AAS 203rd Meeting, January 2004
Session 103 GALEX II: Higher Energy Observations
Oral, Wednesday, January 7, 2004, 2:00-3:30pm, Centennial III

[Previous] | [Session 103] | [Next]

[103.06] The IRX-\beta Reddening Relation Using Early GALEX Data

M. Seibert (CalTech), T. Heckman (JHU), S. Charlot (MPA), GALEX Science Team

It is known that starburst galaxies exhibit a correlation between their UV spectral slope (\beta; equivalent to UV color) and their infrared excess (ratio of Far-IR to Far-UV; IRX). This relationship indicates that dust surrounds starburst regions and can be modeled to provide an estimate of the UV extinction as a simple function of the UV color. The lack of a large, uniform, high quality sample of galaxies with both UV and FIR measurements has severely limited the attempts to determine if a similar UV-reddening law exists for normal star forming galaxies. The GALEX mission is conducting the first ever All-sky survey in the Near-UV (2200Å) and Far-UV (1550Å). We have obtained IRAS measurements for a sample of GALEX early mission data and present the preliminary results of a IRX-\beta relation. Although GALEX has only completed a small fraction of the planned survey, this sample is the largest ever assembled to investigate the IRX-\beta correlation.

If you would like more information about this abstract, please follow the link to http://www.galex.caltech.edu. 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.

[Previous] | [Session 103] | [Next]

Bulletin of the American Astronomical Society, 35#5
© 2003. The American Astronomical Soceity.