Journal Article

EFOSC2 spectroscopy of SWIRE-CDFS galaxies

E. Kalfountzou, M. Trichas, M. Rowan-Robinson, D. Clements, T. Babbedge and J. H. Seiradakis

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 413, issue 1, pages 249-261
Published in print May 2011 | ISSN: 0035-8711
Published online April 2011 | e-ISSN: 1365-2966 | DOI:
EFOSC2 spectroscopy of SWIRE-CDFS galaxies

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We present the optical spectra of a sample of 34 Spitzer Wide-Area Infrared Extragalactic Survey (SWIRE)-Chandra Deep Field South (CDFS) sources observed with the European Southern Observatory (ESO) Faint Object Spectrograph and Camera (EFOSC2) on the ESO 3.6-m telescope. We have used the spectra and spectroscopic redshifts to validate our photometric redshift codes and spectral energy distribution (SED) template fitting methods. 12 of our sources are infrared luminous galaxies. Of these, five belong to the class of ultraluminous infrared galaxies (ULIRGs) and one to the class of hyperluminous infrared galaxies (HLIRGs), with evidence of both an active galactic nucleus and a starburst component contributing to their extreme infrared luminosity for three, a starburst contributing for one and AGN contributing for two of them.

Keywords: techniques: spectroscopic; catalogues; surveys; quasars: emission lines; galaxies: Seyfert; infrared: galaxies

Journal Article.  4100 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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