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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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:

Authors	Institution or Email of Authors	Author's ORCID iD	ORCID Put Code
Swayne, M	Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK	https://orcid.org/0000-0002-2609-3159	UNSPECIFIED
Maxted, P. F. L.	Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK	UNSPECIFIED	UNSPECIFIED
Triaud, A. H. M. J.	School of Physics & Astronomy, University of Birmingham, Edg-baston, Birmingham, B15 2TT, UK	https://orcid.org/0000-0002-5510-8751	UNSPECIFIED
Sousa, S. G.	Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, Portugal	https://orcid.org/0000-0001-9047-2965	UNSPECIFIED
Broeg, Chris	University of Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Florén, H. -G.	Department of Astronomy, Stockholm University, AlbaNova University Center, SE-10691 Stockholm, Sweden	UNSPECIFIED	UNSPECIFIED
Guterman, P.	Laboratoire d'Astrophysique de Marseille, France	UNSPECIFIED	UNSPECIFIED
Simon, A. E.	Center for Space and Habitability, University of Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Boisse, I.	Aix Marseille Univ, CNRS, CNES, LAM, 38 rue Frédéric Joliot-Curie, 13388 Marseille, France	UNSPECIFIED	UNSPECIFIED
Bonfanti, A.	Space Research Institute, Austrian Academy of Sciences, Austria	UNSPECIFIED	UNSPECIFIED
Martin, D.	Department of Astronomy, The Ohio State University, Columbus, OH 43210, USA	UNSPECIFIED	UNSPECIFIED
Santerne, A.	Aix Marseille Universite, CNRS, LAM (Laboratoire d Astrophysique de Marseille) UMR 7326, 13388, Marseille, France	https://orcid.org/0000-0002-3586-1316	UNSPECIFIED
Salmon, S	Observatoire Astronomique de l'Université de Genève, Chemin Pegasi 51, 1290 Versoix, Switzerland	UNSPECIFIED	UNSPECIFIED
Standing, M. R.	School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK	UNSPECIFIED	UNSPECIFIED
Van Grootel, V.	Université de Liege, Belgium	UNSPECIFIED	UNSPECIFIED
Wilson, T. G.	School of Physics and Astronomy, St. Andrews, UK	https://orcid.org/0000-0001-8749-1962	UNSPECIFIED
Alibert, Y.	University of Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Alonso, R.	Instituto de Astrofisica de Canarias, C/via Lactea s/n, 38205 La Laguna, Tenerife, Spain	UNSPECIFIED	UNSPECIFIED
Anglada Escudé, G	Institut de Ciències de l’Espai (ICE, CSIC), Campus UAB, CanMagrans s/n, 08193 Bellaterra, Spain; Institut d’Estudis Espacials de Catalunya (IEEC), 08034 Barcelona,Spain	UNSPECIFIED	UNSPECIFIED
Asquier, J.	ESA/ESTEC, Noordwijk, Niederlande	UNSPECIFIED	UNSPECIFIED
Bàrczy, T.	Admatis, Miskolc, Hungary	UNSPECIFIED	UNSPECIFIED
Barrado, D.	Departamento de Astrofisica, Centro de Astrobiologia (INTA-CSIC), Campus ESAC (ESA)Camino Bajo del Castillo s/n 28692 Villanueva de la Canada, Spain	UNSPECIFIED	UNSPECIFIED
Barros, S.C.C.	instituto de astrofísica e ciências do espaço, universidade de porto, caup, rua das estrelas, 4150-762 porto, portugal	UNSPECIFIED	UNSPECIFIED
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, UK	UNSPECIFIED	UNSPECIFIED
Baumjohann, W.	Space Research Institute, Austrian Academy of Sciences, Graz, Austria	UNSPECIFIED	UNSPECIFIED
Beck, M.	Observatoire de Genève, University of Geneva, Switzerland	UNSPECIFIED	UNSPECIFIED
Beck, T.	Center for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Bekkelien, A.	Observatoire Astronomique de l'Université de Genève, Chemin Pegasi 51, 1290 Versoix, Switzerland	UNSPECIFIED	UNSPECIFIED
Benz, W.	Physikalisches Institut, University of Bern, Schweiz	UNSPECIFIED	UNSPECIFIED
Billot, N.	Observatoire de Genève, University of Geneva, Switzerland	UNSPECIFIED	UNSPECIFIED
Bonfils, X.	Institut de Planétologie et d'Astrophysique, University of Grenoble, France	UNSPECIFIED	UNSPECIFIED
Brandeker, A.	Department of Astronomy , Stockholm University, SE-106 91 Stockholm, Sweden	UNSPECIFIED	UNSPECIFIED
Busch, M.-D.	Physikalisches Institut, Universität Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Cabrera Perez, Juan	UNSPECIFIED	https://orcid.org/0000-0001-6653-5487	UNSPECIFIED
Charnoz, S.	Institut de Physique du Globe de Paris, France	UNSPECIFIED	UNSPECIFIED
Collier Cameron, A.	SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife KY16 9SS, UK	https://orcid.org/0000-0002-8863-7828	UNSPECIFIED
Csizmadia, Szilard	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Davies, M. B.	Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, 22100, Lund, Sweden	UNSPECIFIED	UNSPECIFIED
Deleuil, M	Laboratoire d'Astrophysique de Marseille	UNSPECIFIED	UNSPECIFIED
Deline, A.	Observatoire de Genève, University of Geneva, Switzerland	UNSPECIFIED	UNSPECIFIED
Delrez, L.	Institut d Astrophysique et de Geophysique, Universite de Liege, Allee du 6 Aout, 17, Bat. B5C, Liege 1, Belgium	UNSPECIFIED	UNSPECIFIED
Demangeon, O.	instituto de astrofísica e ciências do espaço, universidade de porto, caup, rua das estrelas, 4150-762 porto, portugal	UNSPECIFIED	UNSPECIFIED
Demory, Brice-Olivier	University of Bern, Center for Space and Habitability, Gesellschaftsstrasse 6, CH-3012 Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Dransfield, G.	School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK	UNSPECIFIED	UNSPECIFIED
Ehrenreich, David	University of Geneva, Switzerland	UNSPECIFIED	UNSPECIFIED
Erikson, A	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Fortier, Andrea	University of Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Fossati, L.	Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8042 Graz, Austria	https://orcid.org/0000-0003-4426-9530	UNSPECIFIED
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 La	https://orcid.org/0000-0002-0855-8426	UNSPECIFIED
Futyan, D.	Observatoire de Genève, University of Geneva, Switzerland	UNSPECIFIED	UNSPECIFIED
Gandolfi, D.	Dipartimento di Fisica, Universita degli Studi di Torino, via Pietro Giuria 1, 10125, Torino, Italy	https://orcid.org/0000-0001-8627-9628	UNSPECIFIED
Gillon, M.	Institut d Astrophysique et de Geophysique, Universite de Liege, Allee du 6 Aout, 17, Bat. B5C, Liege 1, Belgium	UNSPECIFIED	UNSPECIFIED
Güdel, Manuel	Institute for Astronomy, University of Vienna, Türkenschanzstr. 17, A-1180 Vienna, Austria	UNSPECIFIED	UNSPECIFIED
Hebrard, G.	Institut d Astrophysique de Paris, CNRS, UMR 7095 & Sorbonne Universites, UPMC Paris 6, 98 bis bd Arago, 75014 Paris, France	UNSPECIFIED	UNSPECIFIED
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-So	UNSPECIFIED	UNSPECIFIED
Hellier, C	Keele University, Staffordshire	UNSPECIFIED	UNSPECIFIED
Heng, K.	Center for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Hobson, Melissa J.	Millennium Institute for Astrophysics, Chile; Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, Chile	UNSPECIFIED	UNSPECIFIED
Hoyer, S.	Aix Marseille Univ, CNRS, CNES, LAM, 38 rue Frédéric Joliot-Curie, 13388 Marseille, France	https://orcid.org/0000-0003-3477-2466	UNSPECIFIED
Isaak, K. G.	ESA/ESTEC, Noordwijk, Niederlande	UNSPECIFIED	UNSPECIFIED
Kiss, L.	Konkoly Observatory, Research Centre for Astronomy and Earth, Budapest, Hungary	UNSPECIFIED	UNSPECIFIED
Kunovac Hodžić, V.	School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK	UNSPECIFIED	UNSPECIFIED
Lalitha, S.	School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK	UNSPECIFIED	UNSPECIFIED
Laskar, J.	IMCCE, UMR8028 CNRS, Observatoire de Paris, PSL Univ.,Sorbonne Univ., 77 av. Denfert-Rochereau, 75014 Paris, France	UNSPECIFIED	UNSPECIFIED
Lecavelier des Etangs, A.	Institut d Astrophysique de Paris, CNRS, UMR 7095 & Sorbonne Universites, UPMC Paris 6, 98 bis bd Arago, 75014 Paris, France	UNSPECIFIED	UNSPECIFIED
Lendl, M	Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, CH-1290 Sauverny, Switzerland	UNSPECIFIED	UNSPECIFIED
Lovis, C.	Observatoire de l Universite de Geneve, 51 chemin des Maillettes, 1290 Sauverny, Switzerland	UNSPECIFIED	UNSPECIFIED
Magrin, D.	INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, Italy	UNSPECIFIED	UNSPECIFIED
Marafatto, L.	INAF - Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy	UNSPECIFIED	UNSPECIFIED
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, UK	UNSPECIFIED	UNSPECIFIED
Miller, N.	Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK	UNSPECIFIED	UNSPECIFIED
Nascimbeni, V.	Dipartimento di Fisica ed Astronomia, Universitá degli Studi di Padova, Vicolo dell'Osservatorio 3, 35122 Padova, Italy	UNSPECIFIED	UNSPECIFIED
Olofsson, G.	Department of Astronomy, Stockholm University, Sweden	UNSPECIFIED	UNSPECIFIED
Ottensamer, R.	University of Vienna, Department of Astrophysics, Austria	UNSPECIFIED	UNSPECIFIED
Pagano, I.	INAF – Osservatorio Astrofisico di Catania, Via S.Sofia 78, 95123 Catania, Italy	UNSPECIFIED	UNSPECIFIED
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, Spain	UNSPECIFIED	UNSPECIFIED
Peter, Gisbert	UNSPECIFIED	https://orcid.org/0000-0001-6101-2513	UNSPECIFIED
Piotto, G	Dipartimento di Fisica e Astronomia, Universitá di Padova, Padova, Italy	UNSPECIFIED	UNSPECIFIED
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, UK	UNSPECIFIED	UNSPECIFIED
Queloz, D.	Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 0HE, UK	UNSPECIFIED	UNSPECIFIED
Ragazzoni, R.	INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, Italy	UNSPECIFIED	UNSPECIFIED
Rando, N.	ESA/ESTEC, Noordwijk, Niederlande	UNSPECIFIED	UNSPECIFIED
Rauer, Heike	UNSPECIFIED	https://orcid.org/0000-0002-6510-1828	UNSPECIFIED
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, Spain	UNSPECIFIED	UNSPECIFIED
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, Portugal	UNSPECIFIED	UNSPECIFIED
Scandariato, G.	NAF – Osservatorio Astronomico di Palermo, Piazza del Parlamento 1, 90134 Palermo, Italy	UNSPECIFIED	UNSPECIFIED
Segransan, D.	Observatoire de Geneve, Universite de Geneve, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland	UNSPECIFIED	UNSPECIFIED
Smith, Alexis M S	UNSPECIFIED	https://orcid.org/0000-0002-2386-4341	UNSPECIFIED
Steinberger, B.	Centre for Geodynamics, Norwegian Geological Survey, Trondheim, Norway	UNSPECIFIED	UNSPECIFIED
Steller, M.	Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042, Graz, Austria	UNSPECIFIED	UNSPECIFIED
Szabo, Gy. M.	Department of Experimental Physics & Astronomical Observatory, Szedeg, Hungary	UNSPECIFIED	UNSPECIFIED
Thomas, N.	Physikalisches Institut Universität Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Udry, S.	Observatoire de Geneve, Universite de Geneve, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland	UNSPECIFIED	UNSPECIFIED
Walter, Ingo	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Walton, N. A.	Institute of Astronomy, University of Cambridge, Cambridge, UK	UNSPECIFIED	UNSPECIFIED
Willett, E.	School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK	UNSPECIFIED	UNSPECIFIED

Date:

10 June 2021

Journal or Publication Title:

Monthly Notices of the Royal Astronomical Society

Refereed publication:

Yes

Open Access:

Yes

Gold Open Access:

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:

05 Dec 2023 08:18

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