AAS 205th Meeting, 9-13 January 2005
Session 140 Cold Gas and Molecular Clouds
Poster, Thursday, January 13, 2005, 9:20am-4:00pm, Exhibit Hall

Previous   |   Session 140   |   Next

[140.06] Imaging Cold Dust in the Galactic Plane

H. E. Matthews (NRC of Canada), B. Weferling (Joint Astronomy Centre Hawaii), A. Evans (Keele University, UK), M. Cohen (UC Berkeley), J. Jackson, R. Shah (Boston University), R. Simon (U. Köln), T. Jenness, G.R. Davis, D. Pierce-Price (JAC Hawaii), W.R.F. Dent (UK ATC), D. Johnstone (HIA/NRC Canada), J.S. Richer (MRAO, UK), G.A. Fuller (UMIST, UK), J. Rathborne (Boston U.)

Images of continuum emission at wavelengths of 850 and 1200\mum from a section of the Galactic Plane near longitude 44\circ are presented. These data were obtained with the JCMT and SEST bolometer array receivers with beamwidths of about 14 and 22 arcsec respectively, and cover a total area of 2 square degrees. They constitute the first extensive observations of emission primarily from cold dust in a representative part of the Galaxy outside the Galactic Center. We employed complementary techniques at the two telescopes - chop/scan using SCUBA at the JCMT, and Fastscanning (direct detection) with SIMBA at the SEST - which together allow us to assess the reality of emission features where necessary.

Since interstellar dust is optically thin at mm/sub-mm wavelengths these observations provide a census of dense cold dust clumps throughout the Galaxy in this direction. Twenty-seven such objects are detected in the present survey, most of which can be identified with regions of star formation. In this paper we use complementary 13CO data from the BU-FCRAO Galactic Ring Survey to determine the kinematic distances of these sources, and compare these data with images obtained in the infrared by the MSX mission.

These observations presage the potential of large-scale surveys with forthcoming instrumentation, such as SCUBA2 and HARP/ACSIS at the JCMT.

If you would like more information about this abstract, please follow the link to http://www.astro.keele.uk/~ae/. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: henry.matthews@nrc.gc.ca

Previous   |   Session 140   |   Next

Bulletin of the American Astronomical Society, 36 5
© 2004. The American Astronomical Society.