Obscured Star Formation in Distant Red Galaxies -- 850μm Detection

Details Obscured Star Formation in Distant Red Galaxies -- 850μm Detection Obscured Star Formation in Distant Red Galaxies -- 850μm Detection

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..379..306k&link_type=abstract

Cosmic Frontiers ASP Conference Series, Vol. 379, proceedings of the conference held 31 July-4 August 2006 at Durham University,

Physics

Scientific paper

We present a study of the submillimeter emission of distant red galaxies (DRGs). The DRGs are selected by the criterion J-K>2.3 red rest-frame optical colours, and are generally massive galaxies at redshifts >2. Using a deep SCUBA submm image of a field centered on the cluster MS 1054-03, we obtain a statistical detection of the DRGs at z = 2 - 3.5, with an average 850μm flux density of 1.11±0.28 mJy. The detection implies an average star formation rate (SFR) of 127±34 M_&sun; yr^{-1} (lensing corrected), assuming that the far-infrared (FIR) spectral energy distribution (SED) is well described by a modified blackbody. The SFR derived from the submm agrees well with SFRs derived from SED fitting of optical/near-IR data and average X-ray emission. The DRGs at 24) at 1

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