A warm Spitzer survey of the LSST/DES 'Deep drilling' fields

Mark Lacy, Duncan Farrah, Niel Brandt, Masao Sako, Gordon Richards, Ray Norris, Susan Ridgway, Jose Afonso, Robert Brunner, Dave Clements, Asantha Cooray, Giovanni Covone, Chris D'Andrea, Mark Dickinson, Harry Ferguson, Joshua Frieman, Ravi Gupta, Evanthia Hatziminaoglou, Matt Jarvis, Amy KimballLori Lubin, Minnie Mao, Lucia Marchetti, Jean-Christophe Mauduit, Simona Mei, Jeffrey Newman, Robert Nichol, Seb Oliver, Ismael Perez-Fournon, Marguerite Pierre, Huub Rottgering, Nick Seymour, Ian Smail, Jason Surace, Paul Thorman, Mattia Vaccari, Aprajita Verma, Gillian Wilson, Michael Wood-Vasey, Rachel Cane, Risa Wechsler, Paul Martini, August Evrard, Richard McMahon, Kirk Borne, Diego Capozzi, Jiashang Huang, Claudia Lagos, Chris Lidman, Claudia Maraston, Janine Pforr, Anna Sajina, Rachel Somerville, Michael Strauss, Kristen Jones, Wayne Barkhouse, Michael Cooper, David Ballantyne, Preshanth Jagannathan, Eric Murphy, Isabella Pradoni, Nicholas Suntzeff, Ricardo Covarrubias, Lee Spitler

Research output: Other contribution

Abstract

We propose a warm Spitzer survey to microJy depth of the four predefined Deep Drilling Fields (DDFs) for the Large Synoptic Survey Telescope (LSST) (three of which are also deep drilling fields for the Dark Energy Survey (DES)). Imaging these fields with warm Spitzer is a key component of the overall success of these projects, that address the 'Physics of the Universe' theme of the Astro2010 decadal survey. With deep, accurate, near-infrared photometry from Spitzer in the DDFs, we will generate photometric redshift distributions to apply to the surveys as a whole. The DDFs are also the areas where the supernova searches of DES and LSST are concentrated, and deep Spitzer data is essential to obtain photometric redshifts, stellar masses and constraints on ages and metallicities for the >10000 supernova host galaxies these surveys will find. This 'DEEPDRILL' survey will also address the 'Cosmic Dawn' goal of Astro2010 through being deep enough to find all the >10^11 solar mass galaxies within the survey area out to z~6. DEEPDRILL will complete the final 24.4 square degrees of imaging in the DDFs, which, when added to the 14 square degrees already imaged to this depth, will map a volume of 1-Gpc^3 at z>2. It will find ~100 > 10^11 solar mass galaxies at z~5 and ~40 protoclusters at z>2, providing targets for JWST that can be found in no other way. The Spitzer data, in conjunction with the multiwavelength surveys in these fields, ranging from X-ray through far-infrared and cm-radio, will comprise a unique legacy dataset for studies of galaxy evolution.
Original languageEnglish
Publication statusPublished - 1 Dec 2014

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