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Verfasst von:Tempel, Elmo [VerfasserIn]   i
 Tuvikene, T. [VerfasserIn]   i
 Muru, M. M. [VerfasserIn]   i
 Stoica, R. S. [VerfasserIn]   i
 Bensby, T. [VerfasserIn]   i
 Chiappini, C. [VerfasserIn]   i
 Christlieb, Norbert [VerfasserIn]   i
 Cioni, M.-R. L. [VerfasserIn]   i
 Comparat, J. [VerfasserIn]   i
 Feltzing, S. [VerfasserIn]   i
 Hook, I. [VerfasserIn]   i
 Koch-Hansen, Andreas [VerfasserIn]   i
 Kordopatis, G. [VerfasserIn]   i
 Krumpe, M. [VerfasserIn]   i
 Loveday, J. [VerfasserIn]   i
 Minchev, I. [VerfasserIn]   i
 Norberg, P. [VerfasserIn]   i
 Roukema, B. F. [VerfasserIn]   i
 Sorce, J. G. [VerfasserIn]   i
 Storm, J. [VerfasserIn]   i
 Swann, E. [VerfasserIn]   i
 Taylor, E. N. [VerfasserIn]   i
 Traven, G. [VerfasserIn]   i
 Walcher, C. J. [VerfasserIn]   i
 Jong, Roelof S. de [VerfasserIn]   i
Titel:An optimized tiling pattern for multiobject spectroscopic surveys
Titelzusatz:application to the 4MOST survey
Verf.angabe:E. Tempel, T. Tuvikene, M.M. Muru, R.S. Stoica, T. Bensby, C. Chiappini, N. Christlieb, M.-R. L. Cioni, J. Comparat, S. Feltzing, I. Hook, A. Koch, G. Kordopatis, M. Krumpe, J. Loveday, I. Minchev, P. Norberg, B.F. Roukema, J.G. Sorce, J. Storm, E. Swann, E.N. Taylor, G. Traven, C.J. Walcher and R.S. de Jong
E-Jahr:2020
Jahr:05 August 2020
Umfang:18 S.
Fussnoten:Gesehen am 21.01.2020
Titel Quelle:Enthalten in: Royal Astronomical SocietyMonthly notices of the Royal Astronomical Society
Ort Quelle:Oxford : Oxford Univ. Press, 1827
Jahr Quelle:2020
Band/Heft Quelle:497(2020), 4, Seite 4626-4643
ISSN Quelle:1365-2966
Abstract: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.
DOI:doi:10.1093/mnras/staa2285
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext: https://doi.org/10.1093/mnras/staa2285
 DOI: https://doi.org/10.1093/mnras/staa2285
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1745151761
Verknüpfungen:→ Zeitschrift

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