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Galaxy and Mass Assembly (GAMA): Optimal Tiling of Dense Surveys with a Multi-Object Spectrograph

Published online by Cambridge University Press:  02 January 2013

A. Robotham*
Affiliation:
(Scottish Universities Physics Alliance, SUPA), School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, KY16 9SS, UK
S. P. Driver
Affiliation:
(Scottish Universities Physics Alliance, SUPA), School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, KY16 9SS, UK
P. Norberg
Affiliation:
SUPA, The University of Edinburgh, James Clerk Maxwell Building, The King's Buildings, Mayfield Road, Edinburgh, EH9 3JZ, UK
I. K. Baldry
Affiliation:
Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead, CH41 1LD, UK
S. P. Bamford
Affiliation:
The School of Physics & Astronomy, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
A. M. Hopkins
Affiliation:
Anglo–Australian Observatory, PO Box 296, Epping, NSW 1710
J. Liske
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Strasse 2 D-85748, Garching bei München, Germany
J. Loveday
Affiliation:
Astronomy Centre, Department of Physics & Astronomy, School of Maths and Physical Sciences, Pevensey II Building, University of Sussex, Falmer, Brighton, BN1 9QH, UK
J. A. Peacock
Affiliation:
SUPA, The University of Edinburgh, James Clerk Maxwell Building, The King's Buildings, Mayfield Road, Edinburgh, EH9 3JZ, UK
E. Cameron
Affiliation:
ETH Zurich, Institute for Astronomy, HIT J12.3, CH-8093 Zurich, Switzerland
S. M. Croom
Affiliation:
Sydney Institute for Astronomy, School of Physics A28, University of Sydney, NSW 2006
I. F. Doyle
Affiliation:
Institute of Cosmology and Gravitation, Dennis Sciama Building, Burnaby Road, Portsmouth, PO1 3FX, UK
C. S. Frenk
Affiliation:
Extragalactic & Cosmology Group, Department of Physics, Durham University, South Road, Durham, DH1 3LE, UK
D. T. Hill
Affiliation:
(Scottish Universities Physics Alliance, SUPA), School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, KY16 9SS, UK
D. H. Jones
Affiliation:
Anglo–Australian Observatory, PO Box 296, Epping, NSW 1710
E. van Kampen
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Strasse 2 D-85748, Garching bei München, Germany
L. S. Kelvin
Affiliation:
(Scottish Universities Physics Alliance, SUPA), School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, KY16 9SS, UK
K. Kuijken
Affiliation:
Leiden University, P.O. Box 9500, 2300 RA Leiden, The Netherlands
R. C. Nichol
Affiliation:
Institute of Cosmology and Gravitation, Dennis Sciama Building, Burnaby Road, Portsmouth, PO1 3FX, UK
H. R. Parkinson
Affiliation:
SUPA, The University of Edinburgh, James Clerk Maxwell Building, The King's Buildings, Mayfield Road, Edinburgh, EH9 3JZ, UK
C. C. Popescu
Affiliation:
Jeremiah Horrocks Institute, University of Central Lancashire, Preston, PR1 2HE, UK
M. Prescott
Affiliation:
Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead, CH41 1LD, UK
R. G. Sharp
Affiliation:
Anglo–Australian Observatory, PO Box 296, Epping, NSW 1710
W. J. Sutherland
Affiliation:
Queen Mary, University of London, Mile End Road, London, E1 4NS, UK
D. Thomas
Affiliation:
Institute of Cosmology and Gravitation, Dennis Sciama Building, Burnaby Road, Portsmouth, PO1 3FX, UK
R. J. Tuffs
Affiliation:
Max-Planck Institute for Nuclear Physics (MPIK), Saupfercheckweg 1, 69117 Heidelberg, Germany
*
PCorresponding author. Email: asgr@st-and.ac.uk
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Abstract

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A heuristic greedy algorithm is developed for efficiently tiling spatially dense redshift surveys. In its first application to the Galaxy and MassAssembly (GAMA) redshift survey we find it rapidly improves the spatial uniformity of our data, and naturally corrects for any spatial bias introduced by the 2dF multi-object spectrograph. We make conservative predictions for the final state of the GAMA redshift survey after our final allocation of time, and can be confident that even if worse than typical weather affects our observations, all of our main survey requirements will be met.

Type
Research Article
Copyright
Copyright © Astronomical Society of Australia 2010

References

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