THE SPITZER-HETDEX EXPLORATORY LARGE-AREA SURVEY
Por:
Papovich, C., Shipley, H.V., Mehrtens, N., Lanham, C., Lacy, M., Ciardullo, R., Finkelstein, S.L., Bassett, R., Behroozi, P., Blanc, G.A., De Jong, R.S., Depoy, D.L., Drory, N., Gawiser, E., Gebhardt, K., Gronwall, C., Hill, G.J., Hopp, U., Jogee, S., Kawinwanichakij, L., Marshall, J.L., McLinden, E., Mentuch Cooper, E., Somerville, R.S., Steinmetz, M., Tran, K.-V., Tuttle, S., Viero, M., Wechsler, R., Zeimann, G.
Publicada:
1 ene 2016
Resumen:
We present post-cryogenic Spitzer imaging at 3.6 and 4.5 ?m with the Infrared Array Camera (IRAC) of the Spitzer/HETDEX Exploratory Large-Area (SHELA) survey. SHELA covers ?24 deg2 of the Sloan Digital Sky Survey "Stripe 82" region, and falls within the footprints of the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) and the Dark Energy Survey. The HETDEX blind R ? 800 spectroscopy will produce ?200,000 redshifts from the Ly?; emission for galaxies in the range 1.9 < z < 3.5, and an additional ?200,000 redshifts from the [O ii] emission for galaxies at z < 0.5. When combined with deep ugriz images from the Dark Energy Camera, K-band images from NEWFIRM, and other ancillary data, the IRAC photometry from Spitzer will enable a broad range of scientific studies of the relationship between structure formation, galaxy stellar mass, halo mass, the presence of active galactic nuclei, and environment over a co-moving volume of ?0.5 Gpc3 at 1.9 < z < 3.5. Here, we discuss the properties of the SHELA IRAC data set, including the data acquisition, reduction, validation, and source catalogs. Our tests show that the images and catalogs are 80% (50%) complete to limiting magnitudes of 22.0 (22.6) AB mag in the detection image, which is constructed from the weighted sum of the IRAC 3.6 and 4.5 ?m images. The catalogs reach limiting sensitivities of 1.1 ?Jy at both 3.6 and 4.5 ?m (1?, for R = 2? circular apertures). As a demonstration of the science, we present IRAC number counts, examples of highly temporally variable sources, and galaxy surface density profiles of rich galaxy clusters. In the spirit of the Spitzer Exploratory programs, we provide all of the images and catalogs as part of the publication. © 2016. The American Astronomical Society. All rights reserved.
Filiaciones:
Papovich, C.:
Department of Physics and Astronomy, Texas A and M University, College Station, TX, United States
George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, College Station, TX, United States
Shipley, H.V.:
Department of Physics and Astronomy, Texas A and M University, College Station, TX, United States
George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, College Station, TX, United States
Department of Physics and Astronomy, Tufts University, 574 Boston Avenue, Medford, MA, United States
Mehrtens, N.:
Department of Physics and Astronomy, Texas A and M University, College Station, TX, United States
George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, College Station, TX, United States
Lanham, C.:
Department of Physics and Astronomy, Texas A and M University, College Station, TX, United States
Lacy, M.:
North American ALMA Science Center, NRAO Headquarters, Charlottesville, VA, United States
Ciardullo, R.:
Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA, United States
Institute for Gravitation and the Cosmos, Pennsylvania State University, University Park, PA, United States
Finkelstein, S.L.:
Department of Astronomy, University of Texas at Austin, Austin, TX, United States
Bassett, R.:
International Centre for Radio Astronomy Research, University of Western Australia, 7 Fairway, Crawley, WA, Australia
Behroozi, P.:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD, United States
Blanc, G.A.:
Departamento de Astronomía, Universidad de Chile, Camino Del Observatorio 1515, Las Condes, Santiago, Chile
Centro de Astrofisica y Tecnologias Afines (CATA), Camino del Observatorio 1515, Las Condes, Santiago, Chile
Visiting Astronomer Observatories, Carnegie Institution for Science, 813 Santa Barbara St, Pasadena, CA, United States
De Jong, R.S.:
Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, Potsdam, Germany
Depoy, D.L.:
Department of Physics and Astronomy, Texas A and M University, College Station, TX, United States
George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, College Station, TX, United States
Drory, N.:
Department of Astronomy, University of Texas at Austin, Austin, TX, United States
Gawiser, E.:
Department of Physics and Astronomy Rutgers, State University of New Jersey, 136 Frelinghuysen Road, Piscataway, NJ, United States
Gebhardt, K.:
Department of Astronomy, University of Texas at Austin, Austin, TX, United States
Gronwall, C.:
Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA, United States
Institute for Gravitation and the Cosmos, Pennsylvania State University, University Park, PA, United States
Hill, G.J.:
Department of Astronomy, University of Texas at Austin, Austin, TX, United States
Hopp, U.:
Max-Planck-Institut für Extraterrestrische Physik, Garching, Germany
Univeristatssternwarte München, LMU Munich, Scheiner Strasse 1, Munich, Germany
Jogee, S.:
Department of Astronomy, University of Texas at Austin, Austin, TX, United States
Kawinwanichakij, L.:
Department of Physics and Astronomy, Texas A and M University, College Station, TX, United States
George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, College Station, TX, United States
Marshall, J.L.:
Department of Physics and Astronomy, Texas A and M University, College Station, TX, United States
George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, College Station, TX, United States
McLinden, E.:
Department of Astronomy, University of Texas at Austin, Austin, TX, United States
Mentuch Cooper, E.:
Department of Astronomy, University of Texas at Austin, Austin, TX, United States
Somerville, R.S.:
Department of Physics and Astronomy Rutgers, State University of New Jersey, 136 Frelinghuysen Road, Piscataway, NJ, United States
Steinmetz, M.:
Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, Potsdam, Germany
Tran, K.-V.:
Department of Physics and Astronomy, Texas A and M University, College Station, TX, United States
George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, College Station, TX, United States
Tuttle, S.:
Department of Astronomy, University of Texas at Austin, Austin, TX, United States
Viero, M.:
Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 382 Via Pueblo Mall, Stanford, CA, United States
Wechsler, R.:
Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 382 Via Pueblo Mall, Stanford, CA, United States
Zeimann, G.:
Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA, United States
Institute for Gravitation and the Cosmos, Pennsylvania State University, University Park, PA, United States
Department of Astronomy, University of Texas at Austin, Austin, TX, United States
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