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An optimized tiling...
An optimized tiling pattern for multiobject spectroscopic surveys : Application to the 4MOST survey
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- Tempel, E. (author)
- University of Tartu
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- Tuvikene, T. (author)
- University of Tartu
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- Muru, M. M. (author)
- University of Tartu
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- Stoica, R. S. (author)
- University of Lorraine
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- Bensby, T. (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Chiappini, C. (author)
- Leibniz Institute for Astrophysics Potsdam (AIP)
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- Christlieb, N. (author)
- Heidelberg University
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- Cioni, M. R.L. (author)
- Leibniz Institute for Astrophysics Potsdam (AIP)
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- Comparat, J. (author)
- Max Planck Institute for Extraterrestrial Physics
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- Feltzing, S. (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Hook, I. (author)
- Lancaster University
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- Koch, A. (author)
- Heidelberg University
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- Kordopatis, G. (author)
- University of Côte d'Azur,Côte d'Azur Observatory
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- Krumpe, M. (author)
- Leibniz Institute for Astrophysics Potsdam (AIP)
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- Loveday, J. (author)
- University of Sussex
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- Minchev, I. (author)
- Leibniz Institute for Astrophysics Potsdam (AIP)
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- Norberg, P. (author)
- Durham University
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- Roukema, B. F. (author)
- Claude Bernard University Lyon 1,Nicolaus Copernicus University
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- Sorce, J. G. (author)
- Claude Bernard University Lyon 1,Leibniz Institute for Astrophysics Potsdam (AIP)
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- Storm, J. (author)
- Leibniz Institute for Astrophysics Potsdam (AIP)
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- Swann, E. (author)
- University of Portsmouth
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- Taylor, E. N. (author)
- Swinburne University of Technology
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- Traven, G. (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Walcher, C. J. (author)
- Leibniz Institute for Astrophysics Potsdam (AIP)
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- De Jong, R. S. (author)
- Leibniz Institute for Astrophysics Potsdam (AIP)
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(creator_code:org_t)
- 2020-08-05
- 2020
- English 18 s.
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In: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 497:4, s. 4626-4643
- Related links:
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http://dx.doi.org/10...
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http://dro.dur.ac.uk...
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https://doi.org/10.1...
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Abstract
Subject headings
Close
- Large multiobject spectroscopic surveys require automated algorithms to optimize their observing strategy. One of the most ambitious upcoming spectroscopic surveys is the 4MOST survey. The 4MOST survey facility is a fibre-fed spectroscopic instrument on the VISTA telescope with a large enough field of view to survey a large fraction of the southern sky within a few years. Several Galactic and extragalactic surveys will be carried out simultaneously, so the combined target density will strongly vary. In this paper, we describe a new tiling algorithm that can naturally deal with the large target density variations on the sky and which automatically handles the different exposure times of targets. The tiling pattern is modelled as a marked point process, which is characterized by a probability density that integrates the requirements imposed by the 4MOST survey. The optimal tilling pattern with respect to the defined model is estimated by the tiles configuration that maximizes the proposed probability density. In order to achieve this maximization a simulated annealing algorithm is implemented. The algorithm automatically finds an optimal tiling pattern and assigns a tentative sky brightness condition and exposure time for each tile, while minimizing the total execution time that is needed to observe the list of targets in the combined input catalogue of all surveys. Hence, the algorithm maximizes the long-term observing efficiency and provides an optimal tiling solution for the survey. While designed for the 4MOST survey, the algorithm is flexible and can with simple modifications be applied to any other multiobject spectroscopic survey.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- methods: miscellaneous
- surveys
- techniques: miscellaneous
Publication and Content Type
- art (subject category)
- ref (subject category)
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To the university's database
- By the author/editor
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Tempel, E.
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Tuvikene, T.
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Muru, M. M.
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Stoica, R. S.
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Bensby, T.
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Chiappini, C.
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show more...
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Christlieb, N.
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Cioni, M. R.L.
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Comparat, J.
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Feltzing, S.
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Hook, I.
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Koch, A.
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Kordopatis, G.
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Krumpe, M.
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Loveday, J.
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Minchev, I.
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Norberg, P.
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Roukema, B. F.
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Sorce, J. G.
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Storm, J.
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Swann, E.
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Taylor, E. N.
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Traven, G.
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Walcher, C. J.
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De Jong, R. S.
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- NATURAL SCIENCES
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NATURAL SCIENCES
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Lund University