Discovery of an extremely red galaxy at z=0.65 with dusty star-formation and nuclear activity

Abstract

In the course of the follow-up multiwavelength study of a deep radio survey we have discovered that the milli-Jansky radio source PDFJ011423 is a low-redshift (z = 0.65) extremely red galaxy (ERG) with K=15.3, R-K = 5.8 and J-K = 3.1. Optical, infrared and radio photometry, together with optical and near-infrared spectroscopy, reveal a heavily obscured galaxy (A_V=5-6, from the observed Balmer decrement) undergoing vigorous star formation and presenting an active galactic nucleus (AGN). PDFJ011423 is a representative member of the dusty ERG population, providing a local counterpart for studying more distant ERGs.

arXiv comment13 pages (including 2 encapsulated postscript figures), aastex, accepted for publication in ApJL

References in corpus (16)

• XMM-Newton observation of the Lockman Hole; I. The X-ray Data
• LBDS 53W091: An Old red Galaxy at z=1.552
• Massive Star Formation in Galaxies: Radiative transfer models of the UV to mm emission of starburst galaxies
• The Discovery of ERO Counterparts to Faint Submm Galaxies
• Observations of a z=1.44 Dusty, Ultraluminous Galaxy and Implications for Deep Sub-mm Surveys
• Star Formation Rates in Faint Radio Galaxies
• Vigorous star formation hidden by dust in a galaxy at $z=1.4$
• New diagnostic methods for emission-line galaxies in deep surveys
• The Surface Density of Extremely Red Objects
• The Phoenix survey: optical and near-infrared observations of faint radio sources
• VLA Observations of Ultraluminous IRAS Galaxies: Active Nuclei or Starbursts?
• Near Infrared Observations of the Extremely Red Object CL0939+4713B: An Old Galaxy at z~1.58?
• Starburst or Seyfert? Using near-infrared spectroscopy to measure the activity in composite galaxies
• Microjansky sources at 1.4 GHz
• Near-infrared Spectroscopy and HST Imaging of a Dusty Starburst ERO
• The first ISO ERO: a dusty quasar at z = 1.5

Cited by in corpus (24)

• The K20 survey. I. Disentangling old and dusty star-forming galaxies in the ERO population
• The Phoenix Deep Survey: The 1.4 GHz microJansky catalogue
• A deep VLA survey at 6 cm in the Lockman Hole
• Low-Redshift Damped Lyman Alpha Galaxies Toward the Quasars B2 0827+243, PKS 0952+179, PKS 1127-145, and PKS 1629+120
• Radio Continuum Surveys with Square Kilometre Array Pathfinders
• A VLT spectroscopic survey of RX J0152.7-1357, a forming cluster of galaxies at z=0.837
• Enhanced activity of massive black holes by stellar capture assisted by a self-gravitating accretion disc
• The HELLAS2XMM survey. V. Near-Infrared observations of X-ray sources with extreme X/O ratios
• HST/WFPC2 Morphologies of K-selected Extremely Red Galaxies
• The Chandra Deep Field North Survey. X. X-ray Emission from Very Red Objects
• The manifold spectra and morphologies of EROs
• A new infrared color criterion for the selection of 0<z<7 AGN: application to deep fields and implications for JWST surveys
• The Phoenix Deep Survey: spectroscopic catalog
• Obscured Activity: AGN, Quasars, Starbursts and ULIGs observed by the Infrared Space Observatory
• A Hubble Space Telescope Lensing Survey of X-ray Luminous Galaxy Clusters: III. A Multiply-imaged Extremely Red Galaxy at z=1.6
• The Phoenix Deep Survey: the clustering and the environment of Extremely Red Objects
• Present-day scaling relations of submm galaxies: origin of spheroidal sytems
• Radio Observations of the Hubble Deep Field South region: I. Survey Description and Initial Results
• The Phoenix Deep Survey: The star-formation rates and the stellar masses of EROs
• A multi-wavelength approach to the properties of Extremely Red Galaxy populations: I - Contribution to the Star Formation Rate density and AGN content
• On the colour-colour properties of the Extremely Red Objects
• The nature of X-ray selected EROs
• The morphologies and masses of extremely red galaxies in the Groth Strip survey
• The VVDS-VLA Deep Field: III. GMRT observations at 610 MHz and the radio spectral index properties of the sub-mJy population