Discovery of a young low-mass brown dwarf transiting a fast-rotating F-type star by the Galactic Plane eXoplanet (GPX) survey-Reference-Cited by-同舟云学术

Discovery of a young low-mass brown dwarf transiting a fast-rotating F-type star by the Galactic Plane eXoplanet (GPX) survey

Published:2021-05-31 Issue:4 Volume:505 Page:4956-4967
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Benni P¹^ORCID,Burdanov A Y²³^ORCID,Krushinsky V V⁴^ORCID,Bonfanti A⁵⁶,Hébrard G⁷⁸,Almenara J M⁹^ORCID,Dalal S⁷,Demangeon O D S¹⁰,Tsantaki M¹¹^ORCID,Pepper J¹²,Stassun K G¹³^ORCID,Vanderburg A¹⁴,Belinski A¹⁵,Kashaev F¹⁶,Barkaoui K¹⁷¹⁸,Kim T¹⁹,Kang W¹⁹,Antonyuk K²⁰,Dyachenko V V²¹,Rastegaev D A²¹,Beskakotov A²¹²²,Mitrofanova A A²¹,Pozuelos F J⁶¹⁷,Kuznetsov E D²³,Popov A²³^ORCID,Kiefer F⁷,Wilson P A²⁴²⁵,Ricker G²⁶,Vanderspek R²⁶,Latham D W²⁷,Seager S²²⁶²⁸,Jenkins J M²⁹,Sokov E²²³⁰^ORCID,Sokova I²²³⁰,Marchini A³¹^ORCID,Papini R³²,Salvaggio F³²,Banfi M³²,Baştürk Ö³³^ORCID,Torun Ş³³,Yalçınkaya S³³,Ivanov K³⁴,Valyavin G²⁰²¹²²,Jehin E⁶,Gillon M¹⁷,Pakštienė E³⁵,Hentunen V-P³⁶,Shadick S³⁷,Bretton M³⁸,Wünsche A³⁸,Garlitz J³⁹,Jongen Y⁴⁰,Molina D⁴¹,Girardin E⁴²,Grau Horta F⁴³^ORCID,Naves R⁴⁴,Benkhaldoun Z¹⁸^ORCID,Joner M D⁴⁵,Spencer M⁴⁵,Bieryla A²⁷,Stevens D J⁴⁶⁴⁷^ORCID,Jensen E L N⁴⁸,Collins K A²⁷,Charbonneau D²⁷,Quintana E V⁴⁹,Mullally S E⁵⁰,Henze C E²⁹

Affiliation:

1. Acton Sky Portal (Private Observatory), Acton, MA 01720, USA

2. Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA

3. Instituto de Astrofísica de Canarias, Vía Láctea s/n, E-38205 La Laguna, Tenerife, Spain

4. Laboratory of Astrochemical Research, Ural Federal University, Mira Street 19, 620002 Yekaterinburg, Russia

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

6. Space Sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Allée du 6 Août 17, B-4000 Liège, Belgium

7. Institut d’Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, F-75014 Paris, France

8. Observatoire de Haute-Provence, CNRS, Université d’Aix-Marseille, F-04870 Saint-Michel-l’Observatoire, France

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

10. Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, P-4150-762 Porto, Portugal

11. INAF – Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Firenze, Italy

12. Department of Physics, Lehigh University, 16 Memorial Drive East, Bethlehem, PA 18015, USA

13. Department of Physics and Astronomy, Vanderbilt University, 6301 Stevenson Center Ln., Nashville, TN 37235, USA

14. Department of Astronomy, The University of Texas at Austin, Austin, TX 78712, USA

15. Sternberg Astronomical Institute, M.V. Lomonosov Moscow State University, 13 Universitetskij pr., 119234 Moscow, Russia

16. Faculty of Physics, M.V. Lomonosov Moscow State University, Leninskie Gory 1, 119991 Moscow, Russia

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

18. Oukaimeden Observatory, High Energy Physics and Astrophysics Laboratory, Cadi Ayyad University, 40000 Marrakech, Morocco

19. National Youth Space Center, Goheung, Jeollanam-do 59567, South Korea

20. Federal State Budget Scientific Institution Crimean Astrophysical Observatory of RAS, Nauchny, 298409 Crimea, Russia

21. Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnij Arkhyz 369167, Russia

22. Faculty of Mathematics & Mechanics, Saint Petersburg State University, Universitetskij pr. 28, Petrodvorets, St. Petersburg 198504, Russia

23. Ural Federal University, Mira Street, 19, 620002 Yekaterinburg, Russia

24. Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK

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

26. Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA

27. Center for Astrophysics | Harvard & Smithsonian, 60 Garden St., Cambridge, MA 02138, USA

28. Department of Aeronautical and Astronautical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA

29. NASA Ames Research Center, Moffett Field, CA 94035, USA

30. Central Astronomical Observatory at Pulkovo of Russian Academy of Sciences, Pulkovskoje shosse d. 65, St. Petersburg 196140, Russia

31. Astronomical Observatory - DSFTA, University of Siena, Via Roma 56, I-53100 Siena, Italy

32. Wild Boar Remote Observatory, I-50026 San Casciano in Val di Pesa (FI), Italy

33. Faculty of Science, Department of Astronomy and Space Science, Ankara University, TR-06100 Tandogan, Ankara, Turkey

34. Irkutsk State University, K. Marx str. 1, Irkutsk 664003, Russia

35. Institute of Theoretical Physics and Astronomy, Vilnius University, Saulėtekio al. 3, Vilnius, LT-10257, Lithuania

36. Taurus Hill Observatory, Härkämäentie 88, FI-79480 Varkaus, Finland

37. Physics and Engineering Physics Department, University of Saskatchewan, Saskatoon, SK S7N 5E2, Canada

38. Baronnies Provençales Observatory, Hautes Alpes - Parc Naturel Régional des Baronnies Provençales, E-05150 Moydans, France

39. GJP private observatory, Elgin, OR 97827, USA

40. Rasteau Observatory, F-84110 Rasteau, France

41. Anunaki Observatory, 28410 Manzanares El Real, Spain

42. Grand-Pra private observatory, 1984 Les Hauderes, Switzerland

43. Observatory Ca l’Ou, E-08282 Sant Martí Sesgueioles, Spain

44. Observatori Montcabrer, c/Jaume Balmes n 24 Cabrils E-08348, Spain

45. Department of Physics and Astronomy, Brigham Young University, Provo, UT 84602 USA

46. Center for Exoplanets and Habitable Worlds, The Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USA

47. Department of Astronomy & Astrophysics, The Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USA

48. Department of Physics & Astronomy, Swarthmore College, 500 College Ave., Swarthmore, PA 19081, USA

49. NASA Goddard Space Flight Center, 8800 Greenbelt Rd, Greenbelt, MD 20771, USA

50. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA

Abstract

ABSTRACT We announce the discovery of GPX-1 b, a transiting brown dwarf with a mass of 19.7 ± 1.6 MJup and a radius of 1.47 ± 0.10 RJup, the first substellar object discovered by the Galactic Plane eXoplanet (GPX) survey. The brown dwarf transits a moderately bright (V = 12.3 mag) fast-rotating F-type star with a projected rotational velocity $v\sin {\, i_*}=40\pm 10$ km s−1. We use the isochrone placement algorithm to characterize the host star, which has effective temperature 7000 ± 200 K, mass 1.68 ± 0.10 $\mathrm{\it M}_\odot$, radius 1.56 ± 0.10 $\mathrm{\it R}_\odot$, and approximate age $0.27_{-0.15}^{+0.09}$ Gyr. GPX-1 b has an orbital period of ∼1.75 d and a transit depth of 0.90 ± 0.03 per cent. We describe the GPX transit detection observations, subsequent photometric and speckle-interferometric follow-up observations, and SOPHIE spectroscopic measurements, which allowed us to establish the presence of a substellar object around the host star. GPX-1 was observed at 30-min integrations by TESS in Sector 18, but the data are affected by blending with a 3.4 mag brighter star 42 arcsec away. GPX-1 b is one of about two dozen transiting brown dwarfs known to date, with a mass close to the theoretical brown dwarf/gas giant planet mass transition boundary. Since GPX-1 is a moderately bright and fast-rotating star, it can be followed-up by the means of the Doppler tomography.

Funder

Russian Science Foundation

Ministry of Science and Higher Education of the Russian Federation

Federation Wallonia-Brussels

International Balzan Prize Foundation

Belgian National Fund for Scientific Research

Horizon 2020 Framework Programme

MSU

Fundação para a Ciência e a Tecnologia

Publisher

Oxford University Press (OUP)

Subject