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Galaxy And Mass Assembly (GAMA) : Panchromatic Data Release (far-UV-far-IR) and the low-z energy budget.

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

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
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1093/mnras/stv2505
Publisher statement:This article has been accepted for publication in Monthly notices of the Royal Astronomical Society ©: 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Record Created:17 Mar 2016 15:05
Last Modified:17 Feb 2017 09:26

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