NOAO >   Observing Info >   Approved Programs >   2013A-0468

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Proposal Information for 2013A-0468


PI: Peter Eisenhardt, JPL, Peter.Eisenhardt@jpl.nasa.gov
Address: MS 169-327, 4800 Oak Grove Drive, Pasadena, CA 91109, USA

CoI: Chao-Wei Tsai, JPL
CoI: Jingwen Wu, JPL
CoI: Roger Griffith, IPAC
CoI: Lin Yan, IPAC
CoI: Daniel Stern, JPL
CoI: Adam Stanford, UC Davis
CoI: Andrew Blain, University of Leicester
CoI: Dominic Benford, GSFC
CoI: Carrie Bridge, Caltech
CoI: Roberto Assef, JPL
CoI: Sara Petty, Virginia Tech

Title: Hot DOGs: The Most Luminous Galaxies Found by WISE

Abstract: NASA's Wide-field Infrared Survey Explorer (WISE) has achieved its fundamental goal by delivering its all-sky survey at 3.4, 4.6, 12 and 22 (micron) (W1, W2, W3, and W4), reaching sensitivities hundreds of times deeper than IRAS. One of the two primary science objectives for WISE is to identify the most luminous galaxies in the Universe (Ultra-Luminous IR Galaxies, or ULIRGs). We have used WISE photometry to select an all- sky sample of objects which are extremely luminous, and for which Herschel far-IR follow-up observations are underway. The objects are prominent in W3 and W4, but faint or undetected in W1 and W2. Available spectroscopy and far IR photometry for these objects show they typically have redshifts z > 2 and luminosities over 10^13 L_\odot, with about 10% exceeding 10^14 L_\odot and rivaling the brightest known QSOs. Their dust is more than twice as hot as other IR luminous objects: they are hot dust obscured galaxies or ``hot DOGs," and may represent a new phase in galaxy evolution. We request NOAO time to obtain redshifts and optical and near IR photometry for the all-sky sample of the brightest hot DOGs, all of which are in our Herschel program. With existing and allocated observations, this request should complete the acquisition of these crucial data for this primary WISE science objective.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2013A-0468

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