The EBLM project - IX. Five fully convective M-dwarfs, precisely measured with CHEOPS and TESS light curves

Sebastian, D. and Swayne, M. I. and Maxted, P. F. L. and Triaud, A. H. M. J. and Sousa, S. G. and Olofsson, G. and Beck, M. and Billot, N. and Hoyer, S. and Gill, S. and Heidari, N. and Martin, D. V. and Persson, C. M. and Standing, M. R. 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. P. and Baumjohann, W. and Beck, T. and Benz, W. and Bergomi, M. and Boisse, I. and Bonfils, X. and Brandeker, A. and Broeg, C. and Cabrera, J. and Charnoz, S. and Cameron, A. C. and Csizmadia, Szilard and Davies, M. B. and Deleuil, M. and Delrez, L. and Demangeon, O. D. S. and Demory, B. -O. and Dransfield, G. and Ehrenreich, D. and Erikson, A. and Fortier, A. and Fossati, L. and Fridlund, M. and Gandolfi, D. and Gillon, M. and Güdel, M. and Hasiba, J. and Hebrard, G. and Heng, K. and Isaak, Kate G. and Kiss, L. L. and Kopp, E. and Kunovac Hodžić, V. and Laskar, J. and Lecavelier des Etangs, A. and Lendl, M. and Lovis, C. and Magrin, D. and McCormac, J. and Miller, N. J. and Nascimbeni, V. and Ottensamer, R. and Pagano, I. and Palle, E. and Pepe, F. and Peter, G. and Piotto, G. and Pollacco, D. and Queloz, D. and Ragazzoni, R. and Rando, N. and Rauer, H. and Ribas, I. and Lalitha, S. and Santerne, A. and Santos, N. C. and Scandariato, G. and Segransan, D. and Simon, A. E. and Smith, A. M. S. and Steller, M. and Szabó, Gy. M. and Thomas, N. and Udry, S. and Van Grootel, V. and Walton, N. A. (2023) The EBLM project - IX. Five fully convective M-dwarfs, precisely measured with CHEOPS and TESS light curves. Monthly Notices of the Royal Astronomical Society, 519 (3), pp. 3546-3563. Oxford University Press. doi: 10.1093/mnras/stac2565. ISSN 0035-8711.

PDF - Published version
3MB

Official URL: https://academic.oup.com/mnras/article/519/3/3546/6696393

Abstract

Eclipsing binaries are important benchmark objects to test and calibrate stellar structure and evolution models. This is especially true for binaries with a fully convective M-dwarf component for which direct measurements of these stars' masses and radii are difficult using other techniques. Within the potential of M-dwarfs to be exoplanet host stars, the accuracy of theoretical predictions of their radius and effective temperature as a function of their mass is an active topic of discussion. Not only the parameters of transiting exoplanets but also the success of future atmospheric characterization relies on accurate theoretical predictions. We present the analysis of five eclipsing binaries with low-mass stellar companions out of a subsample of 23, for which we obtained ultra-high-precision light curves using the CHEOPS satellite. The observation of their primary and secondary eclipses are combined with spectroscopic measurements to precisely model the primary parameters and derive the M-dwarfs mass, radius, surface gravity, and effective temperature estimates using the PYCHEOPS data analysis software. Combining these results to the same set of parameters derived from TESS light curves, we find very good agreement (better than 1 per cent for radius and better than 0.2 per cent for surface gravity). We also analyse the importance of precise orbits from radial velocity measurements and find them to be crucial to derive M-dwarf radii in a regime below 5 per cent accuracy. These results add five valuable data points to the mass-radius diagram of fully convective M-dwarfs.

Item URL in elib:

https://elib.dlr.de/189094/

Document Type:

Article

Title:

The EBLM project - IX. Five fully convective M-dwarfs, precisely measured with CHEOPS and TESS light curves

Authors:

Authors	Institution or Email of Authors	Author's ORCID iD	ORCID Put Code
Sebastian, D.	School of Physics & Astronomy, University of Birmingham, Edg-baston, Birmingham, B15 2TT, UK	UNSPECIFIED	UNSPECIFIED
Swayne, M. I.	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	UNSPECIFIED	UNSPECIFIED
Sousa, S. G.	Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, Portugal	UNSPECIFIED	UNSPECIFIED
Olofsson, G.	Department of Astronomy, Stockholm University, Sweden	UNSPECIFIED	UNSPECIFIED
Beck, M.	Université de Genève, Switzerland	UNSPECIFIED	UNSPECIFIED
Billot, N.	Université de Genève, Switzerland	UNSPECIFIED	UNSPECIFIED
Hoyer, S.	Laboratoire d’Astrophysique de Marseille, Univ. de Provence, France	UNSPECIFIED	UNSPECIFIED
Gill, S.	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
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
Martin, D. V.	Department of Astronomy, The Ohio State University, 4055 McPherson Laboratory, Columbus, OH 43210, USA	UNSPECIFIED	UNSPECIFIED
Persson, C. M.	Department of Earth and Space Sciences, Chalmers University of Technology, Onsala Space Observatory, 439 92, Onsala, Sweden	UNSPECIFIED	UNSPECIFIED
Standing, M. R.	School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK	UNSPECIFIED	UNSPECIFIED
Alibert, Y.	Physikalisches Institut, University of Bern;Observatoire de Besançon, Institut UTINAM, France	UNSPECIFIED	UNSPECIFIED
Alonso, R.	Instituto de Astrofisica de Canarias (IAC), Via Lactea s/n 38200, La Laguna, 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.	ESTEC, European Space Agency, 2201AZ, Noordwijk, NL	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 Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, Portugal	UNSPECIFIED	UNSPECIFIED
Battley, M. P.	Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom	UNSPECIFIED	UNSPECIFIED
Baumjohann, W.	Space Research Institute, Austrian Academy of Sciences, Graz, Austria	https://orcid.org/0000-0001-6271-0110	UNSPECIFIED
Beck, T.	Center for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Benz, W.	Physikalisches Institut, Universität Bern, CH	UNSPECIFIED	UNSPECIFIED
Bergomi, M.	INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, Italy	UNSPECIFIED	UNSPECIFIED
Boisse, I.	Aix Marseille Univ, CNRS, CNES, LAM, 38 rue Frédéric Joliot-Curie, 13388 Marseille, France	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
Broeg, C.	Physikalisches Institut, University of Bern, Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Cabrera, J.	UNSPECIFIED	https://orcid.org/0000-0001-6653-5487	UNSPECIFIED
Charnoz, S.	Institut de Physique du Globe de Paris, France	UNSPECIFIED	UNSPECIFIED
Cameron, A. C.	School of Physics and Astronomy, University of St. Andrews, Scotland, UK	UNSPECIFIED	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, France	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. D. S.	Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762, Porto, Portugal	UNSPECIFIED	UNSPECIFIED
Demory, B. -O.	Center for Space and Habitability, Gesellsschaftstrasse 6, 3012, Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Dransfield, G.	School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK	UNSPECIFIED	UNSPECIFIED
Ehrenreich, D.	Observatoire de Genève, University of Geneva, Switzerland	UNSPECIFIED	UNSPECIFIED
Erikson, A.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Fortier, A.	Physikalisches Institut, University of Bern, 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.	Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, 439 92 Onsala, Sweden; Leiden Observatory, University of Leiden, PO Box 9513, 2300 RA Leiden, The Netherlands	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, Geophysique et Oceanographie, Universite de Liege, B-4000 Liege, Belgium	UNSPECIFIED	UNSPECIFIED
Güdel, M.	Department of Astrophysics, University of Vienna, Tuerkenschanzstrasse 17, A-1180 Vienna, Austria	UNSPECIFIED	UNSPECIFIED
Hasiba, J.	Space Research Institute, Austrian Academy of Sciences, Schmiedlstraße 6, 8042, Graz, 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
Heng, K.	Center for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Isaak, Kate G.	Science and Operations Department - Science Division (SCI-SC), Directorate of Science, European Space Agency (ESA), European Space Research and Technology Centre (ESTEC), Keplerlaan 1, NL-2201 AZ Noordwijk, the Netherlands	UNSPECIFIED	UNSPECIFIED
Kiss, L. L.	Konkoly Observatory, Research Centre for Astronomy and Earth, Budapest, Hungary	UNSPECIFIED	UNSPECIFIED
Kopp, E.	Physikalisches Institut, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Kunovac Hodžić, V.	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.	Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290, Versoix, Switzerland	UNSPECIFIED	UNSPECIFIED
Lovis, C.	Observatoire de l Universite de Geneve, 51 chemin des Maillettes, 1290 Sauverny, Switzerland	UNSPECIFIED	UNSPECIFIED
Magrin, D.	INAF, Astronomical Institute, Padua, 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. J.	Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK	UNSPECIFIED	UNSPECIFIED
Nascimbeni, V.	INAF – Osservatorio Astronomico di Padova, vicolo dell Osservatorio 5, 35122 Padova, Italy	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 Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain \| Departamento de Astrofisica, Universidad de La Laguna, 38206 La Laguna, Spain	UNSPECIFIED	UNSPECIFIED
Pepe, F.	Observatoire de Geneve, Universite de Geneve, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland	UNSPECIFIED	UNSPECIFIED
Peter, G.	UNSPECIFIED	https://orcid.org/0000-0001-6101-2513	UNSPECIFIED
Piotto, G.	INAF – Osservatorio Astronomico di Padova, vicolo dell Osservatorio 5, 35122 Padova, Italy	UNSPECIFIED	UNSPECIFIED
Pollacco, D.	Dept. of Physics, University of Warwick, United Kingdom	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, H.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Ribas, I.	Institut de Ciencies de l Espai (CSIC-IEEC), Carrer de Can Magrans, Campus UAB, E-08193 Bellaterra, Spain	UNSPECIFIED	UNSPECIFIED
Lalitha, S.	School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK	UNSPECIFIED	UNSPECIFIED
Santerne, A.	Aix Marseille Universite, CNRS, LAM (Laboratoire d Astrophysique de Marseille) UMR 7326, 13388, Marseille, France	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
Simon, A. E.	Physikalisches Institut, University of Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Smith, A. M. S.	UNSPECIFIED	https://orcid.org/0000-0002-2386-4341	UNSPECIFIED
Steller, M.	Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042, Graz, Austria	UNSPECIFIED	UNSPECIFIED
Szabó, Gy. M.	ELTE Eötvös Loránd University, Gothard Astrophysical Observatory, 9700, Szombathely, Szent Imre h. u. 112, Hungary ; MTA-ELTE Exoplanet Research Group, 9700, Szombathely, Szent Imre h. u. 112, Hungary	UNSPECIFIED	UNSPECIFIED
Thomas, N.	Physikalisches Institut, University of Bern, Gesellsschaftstrasse 6, 3012, Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Udry, S.	Observatoire de Genève, Sauverny, Switzerland	UNSPECIFIED	UNSPECIFIED
Van Grootel, V.	STAR, Université de Liège, Belgium	UNSPECIFIED	UNSPECIFIED
Walton, N. A.	Institute of Astronomy, University of Cambridge, Cambridge, UK	UNSPECIFIED	UNSPECIFIED

Date:

2023

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:

519

DOI:

10.1093/mnras/stac2565

Page Range:

pp. 3546-3563

Publisher:

Oxford University Press

ISSN:

0035-8711

Status:

Published

Keywords:

binaries: eclipsing, stars: fundamental parameters, stars: low-mass, techniques: photometric, techniques: spectroscopic, 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, R - Project CHEOPS

Location:

Berlin-Adlershof

Institutes and Institutions:

Institute of Planetary Research > Extrasolar Planets and Atmospheres
Institute of Planetary Research > Leitungsbereich PF
Institute of Optical Sensor Systems > Space Instruments

Deposited By:

Smith, Dr Alexis M S

Deposited On:

06 Mar 2023 11:16

Last Modified:

06 Mar 2023 11:16

Repository Staff Only: item control page