[63.30] Characterization of ~100 IR Excesses objects from GLIMPSE

AAS 207th Meeting, 8-12 January 2006
Session 63 From Here to Eternity: The Spitzer Legacy Programs
Poster, Tuesday, 9:20am-6:30pm, January 10, 2006, Exhibit Hall

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[63.30] Characterization of ~100 IR Excesses objects from GLIMPSE

B. Uzpen (University of Wyoming), D. R. Semler (Macalester College), H. A. Kobulnicky, M. Pierce (University of Wyoming), GLIMPSE Team

We provide an optical spectroscopic study of ~100 objects with 8-micron infrared excesses selected from the Galactic Legacy Infrared MidPlane Survey Extraordinaire (GLIMPSE) from the Spitzer Space Telescope. Spectroscopic data of these objects were taken with the Wyoming Infrared Observatory (WIRO) 2.3 m telescope using a multi-fiber spectrograph in the 5750 Å - 7150 Å region. Equivalent width measurements of H\alpha and upper limits on the Li I 6708 Å line are used to discriminate between protostars and main sequence objects. The 8-micron excess objects show a diversity of spectral signatures with about three quarters having H\alpha in emission. The data are part of a larger program to characterize the nature of IR excess sources in the GLIMPSE survey.

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