The brightest Extremely Red Objects in the Sky from 2MASS/SDSS fields

Details The brightest Extremely Red Objects in the Sky from 2MASS/SDSS fields The brightest Extremely Red Objects in the Sky from 2MASS/SDSS fields

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sptz.prop30607g&link_type=abstract

Spitzer Proposal ID #30607

Computer Science

Scientific paper

We propose mid- to far-IR photometry to explore the nature of the brightest (K<14.5) dusty Extremely Red Objects (EROs; R-K>5) on the sky, identified over an unprecedented area of 5300deg2, by cross-correlating SDSS and 2MASS. These systems are over 100 times brighter at any wavelength compared to typical EROs in deep pencil-beam surveys, and they likely represent the most nearby/bright tail of this population. These systems, largely overlooked in the optical, are also likely to be the most massive galaxies in the process of formation we know todate and therefore are interesting in their own right. The proposed mid- and far-IR observations will allow us to explore the nature of this population by deconvolving the different emission components to: (i) assess the relative contribution of AGN/starburst activity to the bolometric luminosity, (ii) quantify the dust properties and estimate stellar masses, (iii) explore similarities with high-z dusty galaxies (e.g. sub-mm sources) and (iv) build a high quality dusty template SED library over a wide wavelength baseline (UV to far-IR) which will provide an invaluable template set for the interpretation of fainter dusty EROs found in deep pencil-beam surveys.

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