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The EBLM project - VIII. First results for M-dwarf mass, radius, and effective temperature measurements using CHEOPS light curves

Swayne, M and Maxted, P. F. L. and Triaud, A. H. M. J. and Sousa, S. G. and Broeg, Chris and Florén, H. -G. and Guterman, P. and Simon, A. E. and Boisse, I. and Bonfanti, A. and Martin, D. and Santerne, A. and Salmon, S and Standing, M. R. and Van Grootel, V. and Wilson, T. G. and Alibert, Y. and Alonso, R. and Anglada Escudé, G and Asquier, J. and Bàrczy, T. and Barrado, D. and Barros, S.C.C. and Battley, M. and Baumjohann, W. and Beck, M. and Beck, T. and Bekkelien, A. and Benz, W. and Billot, N. and Bonfils, X. and Brandeker, A. and Busch, M.-D. and Cabrera Perez, Juan and Charnoz, S. and Collier Cameron, A. and Csizmadia, Szilard and Davies, M. B. and Deleuil, M and Deline, A. and Delrez, L. and Demangeon, O. and Demory, Brice-Olivier and Dransfield, G. and Ehrenreich, David and Erikson, A and Fortier, Andrea and Fossati, L. and Fridlund, M. and Futyan, D. and Gandolfi, D. and Gillon, M. and Güdel, Manuel and Hebrard, G. and Heidari, N. and Hellier, C and Heng, K. and Hobson, Melissa J. and Hoyer, S. and Isaak, K. G. and Kiss, L. and Kunovac Hodžić, V. and Lalitha, S. and Laskar, J. and Lecavelier des Etangs, A. and Lendl, M and Lovis, C. and Magrin, D. and Marafatto, L. and McCormac, J. and Miller, N. and Nascimbeni, V. and Olofsson, G. and Ottensamer, R. and Pagano, I. and Palle, E. and Peter, Gisbert and Piotto, G and Pollacco, D. and Queloz, D. and Ragazzoni, R. and Rando, N. and Rauer, Heike and Ribas, I. and Santos, N. C. and Scandariato, G. and Segransan, D. and Smith, Alexis M S and Steinberger, B. and Steller, M. and Szabo, Gy. M. and Thomas, N. and Udry, S. and Walter, Ingo and Walton, N. A. and Willett, E. (2021) The EBLM project - VIII. First results for M-dwarf mass, radius, and effective temperature measurements using CHEOPS light curves. Monthly Notices of the Royal Astronomical Society, 506 (1), pp. 306-322. Oxford University Press. doi: 10.1093/mnras/stab1687. ISSN 0035-8711.

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Official URL: https://ui.adsabs.harvard.edu/link_gateway/2021MNRAS.506..306S/PUB_HTML

Abstract

The accuracy of theoretical mass, radius, and effective temperature values for M-dwarf stars is an active topic of debate. Differences between observed and theoretical values have raised the possibility that current theoretical stellar structure and evolution models are inaccurate towards the low-mass end of the main sequence. To explore this issue, we use the CHEOPS satellite to obtain high-precision light curves of eclipsing binaries with low-mass stellar companions. We use these light curves combined with the spectroscopic orbit for the solar-type companion to measure the mass, radius, and effective temperature of the M-dwarf star. Here, we present the analysis of three eclipsing binaries. We use the PYCHEOPS data analysis software to fit the observed transit and eclipse events of each system. Two of our systems were also observed by the TESS satellite - we similarly analyse these light curves for comparison. We find consistent results between CHEOPS and TESS, presenting three stellar radii and two stellar effective temperature values of low-mass stellar objects. These initial results from our on-going observing programme with CHEOPS show that we can expect to have ~24 new mass, radius, and effective temperature measurements for very low-mass stars within the next few years.

Item URL in elib:https://elib.dlr.de/144459/
Document Type:Article
Title:The EBLM project - VIII. First results for M-dwarf mass, radius, and effective temperature measurements using CHEOPS light curves
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Swayne, MAstrophysics Group, Keele University, Staffordshire ST5 5BG, UKhttps://orcid.org/0000-0002-2609-3159
Maxted, P. F. L.Astrophysics Group, Keele University, Staffordshire ST5 5BG, UKUNSPECIFIED
Triaud, A. H. M. J.School of Physics & Astronomy, University of Birmingham, Edg-baston, Birmingham, B15 2TT, UKhttps://orcid.org/0000-0002-5510-8751
Sousa, S. G.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, Portugalhttps://orcid.org/0000-0001-9047-2965
Broeg, ChrisUniversity of Bern, SwitzerlandUNSPECIFIED
Florén, H. -G.Department of Astronomy, Stockholm University, AlbaNova University Center, SE-10691 Stockholm, SwedenUNSPECIFIED
Guterman, P.Laboratoire d'Astrophysique de Marseille, FranceUNSPECIFIED
Simon, A. E.Center for Space and Habitability, University of Bern, SwitzerlandUNSPECIFIED
Boisse, I.Aix Marseille Univ, CNRS, CNES, LAM, 38 rue Frédéric Joliot-Curie, 13388 Marseille, FranceUNSPECIFIED
Bonfanti, A.Space Research Institute, Austrian Academy of Sciences, AustriaUNSPECIFIED
Martin, D.Department of Astronomy, The Ohio State University, Columbus, OH 43210, USAUNSPECIFIED
Santerne, A.Aix Marseille Universite, CNRS, LAM (Laboratoire d Astrophysique de Marseille) UMR 7326, 13388, Marseille, Francehttps://orcid.org/0000-0002-3586-1316
Salmon, SObservatoire Astronomique de l'Université de Genève, Chemin Pegasi 51, 1290 Versoix, SwitzerlandUNSPECIFIED
Standing, M. R.School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UKUNSPECIFIED
Van Grootel, V.Université de Liege, BelgiumUNSPECIFIED
Wilson, T. G.School of Physics and Astronomy, St. Andrews, UKhttps://orcid.org/0000-0001-8749-1962
Alibert, Y.University of Bern, SwitzerlandUNSPECIFIED
Alonso, R.Instituto de Astrofisica de Canarias, C/via Lactea s/n, 38205 La Laguna, Tenerife, SpainUNSPECIFIED
Anglada Escudé, GInstitut de Ciències de l’Espai (ICE, CSIC), Campus UAB, CanMagrans s/n, 08193 Bellaterra, Spain; Institut d’Estudis Espacials de Catalunya (IEEC), 08034 Barcelona,SpainUNSPECIFIED
Asquier, J.ESA/ESTEC, Noordwijk, NiederlandeUNSPECIFIED
Bàrczy, T.Admatis, Miskolc, HungaryUNSPECIFIED
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 astrofísica e ciências do espaço, universidade de porto, caup, rua das estrelas, 4150-762 porto, portugalUNSPECIFIED
Battley, M.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
Baumjohann, W.Space Research Institute, Austrian Academy of Sciences, Graz, AustriaUNSPECIFIED
Beck, M.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIED
Beck, T.Center for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, SwitzerlandUNSPECIFIED
Bekkelien, A.Observatoire Astronomique de l'Université de Genève, Chemin Pegasi 51, 1290 Versoix, SwitzerlandUNSPECIFIED
Benz, W.Physikalisches Institut, University of Bern, SchweizUNSPECIFIED
Billot, N.Observatoire de Genève, University of Geneva, 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
Busch, M.-D.Physikalisches Institut, Universität Bern, SwitzerlandUNSPECIFIED
Cabrera Perez, JuanJuan.Cabrera (at) dlr.dehttps://orcid.org/0000-0001-6653-5487
Charnoz, S.Institut de Physique du Globe de Paris, FranceUNSPECIFIED
Collier Cameron, A.SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife KY16 9SS, UKhttps://orcid.org/0000-0002-8863-7828
Csizmadia, Szilardszilard.csizmadia (at) dlr.deUNSPECIFIED
Davies, M. B.Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, 22100, Lund, SwedenUNSPECIFIED
Deleuil, MLaboratoire d'Astrophysique de MarseilleUNSPECIFIED
Deline, A.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIED
Delrez, L.Institut d Astrophysique et de Geophysique, Universite de Liege, Allee du 6 Aout, 17, Bat. B5C, Liege 1, BelgiumUNSPECIFIED
Demangeon, O.instituto de astrofísica e ciências do espaço, universidade de porto, caup, rua das estrelas, 4150-762 porto, portugalUNSPECIFIED
Demory, Brice-OlivierUniversity of Bern, Center for Space and Habitability, Gesellschaftsstrasse 6, CH-3012 Bern, SwitzerlandUNSPECIFIED
Dransfield, G.School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UKUNSPECIFIED
Ehrenreich, DavidUniversity of Geneva, SwitzerlandUNSPECIFIED
Erikson, Aanders.erikson (at) dlr.deUNSPECIFIED
Fortier, AndreaUniversity of Bern, SwitzerlandUNSPECIFIED
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, Leiden University, 2333CA Leiden, The Netherlands; Chalmers University of Technology, Department of Space, Earth and Environment, Onsala Space Observatory, SE-439 92 Onsala, Sweden; Instituto de Astrofísica de Canarias (IAC), 38205 Lahttps://orcid.org/0000-0002-0855-8426
Futyan, D.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIED
Gandolfi, D.Dipartimento di Fisica, Universita degli Studi di Torino, via Pietro Giuria 1, 10125, Torino, Italyhttps://orcid.org/0000-0001-8627-9628
Gillon, M.Institut d Astrophysique et de Geophysique, Universite de Liege, Allee du 6 Aout, 17, Bat. B5C, Liege 1, BelgiumUNSPECIFIED
Güdel, ManuelInstitute for Astronomy, University of Vienna, Türkenschanzstr. 17, A-1180 Vienna, AustriaUNSPECIFIED
Hebrard, G.Institut d Astrophysique de Paris, CNRS, UMR 7095 & Sorbonne Universites, UPMC Paris 6, 98 bis bd Arago, 75014 Paris, FranceUNSPECIFIED
Heidari, N.Aix Marseille Univ, CNRS, CNES, LAM, 38 rue Frédéric Joliot-Curie, 13388 Marseille, France; Department of Physics, Shahid Beheshti University, Tehran 1983969411, Iran; Laboratoire J.-L. Lagrange, Observatoire de la Côte d'Azur (OCA), Universite de Nice-SoUNSPECIFIED
Hellier, CKeele University, StaffordshireUNSPECIFIED
Heng, K.Center for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, SwitzerlandUNSPECIFIED
Hobson, Melissa J.Millennium Institute for Astrophysics, Chile; Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, ChileUNSPECIFIED
Hoyer, S.Aix Marseille Univ, CNRS, CNES, LAM, 38 rue Frédéric Joliot-Curie, 13388 Marseille, Francehttps://orcid.org/0000-0003-3477-2466
Isaak, K. G.ESA/ESTEC, Noordwijk, NiederlandeUNSPECIFIED
Kiss, L.Konkoly Observatory, Research Centre for Astronomy and Earth, Budapest, HungaryUNSPECIFIED
Kunovac Hodžić, V.School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UKUNSPECIFIED
Lalitha, S.School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UKUNSPECIFIED
Laskar, J.IMCCE, UMR8028 CNRS, Observatoire de Paris, PSL Univ.,Sorbonne Univ., 77 av. Denfert-Rochereau, 75014 Paris, FranceUNSPECIFIED
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, MObservatoire de Genève, Université de Genève, 51 Ch. des Maillettes, CH-1290 Sauverny, 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
Marafatto, L.INAF - Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
McCormac, J.Dept. 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
Miller, N.Astrophysics Group, Keele University, Staffordshire ST5 5BG, UKUNSPECIFIED
Nascimbeni, V.Dipartimento di Fisica ed Astronomia, Universitá degli Studi di Padova, Vicolo dell'Osservatorio 3, 35122 Padova, ItalyUNSPECIFIED
Olofsson, G.Department of Astronomy, Stockholm University, SwedenUNSPECIFIED
Ottensamer, R.University of Vienna, Department of Astrophysics, AustriaUNSPECIFIED
Pagano, I.INAF – Osservatorio Astrofisico di Catania, Via S.Sofia 78, 95123 Catania, ItalyUNSPECIFIED
Palle, E.Instituto de Astrofisica de Canarias (IAC), 38205, La Laguna, Tenerife, Spain; Departamento de Astrofisica, Universidad de La Laguna (ULL), 38206, La Laguna, Tenerife, SpainUNSPECIFIED
Peter, Gisbertgisbert.peter (at) dlr.dehttps://orcid.org/0000-0001-6101-2513
Piotto, GDipartimento di Fisica e Astronomia, Universitá di Padova, Padova, ItalyUNSPECIFIED
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.Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 0HE, UKUNSPECIFIED
Ragazzoni, R.INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Rando, N.ESA/ESTEC, Noordwijk, NiederlandeUNSPECIFIED
Rauer, Heikeheike.rauer (at) dlr.dehttps://orcid.org/0000-0002-6510-1828
Ribas, I.Institut de Ciencies de l' Espai (ICE, CSIC), C/Can Magrans, s/n, Campus UAB, 08193, Bellaterra, Spain; Institut d'Estudis Espacials de Catalunya (IEEC), 08034, 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.Observatoire de Geneve, Universite de Geneve, 51 Chemin des Maillettes, 1290 Sauverny, SwitzerlandUNSPECIFIED
Smith, Alexis M SAlexis.Smith (at) dlr.dehttps://orcid.org/0000-0002-2386-4341
Steinberger, B.Centre for Geodynamics, Norwegian Geological Survey, Trondheim, NorwayUNSPECIFIED
Steller, M.Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042, Graz, AustriaUNSPECIFIED
Szabo, Gy. M.Department of Experimental Physics & Astronomical Observatory, Szedeg, HungaryUNSPECIFIED
Thomas, N.Physikalisches Institut Universität Bern, SwitzerlandUNSPECIFIED
Udry, S.Observatoire de Geneve, Universite de Geneve, 51 Chemin des Maillettes, 1290 Sauverny, SwitzerlandUNSPECIFIED
Walter, IngoIngo.Walter (at) dlr.deUNSPECIFIED
Walton, N. A.Institute of Astronomy, University of Cambridge, Cambridge, UKUNSPECIFIED
Willett, E.School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UKUNSPECIFIED
Date:2021
Journal or Publication Title:Monthly Notices of the Royal Astronomical Society
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:506
DOI :10.1093/mnras/stab1687
Page Range:pp. 306-322
Publisher:Oxford University Press
ISSN:0035-8711
Status:Published
Keywords:techniques: photometric; techniques: spectroscopic; binaries: eclipsing; stars: fundamental parameters; stars: low-mass; Astrophysics - Solar and Stellar Astrophysics; Astrophysics - Earth and Planetary 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 > Space Instruments
Institute of Planetary Research > Leitungsbereich PF
Deposited By: Cabrera Perez, Juan
Deposited On:13 Oct 2021 08:34
Last Modified:13 Oct 2021 08:34

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