Galaxy And Mass Assembly (GAMA): panchromatic data release (far-UV–far-IR) and the low-zenergy budget

Driver, Simon P, Wright, Angus H, Andrews, Stephen K, Davies, Luke J, Kafle, Prajwal R, Lange, Rebecca, Moffett, Amanda J, Mannering, Elizabeth, Robotham, Aaron S G, Vinsen, Kevin, Alpaslan, Mehmet, Andrae, Ellen, Baldry, Ivan K, Bauer, Amanda E, Bamford, Steven P, Bland-Hawthorn, Joss, Bourne, Nathan, Brough, Sarah, Brown, Michael J I, Cluver, Michelle E, Croom, Scott, Colless, Matthew, Conselice, Christopher J, da Cunha, Elisabete, De Propris, Roberto, Drinkwater, Michael, Dunne, Loretta, Eales, Steve, Edge, Alastair, Frenk, Carlos, Graham, Alister W, Grootes, Meiert, Holwerda, Benne W, Hopkins, Andrew M, Ibar, Edo, van Kampen, Eelco, Kelvin, Lee S, Jarrett, Tom, Jones, D Heath, Lara-Lopez, Maritza A, Liske, Jochen, Lopez-Sanchez, Angel R, Loveday, Jon, Maddox, Steve J, Madore, Barry, Mahajan, Smriti, Meyer, Martin, Norberg, Peder, Penny, Samantha J, Phillipps, Steven, Popescu, Cristina, Tuffs, Richard J, Peacock, John A, Pimbblet, Kevin A, Prescott, Matthew, Rowlands, Kate, Sansom, Anne E, Seibert, Mark, Smith, Matthew W L, Sutherland, Will J, Taylor, Edward N, Valiante, Elisabetta, Vazquez-Mata, J Antonio, Wang, Lingyu, Wilkins, Stephen M and Williams, Richard (2016) Galaxy And Mass Assembly (GAMA): panchromatic data release (far-UV–far-IR) and the low-zenergy budget. Monthly Notices of the Royal Astronomical Society, 455 (4). pp. 3911-3942. ISSN 0035-8711

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Abstract

We present the Galaxy And Mass Assembly (GAMA) Panchromatic Data Release (PDR) constituting over 230 deg2 of imaging with photometry in 21 bands extending from the far-UV to the far-IR. These data complement our spectroscopic campaign of over 300k galaxies, and are compiled from observations with a variety of facilities including: GALaxy Evolution eXplorer, Sloan Digital Sky Survey, Visible and Infrared Telescope for Astronomy (VISTA), Wide-field Infrared Survey Explorer, and Herschel, with the GAMA regions currently being surveyed by VLT Survey Telescope (VST) and scheduled for observations by Australian Square Kilometer Array Pathfinder (ASKAP). These data are processed to a common astrometric solution, from which photometry is derived for ∼221 373 galaxies with r < 19.8 mag. Online tools are provided to access and download data cutouts, or the full mosaics of the GAMA regions in each band. We focus, in particular, on the reduction and analysis of the VISTA VIsta Kilo-degree INfrared Galaxy data, and compare to earlier data sets (i.e. 2MASS and UKIDSS) before combining the data and examining its integrity. Having derived the 21-band photometric catalogue, we proceed to fit the data using the energy balance code magphys. These measurements are then used to obtain the first fully empirical measurement of the 0.1–500 μm energy output of the Universe. Exploring the cosmic spectral energy distribution across three time-intervals (0.3–1.1, 1.1–1.8, and 1.8–2.4 Gyr), we find that the Universe is currently generating (1.5 ± 0.3) × 1035 h70 W Mpc−3, down from (2.5 ± 0.2) × 1035 h70 W Mpc−3 2.3 Gyr ago. More importantly, we identify significant and smooth evolution in the integrated photon escape fraction at all wavelengths, with the UV escape fraction increasing from 27(18) per cent at z = 0.18 in NUV(FUV) to 34(23) per cent at z = 0.06. The GAMA PDR can be found at: http://gama-psi.icrar.org/.

Item Type: Article
Keywords: Astronomical data bases:miscellaneous, Galaxies: evolution, Galaxies: general, Galaxies: photometry, Cosmology: observations
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QB Astronomy
Depositing User: Richard Chambers
Date Deposited: 16 May 2016 15:18
Last Modified: 07 Mar 2017 02:34
URI: http://sro.sussex.ac.uk/id/eprint/61036

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Project NameSussex Project NumberFunderFunder Ref
Astronomy rolling grantG0278STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCILST/I000976/1