Multiwavelength analyses of faint infrared galaxies
Abstract
This Thesis follows a chronological outline, covering the development of infrared space facilities in the last decades: IRAS, ISO and Spitzer galaxies are studied.
Optical, near- and mid-IR spectroscopy, optical spectropolarimetry and broad-band UV to sub-mm analysis of nearby Ultra Luminous Infrared Galaxies are used as ``local laboratory'' for studying distant IR, active, dusty galaxies. Optical and near-IR spectroscopy of 15 microns ISO sources is analysed; a comparison of the broad-band spectral energy distributions of such objects to those of intermediate-redshift early-type galaxies and distant Lyman-break sources follows. Early Spitzer/SWIRE data are used here to study the optical to near-IR restframe SEDs of galaxies up to redshift ~3, exploiting both near- and mid-IR observations by IRAC and MIPS. The evolution of actively star-forming sources is analyzed through modeling of differential mid-IR source counts. A subsample of field galaxies from the GOODS survey is finally compared to the members of the RDCS 1252.9-2927 cluster, lying at a redshift z=1.237.- Publication:
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Ph.D. Thesis
- Pub Date:
- March 2005
- Bibcode:
- 2005PhDT.........2B
- Keywords:
-
- galaxy;
- Spitzer;
- infrared;
- counts;
- spectroscopy;
- ISO;
- ULIRG;
- SED;
- IRAS;
- RDCS