovae
F. D. Swesty (University of Illinois)
79.13 BVRI Photometry of supernovae 1993G, 1994D, 1994I, 1994M, 1994S, and 1994Q
B. D. Laaksonen (Gettysburg College), W. Romanishin (University of Oklahoma) and L. A. Marschall (Gettysburg College)
79.14 Properties of Star 2, One of the Two SN 1987A Companion, Derived from HST-FOS Observations
S. Scuderi, N. Panagia (STScI), R. Gilmozzi (ESO), R. P. Kirshner and P. M. Challis (CfA)
79.15 The Origin of the Rings Around SN1987A
C. L. Martin and D. Arnett (University of Arizona, Steward Observatory)

Session 80. Stellar Activity II: Early Type Stars, Normal Stars

Display, Wednesday, 9:20am - 6:30pm, Exhibit Hall A (Tucson Convention Center)

80.01 Investigating the Frequecy Evolution of roAp Star HD 60435
P. T. Boyd (USRA GSFC), P. H. Carter (NSWC), R. Gilmore (Drexel U.) and J. F. Dolan (NASA GSFC)
80.02 Long-term spectroscopic monitoring of HD 160529
T. G\"ang, C. Leitherer (STScI), C. Gummersbach, A. Kaufer, H. Mandel, O. Stahl, T. Szeifert, B. Wolf (LSW) and J. Kovacs (GAO)
80.03 Hydrodynamical Simulations of Co-Rotating Interaction Regions and Discrete Absorption Components in Rotating O-Star Winds
S. R. Cranmer and S. P. Owocki (Bartol Research Institute)
80.04 A Comparision of B-Star Spectral Types on the MK and Ultraviolet Classification Systems
J. Rountree (SAIC/U. Arizona) and G. Sonneborn (NASA/GSFC)
80.05 NLTE Line-blanketed Model Atmosphere Analysis of the hot Subdwarf BD +75\deg 325
T. Lanz, I. Hubeny (USRA/GSFC) and S. R. Heap (NASA/GSFC)
80.06 A New B Variable, HD182865
R. Dukes and W. Kubinec ( C. of Charleston)
80.07 Four Years of APT Observations of the Prototypical Star, 53 Persei
L. Mills and R. Dukes (C. of Charleston)
80.08 APT Observations of the 53 Persei Star, 3 Vulpeculae
W. Kubinec, R. Dukes and A. Kubinec (CofCharleston)
80.09 Mass-Loss Rates for $\eta$ Carinae as Affected by Equatorial Wind Compression
R. Ignace, J. P. Cassinelli and J. E. Bjorkman (U. of Wisconsin-Madison)
80.10 The Solution Topology of Line-Driven Stellar Winds
J. E. Bjorkman (U. Wisconsin)
80.11 An Eight-Year Study of the Radio Emission from the WR Binary HD 193793
R. L. White (STScI) and R. H. Becker (IGPP/LLNL and UC-Davis)
80.12 X-Ray-Induced Ionization in the Winds of Early-B Stars: Constraints Imposed by EUVE
J. J. MacFarlane, D. H. Cohen and J. P. Cassinelli (Univ. of Wisconsin)
80.13 On The Light Curves of Magnetic Chemically Peculiar Stars
S. J. Adelman (The Citadel) and R. Fried (Braeside Observatory)
80.14 Optical Identification and Spectroscopy of EUV Sources
N. Craig, A. Fruscione, M. Abbott, C. A. Christian, J. J. Drake, J. Dupuis, M. Mathioudakis (CEA/UCB), R. Green and T. Boroson (KPNO)
80.15 Photometry of Chemically Peculiar Stars with the Four College Automatic Telescope: Evidence for Precession
D. P. Smith (UNLV)
80.16 The Solar-Stellar Spectrograph: The Sun in 1994
G. W. Lockwood, J. C. Hall (Lowell Observatory) and E. L. Gibb (Northern AZ Univ)
80.17 The Solar-Stellar Spectrograph: Unification of Solar and Stellar Flux Scales and Initial Results
J. C. Hall, G. W. Lockwood (Lowell Observatory) and E. L. Gibb (Northern AZ Univ)
80.18 HR Diagrams from the Michigan Spectral Catalogues, Volumes 1-5
N. Houk, C. Branch and S. Winfrey (U. of Mich)
80.19 Comparison of the {\it WBVR} Photoelectric Catalog with the {\it UBVR} System
W. H. Warren Jr. (HSTX/GSFC)

Session 81. YSO's, Masers and Molecules

Display, Wednesday, 9:20am - 6:30pm, Exhibit Hall A (Tucson Convention Center)

81.01 The Spectral Energy Distributions of Low Mass Protostars in Taurus
H. M. Butner (DTM-CIW), G. H. Moriarty-Schieven (DRAO, NRC) and P. G. Wannier (JPL)
81.02 High Resolution Spectroscopy of Br $\gamma$ Emission in YSOs
J. Najita (Center for Astrophysics), J. Carr (The Ohio State University) and A. Tokunaga (Institute for Astronomy)
81.03 The Nature of the Point Sources in the BN-KL Star Forming Region
S. T. Ridgway, I. Gatley, K. M. Merrill, R. G. Probst (NOAO) and F. Low (U. Arizona)
81.04 Emission line survey of Orion from 600-720 GHz
D. J. Benford, P. Schilke, T. R. Hunter, E. Serabyn and T. G. Phillips (Caltech)
81.05 A Catalogue of Massive Young Stellar Objects
S. J. Chan, T. Henning and K. Schreyer (Max Planck Society, Research Group ``Dust in Star-Forming Regions'')
81.06 Global Self-Similar Magnetohydrodynamic Bipolar Outflows
J. D. Fiege and R. N. Henriksen (Queen's University)
81.07 Dynamic Instability of Rapidly Rotating Protostars
B. K. Pickett, R. H. Durisen, M. S. Johnson and G. A. Davis (Indiana University)
81.08 Disk-Driven MHD Winds/Jets
Z. Li, C. Mckee (UC Berkeley) and M. Begelman (JILA)
81.09 Millimeter/Sub-mm Laboratory Studies of Iron-Containing Molecules
M. D. Allen and L. M. Ziurys (ASU)
81.10 Interstellar Alcohols and the Chemistry of Hot Cores
M. E. Kress (RPI, NASA Ames), S. B. Charnley (UC Berkeley, NASA Ames), A. G. G. M. Tielens (NASA Ames) and T. J. Millar (UMIST)
81.11 Interstellar HOC$^{+}$ Revisited
A. J. Apponi and L. M. Ziurys (ASU)
81.12 Do Hydroxyl Masers Really Move?
E. E. Bloemhof (MMTO), M. J. Reid and J. M. Moran (CfA)
81.13 Scattered Halos around H$_2$O Masers
C. R. Gwinn (UCSB)
81.14 Three Short Period Miras $-$ Z Aql, RZ Sco and R Cet: Water Maser Emission and its Implications
I. R. Little-Marenin (Wellesley C), J. A. Mattei (AAVSO) and R. R. Cadmus, Jr. (Grinnell C.)

Session 82. HII Regions

Display, Wednesday, 9:20am - 6:30pm, Exhibit Hall A (Tucson Convention Center)

82.01 Ionization Structure in the 30 Doradus Nebula from WFPC-2 Imagery
P. A. Scowen, J. J. Hester (ASU), J. S. Gallagher (U. Wisconsin), R. Lynds, E. J. O'Neil, Jr. (KPNO), G. E. Ballester, J. T. Clarke (U. Michigan), C. J. Burrows, J. Krist (STScI), S. Casertano, R. E. Griffiths (Johns Hopkins), D. Crisp, R. W. Evans, K. R. Stapelfeldt, J. T. Trauger (JPL), J. G. Hoessel (U. Wisconsin), J. A. Holtzman, A. M. Watson (Lowell), J. R. Mould (MSSSO) and J. A. Westphal (Caltech)
82.02 Emission-Line Imaging of the ``Classic'' H {\sc ii} Region M42 and the Giant Emission Bubble N70
B. R. Patterson (U. Washington), W. H. Waller (HSTX, NASA/GSFC/LASP), L. W. Brown (NASA/GSFC/LASP), A. Caulet (ESO/ST-ECF), R. F. Gelderman (NRC, NASA/GSFC/LASP), R. A. Schommer (NOAO/CTIO) and B. E. Woodgate (NASA/GSFC/LASP)
82.03 SiO Towards Ultracompact H{\sc ii} Regions
J. M. Acord (MPIfR), C. M. Walmsley (U. Cologne) and E. B. Churchwell (U. Wisconsin-Madison)
82.04 Radio Recombination Lines toward the S140/L1204
G. T. Smirnov, R. L. Sorochenko and C. M. Walmsley (P.N.Lebedev Physical Institute, Russia)
82.05 The HII/Molecular Cloud Complex W3
M. J. Claussen (NRAO-AOC), A. R. Tieftrunk (MPIfR), R. A. Gaume (USNO), T. L. Wilson (MPIfR) and K. J. Johnston (USNO)
82.06 The Complex High Mass Star Formation Region S255-2
E. M. Howard, J. L. Pipher and W. J. Forrest (University of Rochester)
82.07 Molecular Line Observations of NGC 281
Y. Lee and J. Jung (Korea Astronomy Observatory)
82.08 The Massive Star Content of the Milky Way: Northern OB Associations
K. Johnson (Carleton College), P. Massey (NOAO) and K. D. Eastwood (NAU)
82.09 Effects of Dust in High-Metallicity HII Regions
J. C. Shields and R. C. Kennicutt (Steward Obs.)
82.10 The Ammonia Distribution on 4000 AU Scales Near S106FIR
J. G. Mangum (SMTO) and A. Wootten (NRAO)
82.11 High Sensitivity VLA Continuum Observations of G29.96$-$0.02
A. Fey, R. Gaume (USNO) and M. Claussen (NRAO)
82.12 Supershell GS235$-$02:Morphology and Kinematics
J. H. Jung, Y. Lee (Korea Astronomy Observatory) and B. Koo (Seoul National University)

Session 83. Circumstellar Gas and Dust

Display, Wednesday, 9:20am - 6:30pm, Exhibit Hall A (Tucson Convention Center)

83.01 Preliminary Results from a VLBA Circumstellar Water Maser Monitoring Project
K. Marvel (NRAO and NMSU) and P. Diamond (NRAO)
83.02 The Distribution of HCN, \H13CN and CN in IRC+10216
A. Dayal and J. H. Bieging (Steward Observatory/University of Arizona)
83.03 Sub-Arcsecond $10 \mu$m Imaging of Circumstellar Dust Around Cool Stars
R. M. Danen (UCSB, CfA), C. R. Gwinn (UCSB) and E. E. Bloemhof (MMTO)
83.04 Far-Infrared Water Line Emission from Circumstellar Outflows
W. Chen (JHU) and D. A. Neufeld (JHU)
83.05 7 $\mu$m Dust Emission Feature in Oxygen-Rich Circumstellar Shells
J. H. Goebel, J. D. Bregman and F. C. Witteborn (NASA Ames Research Center)
83.06 The Stability of Dust-driven winds from AGB stars
N. Mastrodemos and M. Morris (UCLA)
83.07 Circumstellar Gas Around the Peculiar $\lambda$ Bootis Stars
D. A. Bohlender (CFHT)
83.08 Compensated Imaging System Observations of the Circumstellar Envelope of P Cygni
D. Nishimoto, J. Africano (Rockwell Power Systems), C. Morossi, M. Franchini, G. Sedmak (Trieste Astronomical Observatory), R. Ragazzoni (Padova Astronomical Observatory), A. Suzuki (Phillips Laboratory/AMOS), S. Restaino (Phillips Laboratory/KAFB) and J. Albetski
83.09 Multiple Rings and the Evolution of Wolf-Rayet Stars
A. P. Marston (Steward Obs. and Drake University)
83.10 Spectra of Classical Shell Stars in 1994
R. F. Garrison (Astronomy Department, University of Toronto) and T. Koktay (Astronomy Department, University of Toronto)
83.11 HST Astrometric Motions of $\eta$ Carinae from WF2,WF1,PC1
D. M. Dowling, D. G. Currie, E. J. Shaya (U.Md.), J. Hester (U.A.) and E. Groth (Princeton)

Session 84. Star Forming Clouds

Display, Wednesday, 9:20am - 6:30pm, Exhibit Hall A (Tucson Convention Center)

84.01 Magnetic Field Maps of Quiescent Bok Globules
B. D. Kane (Boston Unversity) and D. P. Clemens (Boston University)
84.02 B335: HCO$^+$($1\rightarrow0$) Emission from Molecular Outflow
N. Turner, D. Fischer and D. Reitzel (UCSC / Lick Observatory)
84.03 The Outflow, Dense Core, and ``Jet'' in L810
D. Clemens (Boston U.), J. Yun (U.Lisbon), M. Berkovitch (UCLA), N. Patel (Harvard CfA) and T. Xie (U.Maryland)
84.04 Numerical Study of Ambipolar Diffusion
M. L. Norman and D. S. Balsara (N.C.S.A., University of Illinois Urbana-Champaign)
84.05 Analytical Study of Ambipolar Diffusion
D. S. Balsara and M. L. Norman (N.C.S.A., Univ. of Illinois at Urbana-Champaign)
84.06 A New Method for Determinining the CO to H$_2$ Conversion Factor for Translucent Molecular Clouds
L. Magnani (University of Georgia) and J. S. Onello (State University of New York, Cortland)
84.07 JCMT Polarimetry in the Extreme-Infrared (800 microns) of M17-SW
J. P. Vallee (NRCC HIA-Ottawa) and P. Bastien (U. de Montreal)
84.08 A Study of Deutero-Ammonia in the Pre-Stellar Condensation in L1689N
A. Wootten (NRAO) and J. G. Mangum (SMTO)
84.09 Assignment of Emission at 203 $\mu$m to Collisionally Excited CH
S. J. Petuchowski, C. L. Bennett (NASA/Goddard), S. W. J. Colgan, M. R. Haas and E. F. Erickson (NASA/Ames)
84.10 Linear Perturbations in Filamentary Barotropic Molecular Clouds with Magnetic Fields
C. S. Gehman, F. C. Adams, M. Fatuzzo and R. Watkins (University of Michigan)
84.11 Star Formation in Cold, Magnetized Molecular Clouds: A Semi-Analytic Model
P. N. Safier, C. F. McKee and S. W. Stahler (UC Berkeley)
84.12 Infrared Spectral Imaging of S106
K. M. Merrill and I. Gatley (NOAO)
84.13 An Initial Study of the Carbon Monoxide Ion (CO$^+$) in Photodissociation Regions
W. B. Latter (National Radio Astronomy Observatory) and C. K. Walker (Steward Observatory)
84.14 One-point Statistics of Velocity Fluctuations in Star-Forming Regions
M. S. Miesch (JILA) and J. M. Scalo (U. of Texas)
84.15 Ice Mantles in the Taurus Dark Cloud: A High Resolution Study of Solid CO, A Search for CH$_3$OH, and Indirect Evidence for CO$_2$
J. E. Chiar, D. C. B. Whittet (Rensselaer Polytechnic Institute), A. J. Adamson (University of Central Lancashire) and T. H. Kerr (University of Nottingham)
84.16 Mid-IR Spectral Features of Young Stars in the BD+40 4124 Region
L. K. Deutsch, M. A. Iyengar (FCAD/U.Mass.), J. L. Hora (IfA), W. F. Hoffmann, A. Dayal (U.of A.), H. M. Butner (DTM) and G. G. Fazio (SAO)
84.17 A Rotating Molecular Disk and Ionized Outflow in K3-50A
C. De Pree (NRAO-VLA, UNC Chapel Hill), T. Geballe (JAC), W. M. Goss (NRAO-VLA), D. Mehringer (UIUC) and G. Cecil (UNC-Chapel Hill)
84.18 Modeling Line Profiles of Protostellar Collapse with Rotation
M. Choi and N. J. Evans II (Department of Astronomy, The University of Texas at Austin)

Session 85. Binaries

Display, Wednesday, 9:20am - 6:30pm, Exhibit Hall A (Tucson Convention Center)

85.01 A Photometric Analysis of the Apsidal Motion Binary System PV Cassiopeiae
M. J. Barembaum and P. B. Etzel (San Diego State University)
85.02 A Photometric Analysis of the Binary System UV Leonis
M. C. G. Frederik and P. B. Etzel (San Diego State University)
85.03 O I $\lambda$7774 Absorption as a Tracer of Streams and Disks in Non-Degenerate Binary Stars
P. B. Etzel (SDSU), E. C. Olson (UIUC) and M. C. Senay (IfA/Hawaii)
85.04 Rapid H$\alpha$ Emission Variations in Accretion Disks in Long-Period Algols
E. C. Olson (UIUC) and P. B. Etzel (SDSU)
85.05 A Spectrum Synthesis Program for Binary Stars with Optically Thick Accretion Disks
A. P. Linnell and I. Hubeny (Mich. State and NASA/GSFC, USRA)
85.06 A ROSAT Survey of Near-Contact Binary Systems
J. S. Shaw, J. -P. Caillault (Univ. Georgia) and J. H. M. M. Schmitt (MPE-Garching)
85.07 1E 1919+0427: A New Short Period Eclipsing RS CVn System
D. L. Summers (NOAO/KPNO) and P. A. Heckert (WCU)
85.08 W Corvi, A Contact Binary Star in Poor Thermal Contact?
A. P. Odell (No. Ariz. U.)
85.09 Early Results from the APP- an Eclipsing Binary in Hercules and a Potential Eclipsing Hyad
D. Terrell (UCalgary) and D. H. Kaiser (Crescent Moon Obs)
85.10 Continuous vs. Discrete Emission Components in X-ray Spectrum of AR Lac
K. P. Singh (GSFC,NAS-NRC), N. E. White (GSFC) and S. A. Drake (GSFC,USRA)
85.11 Rapid Line Profile Variations in the Long-Period Interacting Binary VV Cephei
W. H. Bauer, T. G. Grenfell, D. M. Taylor (Wellesley) and R. E. Stencel (U. Denver)
85.12 A Photometric Study of Short Period Eclipsing Binary Star V719 Her
S. N. Goderya, K. C. Leung and E. G. Schmidt (Behlen Observatory, U.N.L., Lincoln, Nebraska)
85.13 Orbit-Resolved H-alpha Emission in Three Selected Algols
T. Hunt and R. K. Honeycutt (Indiana U.)
85.14 Binary Star Light Curve Modeling with Location-Specific Limb-Darkening
W. Van Hamme (Florida International University) and R. E. Wilson (University of Florida)
85.15 The Algol-Type Eclipsing Binary: KO Aql
J. Mader (San Diego State University Astronomy Department, Mount Laguna Observatory) and R. J. Angione (San Diego State University Astronomy Department, Mount Laguna Observatory)
85.16 EUVE Observations of Algol
R. A. Stern, J. R. Lemen (LPARL), J. H. M. M. Schmitt (MPE/Garching) and J. P. Pye (U. of Leicester)
85.17 Photometric and Spectroscopic Observations of the Newly Discovered RS CVn Binary HD 80492
H. L. Nations (College of Charleston), L. A. Marschall (Gettysburg College) and R. P. Stefanik (CfA)
85.18 The Low-Mass Double-Lined Eclipsing Binary CM Draconis
T. S. Metcalfe (University of Arizona), R. D. Mathieu (University of Wisconsin), D. W. Latham and G. Torres (CfA)
85.19 Simultaneous/Contemporaneous EUVE, ASCA, IUE, VLA and AT Observations of the RS CVn binary HR1099 in August 1994
A. Brown (CASA, U. of Colorado), S. Skinner (ISAS), R. Stewart (ATNF), S. Drake (HEASARC, GSFC) and B. Deeney (CASA, U. of Colorado)
85.20 A Re-analysis of the $\zeta$ Aurigae Binary System
P. D. Bennett (JILA, U. of Colorado), G. M. Harper (JILA, U. of Colorado), A. Brown (CASA, U. of Colorado) and C. A. Hummel (USNO)
85.21 The Detection of a Repeating Structure in the Envelope of $\zeta$ Aurigae
G. M. Harper (JILA, University of Colorado), P. D. Bennett (JILA, University of Colorado) and A. Brown (CASA, University of Colorado)
85.22 Eclipsing Binaries in the Magellanic Clouds: Laboratories for Stellar Structure and Evolution
D. H. Bradstreet (Eastern Coll.), L. E. DeWarf, E. F. Guinan, F. P. Maloney and P. A. Maurone (Villanova U.)
85.23 Ultraviolet Spectropolarimetry of the Massive Interacting Binary V356 Sgr
R. S. Polidan (LASP/GSFC), D. E. Lynch (GST and U.Maryland), R. A. Downes (STScI), C. D. Keyes (STScI) and S. N. Shore (IUSB)
85.24 Astrometric Companions Detected at Visible Wavelengths with the Hubble Space Telescope Fine Guidance Sensors
O. G. Franz, L. H. Wasserman (Lowell Obs.), A. J. Bradley (Allied--Signal Aerospace Co.), G. F. Benedict, R. L. Duncombe, P. D. Hemenway, W. H. Jefferys, B. McArthur, E. Nelan, P. J. Shelus, D. Story, A. L. Whipple (UTx.), L. W. Fredrick (UVa) and W. F. van Altena (Yale)

Session 86. Solar Active Regions

Display, Wednesday, 9:20am - 6:30pm, Exhibit Hall A (Tucson Convention Center)

86.01 Three Dimensional Compressible Convection in Oblique Magnetic Fields
N. E. Hurlburt (Lockheed Solar and Astrophysics Lab.), P. C. Matthews (University of Nottingham) and M. R. E. Proctor (Cambridge University)
86.02 Flux Emergence in the Sunspot Moat
A. M. Title, R. A. Shine, Z. A. Frank (LPARL), G. W. Simon (AFSC/PL/GPSS) and P. N. Brandt (Kiepenheuer Institut fuer Sonnenphysik)
86.03 Self-Organized Criticality and Sunspot Groups
J. S. Neff (Department of Physics and Astronomy, University of Iowa)
86.04 Magnetic Structure and Heating of an Active Region: Comparison Between SXT/Yohkoh Observations and Magnetogram
C. -C. Cheng, K. P. Dere (NRL), J. Wang and G. Ai (Beijing Astro. Obs.)
86.05 Simultaneous High Resolution Coronal and Photospheric Observations From NIXT and BBSO
A. Winebarger (King College), E. E. DeLuca and L. Golub (SAO)
86.06 Facular Contrast and Hot Wall Models of Flux Tubes
K. P. Topka (Solar Physics Research Corp), T. D. Tarbell and A. M. Title (Lockheed)
86.07 On the Relation Between Facular Bright Points and the Magnetic Field
T. Berger (Stanford University), R. Shine (LPARL), T. Tarbell (LPARL), A. Title (LPARL) and G. Scharmer (Royal Academy of Sweden)
86.08 Flux Retraction and Recycling
S. D'Silva (NOAO)
86.09 Joint Radio and Soft X-ray Imaging of an ``Anemone'' Active Region
A. Vourlidas (NMIMT/NRAO), T. S. Bastian (NRAO), M. Aschwanden (UMd) and N. Nitta (LPARL)
86.10 Solar Wind Alfven Waves and the Role of Ion Kinetics
B. J. Vasquez (UNH)

Session 87. HST

Oral, Wednesday, 10:00am - 11:30am, Ballroom I (Tucson Convention Center)

87.01 Studies of the Interstellar Medium with the HST
B. D. Savage (Dept. of Astronomy, Univ. of Wisconsin-Madison)
87.02 Hubble Space Telescope Observations of Star Clusters
J. E. Hesser (NRC/HIA/DAO)
87.03 Highlights of Supernova Studies from HST
R. P. Kirshner (Harvard-Smithsonian Center for Astrophysics)

Session 88. Multi-Wavelength Observations of Blazars and BL Lacertae Objects

Oral, Wednesday, 10:00am - 11:30am, Ballroom II (Tucson Convention Center)

88.01D The Broad Band Energy Distributions of a Complete Sample of Radio-selected BL Lacertae Objects
R. M. Sambruna, C. M. Urry (STScI), L. Maraschi (Univ. of Milan) and G. Ghisellini (Univ. of Turin)
88.02 The prediction of Statistical Properties for Radio and X-ray BL Lac Samples.
M. J. M. March\~{a} and I. W. A. Browne (NRAL Jodrell Bank)
88.03 The Non-Detection of Gamma-Ray Emission from X-ray Selected BL Lacs and Radio-Quiet Quasars
J. R. Mattox (University of Maryland and USRA)
88.04 Rapid Multiwavelength Flaring of the BL Lac Object PKS 2155-304
C. M. Urry, J. E. Pesce, R. Sambruna (STScI), A. Treves, E. Pian (SISSA), L. Maraschi (U. Genova and U. Milan), T. Kii, K. Sasaki, F. Makino, R. Fujimoto (ISAS), M. Tashiro (U. Tokyo), H. Marshall (Eureka Corp.), G. Madejski (GSFC/LHEA), S. Penton and J. M. Shull (U. Colorado)
88.05 EGRET Observations of Nearby BL Lacertae Objects
Y. C. Lin, P. F. Michelson, P. L. Nolan, D. L. Bertsch, C. E. Fichtel, R. C. Hartman, S. D. Hunter, D. J. Thompson, B. L. Dingus, J. A. Esposito, R. Mukherjee, P. Sreekumar, C. von Montigny, G. Kanbach, H. A. Mayer-Hasselwander, E. J. Schneid, D. A. Kniffen and J. R. Mattox
88.06 Time Variability in the TeV Gamma Ray Emission from the Blazar Markarian 421
M. S. Schubnell (University of Michigan, for the Whipple Collaboration)
88.07 Optical Variability of the Blazar OJ 287
A. Sadun (Bradley Observatory, Agnes Scott College), A. Sillanpaa, L. O. Takalo (Tuorla Observatory), T. Pursimo (Instituto de Astrofisica de Canarias), H. Lehto, K. Nilsson (Tuorla Observatory), M. Kidger, J. A. de Diego, J. N. Gonzalez-Perez, J. -M. Rodriguez-Espinosa, T. Mahoney (Instituto de Astrofisica de Canarias), P. Boltwood (1655 Main St., Stittsville, Ont., Canada), D. Dulzin-Hacyan, E. Benitez (Instituto de Astronomia, Mexico), G. W. Turner, J. W. Robertson, R. K. Honeycut (Department of Astronomy, Indiana University), Y. S. Efimov, N. Shakhovskoy (Crimean Astrophysical Observatory), P. A. Charles (Department of Astrophysics, University of Oxford), K. J. Schramm, U. Borgeest, J. V. Linde (Hamburg Sternwarte, Hamburg Universitat) and R. Grashuis (Capilla Peak Observatory, University of New Mexico)
88.08 The Radio-loud Fraction of Quasars with Faint Optical Luminosities
E. J. Hooper, C. D. Impey (SO), C. B. Foltz (MMTO) and P. C. Hewett (IoA, Cambridge, UK)

Session 89. Clusters of Galaxies - Galaxy Evolution

Oral, Wednesday, 10:00am - 11:30am, Ballroom III (Tucson Convention Center)

89.01D Baryon Fractions for Poor Clusters
I. P. Dell'Antonio, M. J. Geller and D. G. Fabricant (CfA)
89.02D Ultra-Low Surface Brightness Galaxies and High-z Clusters
J. J. Dalcanton (Observatories of the Carnegie Institute of Washington)
89.03D FIR Emission From Rich Clusters
C. Cox (University of Michigan)
89.04 The Local Metallicity -- Surface Brightness Relationship in Galactic Disks
S. D. Ryder (University of Alabama)
89.05 On the Origin of the SW H$_{\alpha}$ Regions in the Barred Galaxy NGC 3367
T. Garcia-Barreto (Instituto de Astronomia,UNAM,Mexico)
89.06 Gas Filaments in the Collisional Debris of NGC 4438
J. D. P. Kenney (Yale), V. Rubin (DTM), P. Planesas (Yebes) and J. S. Young (UMass)

Session 90. Planetary Nebula and Degenerate Stars

Oral, Wednesday, 10:00am - 11:30am, Mohave (Tucson Convention Center)

90.01D Imaging Spectrophotometry of Planetary Nebulae
N. J. Lame (Ohio State)
90.02D Sub-Arcsecond $\lambda$6 cm Images of PNe and their Expansion Parallax Distances
A. R. Hajian (Cornell University) and Y. Terzian (Cornell University)
90.03 WFPC2 Imaging of NGC6543: Closing in on Bubbles, Shocks, and Precessing Jets
J. P. Harrington (U Md) and K. J. Borkowski (U Md and GSFC)
90.04D Isolated Magnetic White Dwarf Stars: A Search for Low Fields and Offset Dipole Models for High Fields
A. Putney (California Institute of Technology)
90.05 The Chemical Evolution of Very Cool White Dwarfs
P. Bergeron (U.Montr\'eal), M. -T. Ruiz (U.Chile) and S. K. Leggett (JACH)
90.06 Ignition of Deuterium in Low-mass Brown Dwarfs
W. B. Hubbard, J. I. Lunine, D. Saumon (LPL, U of AZ) and A. Burrows (Depts. of Phys. and Astron., U of AZ)

Session 91. Young Stars and Young Clusters

Oral, Wednesday, 10:00am - 11:30am, Maricopa (Tucson Convention Center)

91.01 A Sub-millimeter-wave ``Flare'' from GG Tau?
G. H. Moriarty-Schieven (Dominion Radio Astrophysical Observatory, National Research Council of Canada) and H. M. Butner (Department of Terrestrial Magnetism, Carnegie Institution of Washington)
91.02 Probing Potential Protostars: H$_2$CO in the Serpens Cloud CoreGalactic Feedback and Cluster Evolution
R. L. Hurt, M. Barsony (UC Riverside), A. Wootten (NRAO), C. A. Metzler and A. E. Evrard (U. of Michigan)
91.03 CO Observations of the Highly Collimated Outflow NGC 2264G
C. J. Lada (SAO) and M. Fich (Univ. of Waterloo)
91.04 High Resolution Observations of Compact Outflows Associated with TMC1 and TMC1A
C. J. Chandler (NRAO), S. Terebey (IPAC, JPL and Caltech), M. Barsony (UC Riverside) and T. J. T. Moore (ADFA)
91.05D Stellar Populations of Deeply Embedded Young Clusters: Near--Infrared Spectral Classification
M. R. Meyer (Five College Astronomy Department, University of MAssachusetts)
91.06 Investigations of the Earliest Phases of Stellar Evolution in Young Embedded Clusters
E. A. Lada (Univerisity of Maryland)
91.07D The Low Mass IMF of Young Open Clusters
D. M. Williams, G. H. Rieke, M. J. Rieke (Steward Observatory), J. R. Stauffer (CfA) and F. Comer\'on (Universitat de Barcelona)

Session 92. Solar Active Regions and Solar Wind

Oral, Wednesday, 10:00am - 11:30am, Greenlee (Tucson Convention Center)

92.01 On a Babcock-Leightom dynamo model with a thin, deep seated generating layer for the toroidal field.
B. R. Durney (University of Arizona and Zetetic Institute)
92.02 The Statistical Physics of Active Regions and Flares: Why Do Cellular Automaton Models Work So Well?
E. T. Lu (IfA)
92.03 Fractal Techniques Applied to a Flaring Active Region
M. Adams (NASA/MSFC) and Z. E. Musielak (UAH)
92.04 White-Light Coronal Fine Structure
L. J. November (National Solar Observatory) and S. Koutchmy (Institut d'Astrophysique)
92.05D One Dimensional Merging of Magnetic Fields with Cooling
V. Dorman and R. M. Kulsrud (Princeton University)
92.06 The Role of Alfv\`en Waves in Solar Wind Acceleration
M. Krogulec (UAH and Uni. Gda\'nsk, Poland), Z. E. Musielak (UAH), S. T. Suess, S. F. Nerney and R. L. Moore (NASA/MSFC)
92.07 Supersonic Solutions of the Solar Wind Equations
J. W. Chamberlain (Rice Univ.)
92.08 Solar Active Regions as a Percolation Phenomenon
D. G. Wentzel (University of Maryland) and P. E. Seiden (IBM Research Center)

Session 93. HST

Oral, Wednesday, 2:00pm - 3:30pm, Ballroom I (Tucson Convention Center)

93.01 The HST Key Project on the Extragalactic Distance Scale
W. L. Freedman (Carnegie Observatories)
93.02 Host and Companion Galaxies of Luminous, Nearby Quasars
J. Bahcall (Institute for Advanced Study, Princeton, NJ 08540)
93.03 HST Observations of QSO Absorption Lines
W. L. W. Sargent (Palomar Observatory)

Session 94. Acceleration and Jets in AGN, High Redshift Quasars, Polarization

Oral, Wednesday, 2:00pm - 3:30pm, Ballroom II (Tucson Convention Center)

94.01 Self-Consistent Particle Acceleration and High Energy Emission in AGNs
E. Marietta and F. Melia (University of Arizona)
94.02D Stochastic Particle Acceleration Near Compact Objects: Implications for Gamma-Ray Blazars and Galactic Black Holes
H. Li (Rice University)
94.03 A Different Type of magnetically Driven Jets
J. Contopoulos (NASA/GSFC; NAS/NRC Resident Research Associate)
94.04D Optical Polarization of Warm IR-Ultraluminous AGNs
D. C. Hines (U.Texas)
94.05 Polarisation Variability of OJ287 in 1993/94
J. -M. R. Rodriguez-Espinosa, M. Kidger (Instituto de Astrof\'\i sica de Canarias, La Laguna, 38200 Tenerife, Spain), D. Wills (University of Texas, Austin, TX, USA), J. A. de Diego, J. N. Gonz\'alez-P\'erez (Instituto de Astrof\'\i sica de Canarias, La Laguna, 38200 Tenerife, Spain), A. Sillanp\"a\"a, L. O. Takalo, T. Pursimo, H. Lehto, K. Nilsson (Tuorla Observatory, Tuorla 21500 Piikki\"o, Finland), Y. S. Efimov, N. Shakhovskoy (Crimean Astrophysical Observatory, P/O Naunchny, 334413 Crimea, Ukraine) and P. A. Charles (University of Oxford, dept. of Astrophysics, NuclearAstrophysics Laboratory, Keble Road Oxford, OX1 3RH, England)
94.06D VLBA Polarization Imaging at 22 GHz
K. J. Lepp\"anen (NRAO, Charlottesville, VA), J. A. Zensus (NRAO, Charlottesville, VA) and P. J. Diamond (NRAO, Socorro, NM)

Session 95. Substructures of Galaxy Clusters, Field Galaxies

Oral, Wednesday, 2:00pm - 3:30pm, Ballroom III (Tucson Convention Center)

95.01D Numerical Simulations of Merging Clusters of Galaxies and their Observational Consequences.
K. Roettiger, J. O. Burns and C. Loken (NMSU)
95.02D Performance of the TPM Algorithm on Massively Parallel Supercomputers and its Applications in Cosmology
G. Xu (Princeton Univ)
95.03D An Optical Search for Distant Galaxy Clusters
C. E. Lidman and B. A. Peterson (MSSSO)
95.04D The Properties of Faint Field Galaxies
S. P. Driver (ASU)
95.05 HST Imaging of Faint Field Galaxies: Implications for Galaxy Evolution
K. Glazebrook, R. Ellis, B. Santiago (IoA, Cambridge) and R. Griffiths (JHU)

Session 96. YSOs and Masers

Oral, Wednesday, 2:00pm - 3:30pm, Mohave (Tucson Convention Center)

96.01 Synchrotron Emission from the Water Maser Source in W3OH
M. J. Reid, A. L. Argon, C. R. Masson, K. M. Menten and J. M. Moran (CfA)
96.02 High Resolution VLA Observations of the Orion SiO Maser and Its Exciting Star (IRc 2?)
K. M. Menten (CfA) and M. J. Reid (CfA)
96.03 Laboratory and Astronomical Detection of the $^{25}$MgNC and $^{26}$MgNC Radicals
M. A. Anderson, L. M. Ziurys (ASU), M. Guelin and P. Valiron (IRAM)
96.04 Detection of Interstellar N$_2$O: A New Molecule Containing an N-O Bond
L. M. Ziurys, A. J. Apponi (ASU), J. M. Hollis (NASA) and L. E. Snyder (Univ.of Ill.)
96.05D Regions of Low Mass Star Formation in the Lynds 1641 Giant Molecular Cloud
L. E. Allen, K. M. Strom and S. E. Strom (U. Massachusetts, Amherst)
96.06 [SiII] Imaging of the Orion Nebula
H. Latvakoski, G. J. Stacey, T. L. Hayward, G. E. Gull and L. Peng (Department of Astronomy, Cornell University)
96.07D The structure of molecular clouds: its relation to cloud evolution and star formation
J. P. Williams (University of California at Berkeley)

Session 97. Milky Way

Oral, Wednesday, 2:00pm - 3:30pm, Maricopa (Tucson Convention Center)

97.01D H$_2$ Emission as a Large-Scale Tracer of Molecular Hydrogen in Interstellar Clouds
M. L. Luhman and D. T. Jaffe (Univ. of Texas at Austin)
97.02 Abundance Measurements in the Outer Galaxy
A. L. Rudolph (Harvey Mudd College), J. P. Simpson (SETI), E. F. Erickson, M. R. Haas (NASA/Ames) and M. Fich (Univ. of Waterloo)
97.03 A Turbulent Model for the Interstellar Medium with Magnetic Fields and rotation
E. V\'azquez-Semadeni (IAUNAM), T. Passot and A. Pouquet (Observatoire de Nice)
97.04D What is the age of the Galaxy's inner halo?
L. K. Fullton and B. W. Carney (University of North Carolina)
97.05 A Galactic Center Mass Model with no Black Hole
G. V. Bicknell, P. Saha and P. J. McGregor (Mount Stromlo and Siding Spring Observatories)
97.06D Spectral Calibration and Kinematic Properties of the Field Horizontal Branch Stars
R. Wilhelm, T. C. Beers (MSU), J. Sommer-Larsen, C. Flynn (Niels Bohr Inst), J. R. Pier (Naval Obs), G. W. Preston, S. A. Shectman (OCIW), R. O. Gray (Appal. State) and A. C. Layden (CTIO)

Session 98. Activity and Abundances Near the Main Sequence

Oral, Wednesday, 2:00pm - 3:30pm, Greenlee (Tucson Convention Center)

98.01D The Evolution of Rotation and Activity in Young Open Clusters: The Zero--Age Main Sequence
B. M. Patten (Univ. of Hawaii, IfA)
98.02 Magnetic Ap Stars in Clusters: Clues about Star Formation Regions
A. Young and S. Stroup (SDSU/Astronomy Dept.)
98.03 Convection and Thermal Bifurcation in the A-Type Stars
T. Simon (U. Hawaii) and W. B. Landsman (Hughes STX)
98.04D Lithium in Evolved Stars
D. D. Hiltgen and C. Sneden (University of Texas at Austin)
98.05 An Upper Limit for the Deuterium Abundance in the Halo Star HD 140283
D. A. Lubowich (Hofstra U. and AIP), J. M. Pasachoff, R. P. Galloway (Williams College), R. L. Kurucz (Cfa) and V. V. Smith (U. Texas)
98.06 Lithium in Halo Dwarfs: The Undoing of Diffusion by Mass Loss
F. J. Swenson (LANL)
98.07 Coronal Loop Model Atmospheres for Low Mass Stars
M. Giampapa (NOAO), R. Rosner (U. Chicago), V. Kashyap (U. Chicago), T. Fleming (U. Arizona), J. Schmitt (MPE) and J. Bookbinder (SAO)

Session 99. Star Formation

Invited, Wednesday, 3:40pm - 5:10, Ballroom I (Tucson Convention Center)

99.01 The Frequency and Effect of Young Companion Stars
A. Ghez (UCLA)
99.02 Accretion Disks, Energetic Outflows, and the Origin of Stellar Angular Momentum
S. Edwards (Five College Astronomy, Smith College)
99.03 The Early Stages of Protostellar Evolution
C. K. Walker (Steward Observatory, University of Arizona)