Greening of the brown-dwarf desert EPIC 212036875b: a 51 M-J object in a 5-day orbit around an F7V star

↓ Direkt till sidans innehåll
↓ Direkt till sidans sekundära innehåll (sidomenyn)

Tyck till om SwePub Sök här!

Search: WFRF:(Narita S) > Dai Fei > Lund University > Greening of the bro...

1 of 1
Previous record
Next record
To hitlist

Greening of the brown-dwarf desert EPIC 212036875b: a 51 M-J object in a 5-day orbit around an F7V star

Persson, Carina, 1964 (author): Chalmers tekniska högskola,Chalmers University of Technology

Csizmadia, Szilard (author): Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)

Mustill, Alexander J. (author): Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science

Fridlund, Malcolm, 1952 (author): Chalmers tekniska högskola,Chalmers University of Technology,Universiteit Leiden (UL),Leiden University (UL)

Hatzes, Artie P. (author): Thüringer Landessternwarte Tautenburg

Nowak, Grzegorz (author): Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias

Georgieva, Iskra, 1987 (author): Chalmers tekniska högskola,Chalmers University of Technology

Gandolfi, Davide (author): Universita degli Studi di Torino,University of Turin

Davies, Melvyn B. (author): Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science

Livingston, John H. (author): University of Tokyo, Japan

Palle, Enric (author): Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias

Montanes Rodriguez, Pilar (author): Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias

Endl, Michael (author): The University of Texas at Austin, USA

Hirano, Teruyuki (author): Tokyo Institute of Technology

Prieto-Arranz, Jorge (author): Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna

Korth, Judith (author): Universität zu Köln,University of Cologne

Grziwa, Sascha (author): Universität zu Köln,University of Cologne

Esposito, Massimiliano (author): Thüringer Landessternwarte Tautenburg

Albrecht, Simon (author): Århus Universitet,Aarhus University

Johnson, Marshall C. (author): Ohio State University

Barragan, Oscar (author): Universita degli Studi di Torino,University of Turin,University Of Oxford

Parviainen, Hannu (author): Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna

Van Eylen, Vincent (author): Princeton University

Alonso Sobrino, Roi (author): Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna

Beck, Paul G. (author): Karl-Franzens-Universität Graz,Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias

Cabrera, Juan (author): Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)

Carleo, Ilaria (author): Wesleyan University

Cochran, William D. (author): The University of Texas at Austin, USA

Dai, Fei (author): Massachusetts Institute of Technology (MIT),Princeton University

Deeg, Hans J. (author): Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna

de Leon, Jerome P. (author): University of Tokyo, Japan

Eigmueller, Philipp (author): Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)

Erikson, Anders (author): Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)

Fukui, Akai (author): National Institutes of Natural Sciences (NINS)

Gonzalez-Cuesta, Lucia (author): Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias

Guenther, Eike W. (author): Thüringer Landessternwarte Tautenburg

Hidalgo, Diego (author): Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna

Hjorth, Maria (author): Århus Universitet,Aarhus University

Kabath, Petr (author): Czech Academy of Sciences

Knudstrup, Emil (author): Århus Universitet,Aarhus University

Kusakabe, Nobuhiko (author): National Institutes of Natural Sciences (NINS)

Lam, Kristine W. F. (author): Technische Universität Berlin

Lund, Mikkel N. (author): Århus Universitet,Aarhus University

Luque, Rafael (author): Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias

Mathur, Savita (author): Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias

Murgas, Felipe (author): Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias

Narita, Norio (author): University of Tokyo, Japan,National Institutes of Natural Sciences (NINS),Japan Science and Technology Agency (JST),Instituto de Astrofísica de Canarias

Nespral, David (author): Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna

Niraula, Prajwal (author): Massachusetts Institute of Technology (MIT)

Olofsson, Henrik, 1972 (author): Chalmers tekniska högskola,Chalmers University of Technology

Paetzold, Martin (author): Universität zu Köln,University of Cologne

Rauer, Heike (author): Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),Technische Universität Berlin

Redfield, Seth (author): Wesleyan University

Ribas, Ignasi (author): Institut d'Estudis Espacials de Catalunya (IEEC),Institute of Space Studies of Catalonia (IEEC),Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council

Skarka, Marek (author): Czech Academy of Sciences,Masarykova Univerzita,Masaryk University

Smith, Alexis M. S. (author): Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)

Subjak, Jan (author): Czech Academy of Sciences,Univerzita Karlova,Charles University

Tamura, Motohide (author): University of Tokyo, Japan,National Institutes of Natural Sciences (NINS)

show less...

(creator_code:org_t)

2019-08-08
2019
English.
In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 628

Related links:: https://research.cha... (primary) (free); show more...; https://www.aanda.or...; https://arxiv.org/ab... (free); http://dx.doi.org/10... (free); https://research.cha...; https://research.cha...; https://research.cha...; https://doi.org/10.1...; https://lup.lub.lu.s...; show less...

Journal article (peer-reviewed)

Abstract Subject headings

Context. Although more than 2000 brown dwarfs have been detected to date, mainly from direct imaging, their characterisation is difficult due to their faintness and model-dependent results. In the case of transiting brown dwarfs, however, it is possible to make direct high-precision observations. Aims. Our aim is to investigate the nature and formation of brown dwarfs by adding a new well-characterised object, in terms of its mass, radius and bulk density, to the currently small sample of less than 20 transiting brown dwarfs. Methods. One brown dwarf candidate was found by the KESPRINT consortium when searching for exoplanets in the K2 space mission Campaign 16 field. We combined the K2 photometric data with a series of multicolour photometric observations, imaging, and radial velocity measurements to rule out false positive scenarios and to determine the fundamental properties of the system. Results. We report the discovery and characterisation of a transiting brown dwarf in a 5.17-day eccentric orbit around the slightly evolved F7V star EPIC 212036875. We find a stellar mass of 1.15 +/- 0.08 M-circle dot, a stellar radius of 1.41 +/- 0.05 R-circle dot, and an age of 5.1 +/- 0.9 Gyr. The mass and radius of the companion brown dwarf are 51 +/- 2 M-J and 0.83 +/- 0.03 R-J, respectively, corresponding to a mean density of 108(-13)(+15) g cm(-3). Conclusions. EPIC 212036875 b is a rare object that resides in the brown-dwarf desert. In the mass-density diagram for planets, brown dwarfs, and stars, we find that all giant planets and brown dwarfs follow the same trend from similar to 0.3 M-J to the turn-over to hydrogen burning stars at similar to 73 M-J. EPIC 212036875 b falls close to the theoretical model for mature H/He dominated objects in this diagram as determined by interior structure models. We argue that EPIC 212036875 b formed via gravitational disc instabilities in the outer part of the disc, followed by a quick migration. Orbital tidal circularisation may have started early in its history for a brief period when the brown dwarf's radius was larger. The lack of spin-orbit synchronisation points to a weak stellar dissipation parameter (Q(star)' greater than or similar to 10(8)), which implies a circularisation timescale of greater than or similar to 23 Gyr, or suggests an interaction between the magnetic and tidal forces of the star and the brown dwarf.

Subject headings

NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Keyword

stars: individual: EPIC 212036875
techniques: photometric
stars: fundamental parameters
planetary systems
techniques: radial velocities
planetary systems
stars: fundamental parameters
stars: individual: EPIC 212036875
techniques: photometric
techniques: radial velocities
Astrophysics - Earth and Planetary Astrophysics

Publication and Content Type

art (subject category)
ref (subject category)

Find in a library

Astronomy and Astrophysics (Search for host publication in LIBRIS)

To the university's database

1 of 1
Previous record
Next record
To hitlist

Find more in SwePub

By the author/editor: Persson, Carina, ...; Csizmadia, Szila ...; Mustill, Alexand ...; Fridlund, Malcol ...; Hatzes, Artie P.; Nowak, Grzegorz; show more...; Georgieva, Iskra ...; Gandolfi, Davide; Davies, Melvyn B ...; Livingston, John ...; Palle, Enric; Montanes Rodrigu ...; Endl, Michael; Hirano, Teruyuki; Prieto-Arranz, J ...; Korth, Judith; Grziwa, Sascha; Esposito, Massim ...; Albrecht, Simon; Johnson, Marshal ...; Barragan, Oscar; Parviainen, Hann ...; Van Eylen, Vince ...; Alonso Sobrino, ...; Beck, Paul G.; Cabrera, Juan; Carleo, Ilaria; Cochran, William ...; Dai, Fei; Deeg, Hans J.; de Leon, Jerome ...; Eigmueller, Phil ...; Erikson, Anders; Fukui, Akai; Gonzalez-Cuesta, ...; Guenther, Eike W ...; Hidalgo, Diego; Hjorth, Maria; Kabath, Petr; Knudstrup, Emil; Kusakabe, Nobuhi ...; Lam, Kristine W. ...; Lund, Mikkel N.; Luque, Rafael; Mathur, Savita; Murgas, Felipe; Narita, Norio; Nespral, David; Niraula, Prajwal; Olofsson, Henrik ...; Paetzold, Martin; Rauer, Heike; Redfield, Seth; Ribas, Ignasi; Skarka, Marek; Smith, Alexis M. ...; Subjak, Jan; Tamura, Motohide; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Astronomy Astrop ...

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Other Physics To ...

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Condensed Matter ...

Articles in the publication: Astronomy and As ...

By the university: Chalmers University of Technology; Lund University

Search outside SwePub

Extend your search to:: Google; Google Book Search; Google Scholar

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

LIBRIS.kb.se