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A transit survey to search for planets around hot subdwarfs: I. methods and performance tests on light curves from Kepler, K2, TESS, and CHEOPS

Van Grootel, V. and Pozuelos, F.J. and Thuillier, A and Charpinet, S and Delrez, L. and Beck, M. and Fortier, Andrea and Hoyer, S. and Sousa, S. G. and Barlow, B. N. and Billot, N. and Dévora-Pajares, M. and Østensen, R.H. and Alibert, Y. and Alonso, R. and Anglada Escudé, G and Asquier, J. and Barrado, D. and Barros, S. C. C. and Baumjohann, W. and Beck, T. and Bekkelien, A. and Benz, W. and Bonfils, X. and Brandeker, A. and Broeg, Chris and Bruno, G. and Bàrczy, T. and Cabrera Perez, J. and Cameron, A. and Charnoz, S. and Davies, M. B. and Deleuil, M. and Demangeon, O. D. S. and Demory, B. O. and Ehrenreich, David and Erikson, A. and Fossati, L. and Fridlund, M. and Futyan, D. and Gandolfi, D. and Gillon, M. and Guedel, M and Heng, K. and Isaak, K. G. and Kiss, L. and Laskar, J. and Lecavelier des Etangs, A. and Lendl, M. and Lovis, C. and Magrin, D. and Maxted, P. F. L. and Mecina, M and Mustill, A.J. and Nascimbeni, V. and Olofsson, G. and Ottensamer, R. and Pagano, I. and Palle, E. and Peter, G. and Piotto, G. and Plesseria, J.-Y. and Pollacco, D. and Queloz, D. and Ragazzoni, R. and Rando, N. and Rauer, H and Ribas, I. and Santos, N. C. and Scandariato, G. and Segransan, D. and Silvotti, R and Simon, A. E. and Smith, Alexis M S and Steller, Manfred and Szabó, Gy. M. and Thomas, N. and Udry, S. and Viotto, V. and Walton, NA and Westerdorff, Karsten and Wilson, T. G. (2021) A transit survey to search for planets around hot subdwarfs: I. methods and performance tests on light curves from Kepler, K2, TESS, and CHEOPS. Astronomy & Astrophysics. EDP Sciences. ISSN 0004-6361. (In Press)

Full text not available from this repository.

Abstract

Context. Hot subdwarfs experienced strong mass loss on the Red Giant Branch (RGB) and are now hot and small He-burning objects. Aims. In this project we aim to perform a transit survey in all available light curves of hot subdwarfs from space-based telescopes (Kepler, K2, TESS, and CHEOPS), with our custom-made pipeline SHERLOCK, in order to determine the occurrence rate of planets around these stars, as a function of orbital period and planetary radius. Methods. In this first paper, we perform injection-and-recovery tests of synthetic transits for a selection of representative Kepler, K2 and TESS light curves, to determine which transiting bodies, in terms of object radius and orbital period, we will be able to detect with our tools. We also provide such estimates for CHEOPS data, which we analyze with the pycheops package. Results. Transiting objects with a radius $\lesssim$ 1.0 $R_{\Earth}$ can be detected in most of Kepler, K2 and CHEOPS targets for the shortest orbital periods (1 d and below), reaching values as small as $\sim$0.3 $R_{\Earth}$ in the best cases. Reaching sub-Earth-sized bodies is achieved only for the brightest TESS targets, and the ones observed during a significant number of sectors. We also give a series of representative results for farther and bigger planets, for which the performances strongly depend on the target magnitude, the length and the quality of the data. Conclusions. The TESS sample will provide the most important statistics for the global aim of measuring the planet occurrence rate around hot subdwarfs. The Kepler, K2 and CHEOPS data will allow us to search for planetary remnants, i.e. very close and small (possibly disintegrating) objects, which would have partly survived the engulfment in their red giant host.

Item URL in elib:https://elib.dlr.de/142182/
Document Type:Article
Additional Information:Full version not yet published. Preprint online at https://arxiv.org/abs/2104.10462
Title:A transit survey to search for planets around hot subdwarfs: I. methods and performance tests on light curves from Kepler, K2, TESS, and CHEOPS
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Van Grootel, V.Université de Liege, BelgiumUNSPECIFIED
Pozuelos, F.J.Université de Liege, BelgiumUNSPECIFIED
Thuillier, AUNSPECIFIEDUNSPECIFIED
Charpinet, SUNSPECIFIEDUNSPECIFIED
Delrez, L.Institut d Astrophysique et de Geophysique, Universite de Liege, Allee du 6 Aout, 17, Bat. B5C, Liege 1, BelgiumUNSPECIFIED
Beck, M.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIED
Fortier, AndreaUniversity of Berne, SwitzerlandUNSPECIFIED
Hoyer, S.Laboratoire d’Astrophysique de Marseille, Univ. de Provence, FranceUNSPECIFIED
Sousa, S. G.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, PortugalUNSPECIFIED
Barlow, B. N.UNSPECIFIEDUNSPECIFIED
Billot, N.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIED
Dévora-Pajares, M.UNSPECIFIEDUNSPECIFIED
Østensen, R.H.UNSPECIFIEDUNSPECIFIED
Alibert, Y.Physikalisches Institut, University of Bern;Observatoire de Besançon, Institut UTINAM, FranceUNSPECIFIED
Alonso, R.Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, SpainUNSPECIFIED
Anglada Escudé, GUNSPECIFIEDUNSPECIFIED
Asquier, J.ESA/ESTEC, Noordwijk, NiederlandeUNSPECIFIED
Barrado, D.Departamento de Astrofisica, Centro de Astrobiologia (INTA-CSIC), Campus ESAC (ESA)Camino Bajo del Castillo s/n 28692 Villanueva de la Canada, SpainUNSPECIFIED
Barros, S. C. C.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, PortugalUNSPECIFIED
Baumjohann, W.Space Research Institute, Austrian Academy of Sciences, Graz, AustriaUNSPECIFIED
Beck, T.Center for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, SwitzerlandUNSPECIFIED
Bekkelien, A.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIED
Benz, W.Physics Institute, Space Research & Planetary Sciences, University of Bern, Sidlerstr. 5, CH-3012 Bern, SwitzerlandUNSPECIFIED
Bonfils, X.Institut de Planétologie et d'Astrophysique, University of Grenoble, FranceUNSPECIFIED
Brandeker, A.Department of Astronomy – Stockholm University, SE-106 91 Stockholm, SwedenUNSPECIFIED
Broeg, ChrisUniversity of Berne, SwitzerlandUNSPECIFIED
Bruno, G.INAF, Osservatorio Astrofisico di Catania, Via S. Sofia 78,95123 Catania, ItalyUNSPECIFIED
Bàrczy, T.Admatis, Miskolc, HungaryUNSPECIFIED
Cabrera Perez, J.Juan.Cabrera (at) dlr.dehttps://orcid.org/0000-0001-6653-5487
Cameron, A.Department of Physics and Astronomy, University of St. Andrews, St. Andrews, Scotland, UKUNSPECIFIED
Charnoz, S.Institut de Physique du Globe, Paris, FranceUNSPECIFIED
Davies, M. B.Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, 22100, Lund, SwedenUNSPECIFIED
Deleuil, M.Aix Marseille Universite, CNRS, LAM (Laboratoire d Astrophysique de Marseille) UMR 7326, F-13388 Marseille, FranceUNSPECIFIED
Demangeon, O. D. S.Laboratoire d’Astrophysique de Marseille, Univ. de Provence, FranceUNSPECIFIED
Demory, B. O.Center for Space and Habitability, University of Bern, SwitzerlandUNSPECIFIED
Ehrenreich, DavidUniversity of Geneva, SwitzerlandUNSPECIFIED
Erikson, A.anders.erikson (at) dlr.deUNSPECIFIED
Fossati, L.Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8042 Graz, Austriahttps://orcid.org/0000-0003-4426-9530
Fridlund, M.Leiden Observatory, University of Leiden, PO Box 9513, 2300 RA, Leiden, The Netherlands | Department of Earth and Space Sciences, Chalmers University of Technology, Onsala Space Observatory, 439 92 Onsala, SwedenUNSPECIFIED
Futyan, D.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIED
Gandolfi, D.Dipartimento di Fisica, Università di Torino, via P. Giuria 1, I-10125 Torino, ItalyUNSPECIFIED
Gillon, M.Institut d’Astrophysique de l’Université Liège, Allèe du 6 Aout 17, 4000 Liège, BelgiumUNSPECIFIED
Guedel, MUNSPECIFIEDUNSPECIFIED
Heng, K.Center for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, SwitzerlandUNSPECIFIED
Isaak, K. G.ESA/ESTEC, Noordwijk, NiederlandeUNSPECIFIED
Kiss, L.Konkoly Observatory, Research Centre for Astronomy and Earth, Budapest, HungaryUNSPECIFIED
Laskar, J.IMCCE, Obs. de ParisUNSPECIFIED
Lecavelier des Etangs, A.Institut d Astrophysique de Paris, CNRS, UMR 7095 & Sorbonne Universites, UPMC Paris 6, 98 bis bd Arago, 75014 Paris, FranceUNSPECIFIED
Lendl, M.Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290, Versoix, SwitzerlandUNSPECIFIED
Lovis, C.Observatoire de l Universite de Geneve, 51 chemin des Maillettes, 1290 Sauverny, SwitzerlandUNSPECIFIED
Magrin, D.INAF - Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Maxted, P. F. L.Astrophysics Group, Keele University, Staffordshire ST5 5BG, UKUNSPECIFIED
Mecina, MUNSPECIFIEDUNSPECIFIED
Mustill, A.J.Lund Observatory, Department of Astronomy & Theoretical Physics, Lund University, Box 43, SE-221 00, Lund, SwedenUNSPECIFIED
Nascimbeni, V.NAF - Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, Padova, IT-35122, ItalyUNSPECIFIED
Olofsson, G.Department of Astronomy, Stockholm University, SwedenUNSPECIFIED
Ottensamer, R.Dept. of Astrophysics, University of Vienna, AustriaUNSPECIFIED
Pagano, I.INAF - Osservatorio Astrofisico di Catania, Via S. Sofia 78, 95123 Catania, ItalyUNSPECIFIED
Palle, E.Instituto de Astrofısica de Canarias, 38205 La Laguna, Tenerife, SpainUNSPECIFIED
Peter, G.Gisbert.Peter (at) dlr.deUNSPECIFIED
Piotto, G.INAF – Osservatorio Astronomico di Padova, vicolo dell Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Plesseria, J.-Y.Centre Spatial de Liège, BelgiumUNSPECIFIED
Pollacco, D.Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UKUNSPECIFIED
Queloz, D.Institute of Astronomy, University of Cambridge, United KingdomUNSPECIFIED
Ragazzoni, R.INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Rando, N.ESA/ESTEC, Noordwijk, NiederlandeUNSPECIFIED
Rauer, Hheike.rauer (at) dlr.deUNSPECIFIED
Ribas, I.Institute d´Estudis Espacials de Catalunya and Instituto de Ciencias des Espacio, Barcelona, SpainUNSPECIFIED
Santos, N. C.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, Portugal; Departamento de Fisica e Astronomia, Faculdade de Ciencias, Universidade do Porto, Rua Campo Alegre, 4169-007 Porto, PortugalUNSPECIFIED
Scandariato, G.NAF – Osservatorio Astronomico di Palermo, Piazza del Parlamento 1, 90134 Palermo, ItalyUNSPECIFIED
Segransan, D.Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290, Versoix, SwitzerlandUNSPECIFIED
Silvotti, RUNSPECIFIEDUNSPECIFIED
Simon, A. E.Physikalisches Institut, University of Bern, SwitzerlandUNSPECIFIED
Smith, Alexis M SAlexis.Smith (at) dlr.dehttps://orcid.org/0000-0002-2386-4341
Steller, ManfredSpace Research Institute, AustriaUNSPECIFIED
Szabó, Gy. M.Department of Experimental Physics & Astronomical Observatory, University of Szeged, Szeged, HungaryUNSPECIFIED
Thomas, N.Physikalisches Institut, Universitaet Bern, Sidlerstrasse 5, Bern, 3012 SwitzerlandUNSPECIFIED
Udry, S.Observatoire de Geneve, Universite de Geneve, 51 Chemin des Maillettes, 1290 Sauverny, SwitzerlandUNSPECIFIED
Viotto, V.INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Walton, NAInstitute of Astronomy, University of Cambridge, Cambridge, UKUNSPECIFIED
Westerdorff, KarstenKarsten.Westerdorff (at) dlr.deUNSPECIFIED
Wilson, T. G.School of Physics and Astronomy, St. Andrews, UKUNSPECIFIED
Date:2021
Journal or Publication Title:Astronomy & Astrophysics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Publisher:EDP Sciences
ISSN:0004-6361
Status:In Press
Keywords:Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - CHEOPS Science
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Extrasolar Planets and Atmospheres
Institute of Optical Sensor Systems
Institute of Planetary Research > Leitungsbereich PF
Deposited By: Smith, Dr Alexis M S
Deposited On:07 May 2021 12:42
Last Modified:07 May 2021 12:42

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