Reference : Discovery of a young low-mass brown dwarf transiting a fast-rotating F-type star by t...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/261800
Discovery of a young low-mass brown dwarf transiting a fast-rotating F-type star by the Galactic Plane eXoplanet (GPX) survey
English
Benni, P. [Acton Sky Portal (Private Observatory), Acton, MA 01720, USA]
Burdanov, A. Y. [Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA; Instituto de Astrofísica de Canarias, Vía Láctea s/n, E-38205 La Laguna, Tenerife, Spain]
Krushinsky, V. V. [Laboratory of Astrochemical Research, Ural Federal University, Mira Street 19, 620002 Yekaterinburg, Russia]
Bonfanti, A. [Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8042 Graz, Austria; Space Sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Allée du 6 Août 17, B-4000 Liège, Belgium]
Hébrard, G. [Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, F-75014 Paris, France; Observatoire de Haute-Provence, CNRS, Université d'Aix-Marseille, F-04870 Saint-Michel-l'Observatoire, France]
Almenara, J. M. [Université Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France]
Dalal, S. [Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, F-75014 Paris, France]
Demangeon, O. D. S. [Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, P-4150-762 Porto, Portugal]
Tsantaki, M. [INAF - Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Firenze, Italy]
Pepper, J. [Department of Physics, Lehigh University, 16 Memorial Drive East, Bethlehem, PA 18015, USA]
Stassun, K. G. [Department of Physics and Astronomy, Vanderbilt University, 6301 Stevenson Center Ln., Nashville, TN 37235, USA]
Vanderburg, A. [Department of Astronomy, The University of Texas at Austin, Austin, TX 78712, USA]
Belinski, A. [Sternberg Astronomical Institute, M.V. Lomonosov Moscow State University, 13 Universitetskij pr., 119234 Moscow, Russia]
Kashaev, F. [Faculty of Physics, M.V. Lomonosov Moscow State University, Leninskie Gory 1, 119991 Moscow, Russia]
Barkaoui, Khalid [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Kim, T. [National Youth Space Center, Goheung, Jeollanam-do 59567, South Korea]
Kang, W. [National Youth Space Center, Goheung, Jeollanam-do 59567, South Korea]
Antonyuk, K. [Federal State Budget Scientific Institution Crimean Astrophysical Observatory of RAS, Nauchny, 298409 Crimea, Russia]
Dyachenko, V. V. [Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnij Arkhyz 369167, Russia]
Rastegaev, D. A. [Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnij Arkhyz 369167, Russia]
Beskakotov, A. [Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnij Arkhyz 369167, Russia; Faculty of Mathematics & Mechanics, Saint Petersburg State University, Universitetskij pr. 28, Petrodvorets, St. Petersburg 198504, Russia]
Mitrofanova, A. A. [Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnij Arkhyz 369167, Russia]
Pozuelos, F. J. [Space Sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Allée du 6 Août 17, B-4000 Liège, Belgium; Astrobiology Research Unit, Université de Liège, Allée du 6 Août 19C, B-4000 Liège, Belgium]
Kuznetsov, E. D. [Ural Federal University, Mira Street, 19, 620002 Yekaterinburg, Russia]
Popov, A. [Ural Federal University, Mira Street, 19, 620002 Yekaterinburg, Russia]
Kiefer, F. [Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, F-75014 Paris, France]
Wilson, P. A. [Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK; Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK]
Ricker, G. [Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA]
Vanderspek, R. [Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA]
Latham, D. W. [Center for Astrophysics | Harvard & Smithsonian, 60 Garden St., Cambridge, MA 02138, USA]
Seager, S. [Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA; Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Aeronautical and Astronautical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA]
Jenkins, J. M. [NASA Ames Research Center, Moffett Field, CA 94035, USA]
Sokov, E. [Faculty of Mathematics & Mechanics, Saint Petersburg State University, Universitetskij pr. 28, Petrodvorets, St. Petersburg 198504, Russia; Central Astronomical Observatory at Pulkovo of Russian Academy of Sciences, Pulkovskoje shosse d. 65, St. Petersburg 196140, Russia]
Sokova, I. [Faculty of Mathematics & Mechanics, Saint Petersburg State University, Universitetskij pr. 28, Petrodvorets, St. Petersburg 198504, Russia; Central Astronomical Observatory at Pulkovo of Russian Academy of Sciences, Pulkovskoje shosse d. 65, St. Petersburg 196140, Russia]
Marchini, A. [Astronomical Observatory - DSFTA, University of Siena, Via Roma 56, I-53100 Siena, Italy]
Papini, R. [Wild Boar Remote Observatory, I-50026 San Casciano in Val di Pesa (FI), Italy]
Salvaggio, F. [Wild Boar Remote Observatory, I-50026 San Casciano in Val di Pesa (FI), Italy]
Banfi, M. [Wild Boar Remote Observatory, I-50026 San Casciano in Val di Pesa (FI), Italy]
Baştürk, Ö. [Faculty of Science, Department of Astronomy and Space Science, Ankara University, TR-06100 Tandogan, Ankara, Turkey]
Torun, Ş. [Faculty of Science, Department of Astronomy and Space Science, Ankara University, TR-06100 Tandogan, Ankara, Turkey]
Yalçınkaya, S. [Faculty of Science, Department of Astronomy and Space Science, Ankara University, TR-06100 Tandogan, Ankara, Turkey]
Ivanov, K. [Irkutsk State University, K. Marx str. 1, Irkutsk 664003, Russia]
Valyavin, G. [Federal State Budget Scientific Institution Crimean Astrophysical Observatory of RAS, Nauchny, 298409 Crimea, Russia; Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnij Arkhyz 369167, Russia; Faculty of Mathematics & Mechanics, Saint Petersburg State University, Universitetskij pr. 28, Petrodvorets, St. Petersburg 198504, Russia]
Jehin, Emmanuel mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Gillon, Michaël mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Pakštienė, E. [Institute of Theoretical Physics and Astronomy, Vilnius University, Saulėtekio al. 3, Vilnius, LT-10257, Lithuania]
Hentunen, V.-P. [Taurus Hill Observatory, Härkämäentie 88, FI-79480 Varkaus, Finland]
Shadick, S. [Physics and Engineering Physics Department, University of Saskatchewan, Saskatoon, SK S7N 5E2, Canada]
Bretton, M. [Baronnies Provençales Observatory, Hautes Alpes - Parc Naturel Régional des Baronnies Provençales, E-05150 Moydans, France]
Wünsche, A. [Baronnies Provençales Observatory, Hautes Alpes - Parc Naturel Régional des Baronnies Provençales, E-05150 Moydans, France]
Garlitz, J. [GJP private observatory, Elgin, OR 97827, USA]
Jongen, Y. [Rasteau Observatory, F-84110 Rasteau, France]
Molina, D. [Anunaki Observatory, 28410 Manzanares El Real, Spain]
Girardin, E. [Grand-Pra private observatory, 1984 Les Hauderes, Switzerland]
Grau Horta, F. [Observatory Ca l'Ou, E-08282 Sant Martí Sesgueioles, Spain]
Naves, R. [Observatori Montcabrer, c/Jaume Balmes n 24 Cabrils E-08348, Spain]
Benkhaldoun, Z. [Oukaimeden Observatory, High Energy Physics and Astrophysics Laboratory, Cadi Ayyad University, 40000 Marrakech, Morocco]
Joner, M. D. [Department of Physics and Astronomy, Brigham Young University, Provo, UT 84602 USA]
Spencer, M. [Department of Physics and Astronomy, Brigham Young University, Provo, UT 84602 USA]
Bieryla, A. [Center for Astrophysics | Harvard & Smithsonian, 60 Garden St., Cambridge, MA 02138, USA]
Stevens, D. J. [Center for Exoplanets and Habitable Worlds, The Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USA; Department of Astronomy & Astrophysics, The Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USA]
Jensen, E. L. N. [Department of Physics & Astronomy, Swarthmore College, 500 College Ave., Swarthmore, PA 19081, USA]
Collins, K. A. [Center for Astrophysics | Harvard & Smithsonian, 60 Garden St., Cambridge, MA 02138, USA]
Charbonneau, D. [Center for Astrophysics | Harvard & Smithsonian, 60 Garden St., Cambridge, MA 02138, USA]
Quintana, E. V. [NASA Goddard Space Flight Center, 8800 Greenbelt Rd, Greenbelt, MD 20771, USA]
Mullally, S. E. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA]
Henze, C. E. [NASA Ames Research Center, Moffett Field, CA 94035, USA)]
1-Aug-2021
Monthly Notices of the Royal Astronomical Society
Oxford University Press
505
4956
Yes
International
0035-8711
1365-2966
Oxford
United Kingdom
[en] stars: brown dwarfs ; stars: individual: GPX-1 ; stars: rotation ; surveys: Astronomical Data bases ; Galaxy: disc ; Astrophysics - Solar and Stellar Astrophysics ; Astrophysics - Earth and Planetary Astrophysics
[en] 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.
Professionals
http://hdl.handle.net/2268/261800
10.1093/mnras/stab1567
https://ui.adsabs.harvard.edu/abs/2021MNRAS.505.4956B

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