AAS 200th meeting, Albuquerque, NM, June 2002
Session 74. Stellar Atmospheres and Circumstellar Material
Display, Thursday, June 6, 2002, 9:20am-4:00pm, SW Exhibit Hall

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[74.07] NICMOS Observations of Vega: Upper Limits to the Detection of the Debris System

M.D. Silverstone, G. Schneider (Steward Observatory, University of Arizona), B.A. Smith (University of Hawaii)

We report upper limits to the 1-2 micron flux densities from the debris disk around Vega. The circumstellar region including the location of the peak emission in sub-millimeter images (Holland et al. 1998, Nature, 392, 788) was observed with NICMOS as part of the NICMOS IDT GTO/7233 program (P.I. Smith, B.A.). We searched for circumstellar sources in the near infrared images at the locations indicated by recent detections from millimeter interferometry (Koerner, D.W. et al. 2001, ApJL, 560, 181 and Wilner, D.J. et al., 2002, ApJL, in press). No unresolved or extended sources were detected in either direct or coronagraphic imaging modes.

This work is based on observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc. under NASA contract NAS5-26555 and supported by NASA grants NAG5-10843 and NAG5-3042 to the NICMOS IDT.

If you would like more information about this abstract, please follow the link to http://proto.as.arizona.edu/~murray/vega/. 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: murray@as.arizona.edu

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Bulletin of the American Astronomical Society, 34
© 2002. The American Astronomical Soceity.