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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Galaxy And Mass Assembly (GAMA): Spectroscopic analysis
Monthly Notices of the Royal Astronomical Society, Volume 430, No. 3, Year 2013
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Description
The Galaxy And Mass Assembly (GAMA) survey is a multiwavelength photometric and spectroscopic survey, using the AAOmega spectrograph on the Anglo-Australian Telescope to obtain spectra for up to ~300 000 galaxies over 280 deg2, to a limiting magnitude of rpet < 19.8 mag. The target galaxies are distributed over 0 < z ≲ 0.5 with a median redshift of z ≈ 0.2, although the redshift distribution includes a small number of systems, primarily quasars, at higher redshifts, up to and beyond z = 1. The redshift accuracy ranges from σv ≈ 50 km s-1 to σv ≈ 100 km s-1 depending on the signal-to-noise ratio of the spectrum. Here we describe the GAMA spectroscopic reduction and analysis pipeline. We present the steps involved in taking the raw two-dimensional spectroscopic images through to flux-calibrated one-dimensional spectra. The resulting GAMA spectra cover an observed wavelength range of 3750 λ 8850Å at a resolution of R ≈ 1300. The final flux calibration is typically accurate to 10-20 per cent, although the reliability is worse at the extreme wavelength ends, and poorer in the blue than the red. We present details of the measurement of emission and absorption features in the GAMA spectra. These measurements are characterized through a variety of quality control analyses detailing the robustness and reliability of the measurements. We illustrate the quality of the measurements with a brief exploration of elementary emission line properties of the galaxies in the GAMA sample. We demonstrate the luminosity dependence of the Balmer decrement, consistent with previously published results, and explore further how Balmer decrement varies with galaxy mass and redshift. We also investigate the mass and redshift dependencies of the [NII]/Hα versus [OIII]/Hβ spectral diagnostic diagram, commonly used to discriminate between star forming and nuclear activity in galaxies. © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.
Authors & Co-Authors
Hopkins, Andrew M.
Australia
Australian Astronomical Observatory
Driver, Simon P.
Australia, Perth
The University of Western Australia
United Kingdom, St Andrews
University of st Andrews
Brough, Sarah
Australia
Australian Astronomical Observatory
Owers, Matt S.
Australia
Australian Astronomical Observatory
Bauer, Amanda E.
Australia
Australian Astronomical Observatory
Gunawardhana, Madusha L.P.
Australia
Australian Astronomical Observatory
Australia, Sydney
The University of Sydney
Cluver, Michelle E.
Australia
Australian Astronomical Observatory
Colless, Matthew
Australia
Australian Astronomical Observatory
Foster, Caroline
Chile, Santiago
European Southern Observatory Santiago
Lara-López, Maritza A.
Australia
Australian Astronomical Observatory
Roseboom, Isaac G.
United Kingdom, Edinburgh
University of Edinburgh, Institute for Astronomy
Sharp, Rob G.
Australia, Canberra
The Australian National University
Steele, Oliver I.
United Kingdom, Portsmouth
University of Portsmouth
Thomas, Daniel B.
United Kingdom, Portsmouth
University of Portsmouth
Baldry, Ivan K.
United Kingdom, Liverpool
Liverpool John Moores University
Brown, Michael J.I.
Australia, Clayton
Monash University
Liske, Jochen
Germany, Garching Bei Munchen
European Southern Observatory
Norberg, Peder R.
United Kingdom, Durham
Durham University
Robotham, Aaron S.G.
Australia, Perth
The University of Western Australia
United Kingdom, St Andrews
University of st Andrews
Bamford, Steven P.
United Kingdom, Nottingham
University of Nottingham
Bland-Hawthorn, Joss
Australia, Sydney
The University of Sydney
Drinkwater, Michael J.
Australia, Brisbane
The University of Queensland
Loveday, Jon N.
United Kingdom, Brighton
University of Sussex
Meyer, Martin J.
Australia, Perth
The University of Western Australia
Peacock, John A.
United Kingdom, Edinburgh
University of Edinburgh, Institute for Astronomy
Tuffs, Richard J.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Agius, Nicola K.
United Kingdom, Preston
University of Central Lancashire
Alpaslan, Mehmet
Australia, Perth
The University of Western Australia
United Kingdom, St Andrews
University of st Andrews
Andrae, Ellen
Australia, Perth
The University of Western Australia
United Kingdom, St Andrews
University of st Andrews
Cameron, Ewan
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Cole, Shaun M.
United Kingdom, Durham
Durham University
Ching, John H.Y.
Australia, Sydney
The University of Sydney
Christodoulou, Leonidas
United Kingdom, Brighton
University of Sussex
Conselice, Christopher J.
United Kingdom, Nottingham
University of Nottingham
Croom, Scott M.
Australia, Sydney
The University of Sydney
Cross, Nicholas J.G.
United Kingdom, Edinburgh
University of Edinburgh, Institute for Astronomy
de Propris, Roberto
Chile, La Serena
Cerro Tololo Inter American Observatory
Delhaize, Jacinta
Australia, Perth
The University of Western Australia
Dunne, Loretta
Australia, Perth
The University of Western Australia
Eales, Stephen A.
United Kingdom, Cardiff
Cardiff University
Ellis, Simon C.
Australia
Australian Astronomical Observatory
Frenk, Carlos S.
United Kingdom, Durham
Durham University
Graham, Alister W.
Australia, Hawthorn
Swinburne University of Technology
Grootes, Meiert W.
Germany, Heidelberg
Max-planck-institut Für Kernphysik
Häussler, Boris
United Kingdom, Nottingham
University of Nottingham
Heymans, Catherine E.
United Kingdom, Edinburgh
University of Edinburgh, Institute for Astronomy
Hill, David T.
United Kingdom, St Andrews
University of st Andrews
Hoyle, Ben
Spain, Barcelona
Facultat de Física
Hudson, Michael J.
Canada, Waterloo
University of Waterloo
Jarvis, Matthew J.
United Kingdom, Oxford
University of Oxford
Johansson, Jonas
Germany, Garching Bei Munchen
Max Planck Institute for Astrophysics
Jones, Daniel Heath
Australia, Clayton
Monash University
van Kampen, Eelco V.
Germany, Garching Bei Munchen
European Southern Observatory
Kelvin, Lee S.
Australia, Perth
The University of Western Australia
United Kingdom, St Andrews
University of st Andrews
Kuijken, Konrad H.
Netherlands, Leiden
Sterrewacht Leiden
López-Sánchez, Ángel R.
Australia
Australian Astronomical Observatory
Australia, Sydney
Macquarie University
Maddox, Steve J.
New Zealand, Christchurch
University of Canterbury
Madore, Barry F.
United States, Pasadena
Carnegie Institution for Science
Maraston, Claudia
United Kingdom, Portsmouth
University of Portsmouth
McNaught-Roberts, T.
United Kingdom, Durham
Durham University
Nichol, Robert C.
United Kingdom, Portsmouth
University of Portsmouth
Oliver, Seb J.
United Kingdom, Brighton
University of Sussex
Parkinson, Hannah R.
United Kingdom, Edinburgh
University of Edinburgh, Institute for Astronomy
Penny, Samantha J.
Australia, Clayton
Monash University
Phillipps, Steven
United Kingdom, Bristol
University of Bristol
Pimbblet, Kevin A.
Australia, Clayton
Monash University
Ponman, Trevor J.
United Kingdom, Birmingham
University of Birmingham
Popescu, Cristina C.
United Kingdom, Preston
University of Central Lancashire
Prescott, Matthew
South Africa, Bellville
University of the Western Cape
Proctor, Robert N.
Brazil, Sao Paulo
Universidade de São Paulo
Sadler, Elaine M.
Australia, Sydney
The University of Sydney
Sansom, Anne E.
United Kingdom, Preston
University of Central Lancashire
Seibert, Mark
United States, Pasadena
Carnegie Institution for Science
Staveley-Smith, L.
Australia, Perth
The University of Western Australia
Sutherland, William J.
United Kingdom, London
Queen Mary University of London
Taylor, Edward N.
Australia, Sydney
The University of Sydney
van Waerbeke, Ludovic
Canada, Vancouver
The University of British Columbia
Vazquez-Mata, J. A.
United Kingdom, Brighton
University of Sussex
Warren, Stephen J.
United Kingdom, London
Imperial College London
Wijesinghe, Dinuka B.
Australia, Sydney
The University of Sydney
Wild, Vivienne
United Kingdom, St Andrews
University of st Andrews
Wilkins, Steve M.
United Kingdom, Oxford
University of Oxford
Statistics
Citations: 139
Authors: 82
Affiliations: 35
Identifiers
Doi:
10.1093/mnras/stt030
ISSN:
00358711
e-ISSN:
13652966
Research Areas
Cancer
Environmental
Study Design
Cross Sectional Study
Study Approach
Quantitative