The EBLM project – IX. Five fully convective M-dwarfs, precisely measured with <i>CHEOPS</i> and <i>TESS</i> light curves-Reference-Cited by-同舟云学术

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

Published:2022-09-12 Issue:3 Volume:519 Page:3546-3563
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Sebastian D¹^ORCID,Swayne M I²^ORCID,Maxted P F L²^ORCID,Triaud A H M J¹^ORCID,Sousa S G³^ORCID,Olofsson G⁴^ORCID,Beck M⁵^ORCID,Billot N⁵^ORCID,Hoyer S⁶^ORCID,Gill S⁷,Heidari N⁶,Martin D V⁸^ORCID,Persson C M⁹,Standing M R¹^ORCID,Alibert Y¹⁰^ORCID,Alonso R¹¹¹²^ORCID,Anglada G¹³¹⁴^ORCID,Asquier J¹⁵,Bárczy T¹⁶^ORCID,Barrado D¹⁷^ORCID,Barros S C C³¹⁸^ORCID,Battley M P⁷^ORCID,Baumjohann W¹⁹^ORCID,Beck T¹⁰,Benz W¹⁰²⁰^ORCID,Bergomi M²¹,Boisse I⁶,Bonfils X²²^ORCID,Brandeker A⁴^ORCID,Broeg C¹⁰²⁰^ORCID,Cabrera J²³,Charnoz S²⁴^ORCID,Collier Cameron A²⁵^ORCID,Csizmadia Sz²³^ORCID,Davies M B²⁶^ORCID,Deleuil M⁶^ORCID,Delrez L²⁷²⁸^ORCID,Demangeon O D S³¹⁸^ORCID,Demory B-O²⁰^ORCID,Dransfield G¹^ORCID,Ehrenreich D⁵^ORCID,Erikson A²³,Fortier A¹⁰²⁰^ORCID,Fossati L¹⁹^ORCID,Fridlund M⁹²⁹^ORCID,Gandolfi D³⁰^ORCID,Gillon M²⁷^ORCID,Güdel M³¹,Hasiba J¹⁹,Hébrard G³²,Heng K⁷²⁰^ORCID,Isaak K G³³^ORCID,Kiss L L³⁴³⁵,Kopp E²³,Kunovac V¹³⁶^ORCID,Laskar J³⁷^ORCID,Lecavelier des Etangs A³²^ORCID,Lendl M⁵^ORCID,Lovis C⁵^ORCID,Magrin D²¹^ORCID,McCormac J⁷,Miller N J²^ORCID,Nascimbeni V²¹^ORCID,Ottensamer R³¹^ORCID,Pagano I³⁸^ORCID,Pallé E¹¹^ORCID,Pepe F A⁵,Peter G³⁹^ORCID,Piotto G²¹⁴⁰^ORCID,Pollacco D⁷,Queloz D⁴¹⁴²^ORCID,Ragazzoni R²¹⁴⁰^ORCID,Rando N¹⁵,Rauer H²³⁴³⁴⁴^ORCID,Ribas I¹³¹⁴^ORCID,Lalitha S¹^ORCID,Santerne A⁶^ORCID,Santos N C³¹⁸^ORCID,Scandariato G³⁸^ORCID,Ségransan D⁵^ORCID,Simon A E¹⁰^ORCID,Smith A M S²³^ORCID,Steller M¹⁹^ORCID,Szabó Gy M⁴⁴⁴⁵,Thomas N¹⁰,Udry S⁵^ORCID,Van Grootel V²⁸^ORCID,Walton N A⁴⁶^ORCID

Affiliation:

1. School of Physics & Astronomy, University of Birmingham , Edgbaston, Birmimgham B15 2TT, UK

2. Astrophysics Group, Keele University , Staffordshire ST5 5BG, UK

3. Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP , Rua das Estrelas, P-4150-762 Porto, Portugal

4. Department of Astronomy, Stockholm University , AlbaNova University Center, SE-10691 Stockholm, Sweden

5. Observatoire Astronomique de l’Université de Genève , Chemin Pegasi 51, CH-1290 Versoix, Switzerland

6. Aix Marseille University, CNRS, CNES, LAM , 38 rue Frédéric Joliot-Curie, F-13388 Marseille, France

7. Department of Physics, University of Warwick , Gibbet Hill Road, Coventry CV4 7AL, UK

8. Department of Astronomy, The Ohio State University , 4055 McPherson Laboratory, Columbus, OH 43210, USA

9. Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory , SE-43992 Onsala, Sweden

10. Physikalisches Institut, University of Bern , Gesellsschaftstrasse 6, CH-3012 Bern, Switzerland

11. Instituto de Astrofisica de Canarias , E-38200 La Laguna, Tenerife, Spain

12. Departamento de Astrofisica, Universidad de La Laguna , E-38206 La Laguna, Tenerife, Spain

13. Institut de Ciencies de l’Espai (ICE, CSIC), Campus UAB , Can Magrans s/n, E-08193 Bellaterra, Spain

14. Institut d’Estudis Espacials de Catalunya (IEEC) , E-08034 Barcelona, Spain

15. ESTEC, European Space Agency , NL-2201AZ Noordwijk, the Netherlands

16. Admatis , 5. Kandó Kálmán Street, 3534 Miskolc, Hungary

17. Departamento de Astrofisica, Centro de Astrobiologia (CSIC-INTA), ESAC Campus , E-28692 Villanueva de la Cañada (Madrid), Spain

18. Departamento de Fisica e Astronomia, Faculdade de Ciencias, Universidade do Porto , Rua do Campo Alegre, P-4169-007 Porto, Portugal

19. Space Research Institute, Austrian Academy of Sciences , Schmiedlstrasse 6, A-8042 Graz, Austria

20. Center for Space and Habitability , Gesellsschaftstrasse 6, CH-3012 Bern, Switzerland

21. INAF, Osservatorio Astronomico di Padova , Vicolo dell’Osservatorio 5, I-35122 Padova, Italy

22. Université Grenoble Alpes, CNRS, IPAG , F-38000 Grenoble, France

23. Institute of Planetary Research, German Aerospace Center (DLR) , Rutherfordstrasse 2, D-12489 Berlin, Germany

24. Université de Paris, Institut de physique du globe de Paris, CNRS , F-75005 Paris, France

25. Centre for Exoplanet Science, SUPA School of Physics and Astronomy, University of St Andrews , North Haugh, St Andrews KY16 9SS, UK

26. Centre for Mathematical Sciences, Lund University , Box 118, SE-221 00 Lund, Sweden

27. Astrobiology Research Unit, Université de Liège , Allée du 6 Août 19C, B-4000 Liège, Belgium

28. Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège , Allée du 6 Août 19C, B-4000 Liège, Belgium

29. Leiden Observatory, University of Leiden , PO Box 9513, NL-2300 RA Leiden, the Netherlands

30. Dipartimento di Fisica, Universita degli Studi di Torino , via Pietro Giuria 1, I-10125 Torino, Italy

31. University of Vienna, Department of Astrophysics , Türkenschanzstrasse 17, A-1180 Vienna, Austria

32. Institut d’astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie , 98bis blvd. Arago, F-75014 Paris, France

33. 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

34. Konkoly Observatory, Research Centre for Astronomy and Earth Sciences , 1121 Budapest, Konkoly Thege Miklós út 15-17, Hungary

35. ELTE Eötvös Loránd University, Institute of Physics , Pázmány Péter sétány 1/A, 1117, Hungary

36. Lowell Observatory , 1400 W. Mars Hill Rd., Flagstaff, AZ 86001, USA

37. IMCCE, UMR8028 CNRS, Observatoire de Paris, PSL Univ., Sorbonne Univ. , 77 av. Denfert-Rochereau, F-75014 Paris, France

38. INAF, Osservatorio Astrofisico di Catania , Via S. Sofia 78, I-95123 Catania, Italy

39. Institute of Optical Sensor Systems, German Aerospace Center (DLR) , Rutherfordstrasse 2, D-12489 Berlin, Germany

40. Dipartimento di Fisica e Astronomia ‘Galileo Galilei’, Universita degli Studi di Padova , Vicolo dell’Osservatorio 3, I-35122 Padova, Italy

41. ETH Zurich, Department of Physics , Wolfgang-Pauli-Strasse 2, CH-8093 Zurich, Switzerland

42. Cavendish Laboratory , JJ Thomson Avenue, Cambridge CB3 0HE, UK

43. Institut für Geologische Wissenschaften, Freie Universität Berlin , D-12249 Berlin, Germany

44. ELTE Eötvös Loránd University, Gothard Astrophysical Observatory , 9700 Szombathely, Szent Imre h. u. 112, Hungary

45. MTA-ELTE Exoplanet Research Group , 9700 Szombathely, Szent Imre h. u. 112, Hungary

46. Institute of Astronomy, University of Cambridge , Madingley Road, Cambridge CB3 0HA, UK

Abstract

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.

Funder

ESO

European Research Council

STFC

FCT

CNES

Swiss National Fund

Spanish Ministry of Science and Innovation

European Regional Development Fund

INTA

CSIC

Generalitat de Catalunya