[52.22] Investigating the mid-far IR properties of LBGs with the SWIRE Legacy Survey

AAS 201st Meeting, January, 2003
Session 52. Galaxy Evolution and Surveys: Observations and Interpretation
Poster, Tuesday, January 7, 2003, 9:20am-6:30pm, Exhibit Hall AB

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[52.22] Investigating the mid-far IR properties of LBGs with the SWIRE Legacy Survey

B. D. Siana, H. E. Smith (UC San Diego/CASS), C. J. Lonsdale (Infrared Processing and Analysis Center), SWIRE Team

A topic of significant current interest is the star formation rate (SFR) in the z=3 Lyman Break Galaxy (LBG) population and their relation to high redshift luminous infrared/submm galaxies and the Cosmic Infrared Background (CIB). Until the launch of SIRTF, star formation in LBGs was inferred from their rest-frame UV and optical data alone. Unfortunately, unknown extinction and star formation histories greatly hinder any SFR determination. With 5\sigma sensitivities at 70\mum, 160\mum, and 20cm, of 2.75 mJy, 17.5 mJy, and 15\muJy respectively, the SIRTF Wide-area InfraRed Extragalactic Survey (SWIRE) may detect the brightest end of the LBG luminosity function. The detection of the radio emission and reprocessed UV in the mid-far IR will allow a more direct determination of LBG SFRs, extinction laws, and their contribution to the CIB. The candidates for SWIRE detection and extinction analysis techniques will be reviewed. This work is supported by NASA-SIRTF Legacy Program funding to UCSD.

The author(s) of this abstract have provided an email address for comments about the abstract: bds@physics.ucsd.edu

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