AEGIS: A panchromatic study of IRAC-selected extremely red objects with confirmed spectroscopic redshifts

  • G. Wilson
  • , J. S. Huang
  • , G. G. Fazio
  • , R. Yan
  • , A. M. Koekemoer
  • , S. Salim
  • , S. M. Faber
  • , J. Lotz
  • , C. N.A. Willmer
  • , M. Davis
  • , A. L. Coil
  • , J. A. Newman
  • , C. J. Conselice
  • , C. Papovich
  • , M. L.N. Ashby
  • , P. Barmby
  • , S. P. Willner
  • , R. Ivison
  • , S. Miyazaki
  • , D. Rigopoulou

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

We study 87 extremely red objects (EROs), selected both to have color redder than R - [3.6] = 4.0 and to have confirmed spectroscopic redshifts. Together, these two constraints result in this sample populating a fairly narrow redshift range at 0.76 < z < 1.42. The key new ingredient included here is deep Spitzer Space Telescope Infrared Array Camera (IRAC) data. Based on [3.6] - [8.0] color, we demonstrate that it is possible to classify EROs as early-type galaxies, dusty starburst galaxies, or active galactic nuclei (AGNs; power-law types). We present ultraviolet-to-mid-infrared spectral energy distributions (SEDs) and Advanced Camera for Surveys (ACS) images, both of which support our simple IRAC color classification.

Original languageEnglish (US)
Pages (from-to)L59-L63
JournalAstrophysical Journal
Volume660
Issue number1 II
DOIs
StatePublished - May 1 2007

Keywords

  • Galaxies: elliptical and lenticular, cD
  • Galaxies: evolution
  • Galaxies: high-redshift
  • Galaxies: starburst
  • Infrared: galaxies

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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