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Proposal Information for 2014B-0112


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, UCLA
CoI: Roberto Assef, JPL
CoI: Daniel Stern, JPL
CoI: Edward Wright, UCLA

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 an 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. We have used WISE photometry to select an all-sky sample of objects which are extremely luminous, as confirmed with Herschel far-IR follow-up observations. The objects are prominent in W3 and W4, but faint or undetected in W1 and W2. The 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. Because our 2013B WIYN allocation had poor weather, we request 2014B NOAO time to complete the collection of optical and near IR photometry for northern portion of this all-sky sample of the brightest hot DOGs. 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



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