EFOSC2 Spectroscopy of SWIRE-CDFS Galaxies
E. Kalfountzou, M. Trichas, M. Rowan-Robinson, D. Clements, T., Babbedge, J. Seiradakis
TL;DR
This paper presents optical spectra of 34 SWIRE-CDFS galaxies, validating photometric redshift methods and analyzing the nature of infrared luminous galaxies, including ULIRGs and HLIRGs with AGN and starburst activity.
Contribution
It provides spectroscopic data for SWIRE-CDFS sources and assesses the accuracy of photometric redshift techniques for these galaxies.
Findings
12 infrared luminous galaxies identified
5 ULIRGs and 1 HLIRG with combined AGN and starburst activity
Spectroscopic redshifts used to validate photometric methods
Abstract
We present the optical spectra of a sample of 34 SWIRE-CDFS sources observed with EFOSC2 on the ESO 3.6m Telescope. We have used the spectra and spectroscopic redshifts to validate our photometric redshift codes and SED template fitting methods. 12 of our sources are Infrared Luminous Galaxies. Of these, five belong to the class of ULIRGs and one to the class of HLIRGs with evidence of both an AGN and starburst component contributing to their extreme infrared luminosity for 3, starburst contributing for 1 and AGN contributing for 2 of them.
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