AAS 205th Meeting, 9-13 January 2005
Session 137 GLIMPSE: First Results
Poster, Thursday, January 13, 2005, 9:20am-4:00pm, Exhibit Hall

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[137.03] A GLIMPSE of Possible Mid-Infrared Bowshock Using the Spitzer Space Telescope

R. Benjamin (U of Wisconsin-Whitewater), GLIMPSE Team

We present images of several bowshock-shaped structures discovered as part of GLIMPSE, a Spitzer Legacy project using IRAC to map the inner Galactic plane. Analysis is presented of the first two objects discovered in the vicinity of RCW49. These objects are coincident with IRAS point sources: IRAS 10205-5729 and IRAS 10227-5730. MSX observations indicated that these sources were extended; the high angular resolution afforded by Spitzer Space Telescope show that the emission arises from bowshock shaped structure. 2MASS, Spitzer, MSX and IRAS observations are used to obtain the spectral energy distribution of these objects. We discuss how the morphology of these structures can be used constrain the density and velocity of both the stellar wind and the ambient interstellar medium. The discovery of several bowshock candidates using IRAC/Spitzer, and the recent Gemini discovery of a similar structure in the H and K bands towards the Galactic center source IRS 8, suggest that there may be many more detections of infrared stellar bowshocks yet to come.

If you would like more information about this abstract, please follow the link to http://www.astro.wisc.edu/glimpse. 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: benjamir@uww.edu

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