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NGTS J214358.5-380102 - NGTS discovery of the most eccentric known eclipsing M-dwarf binary system
Acton, Jack S. and Goad, Michael R. and Raynard, Liam and Casewell, Sarah L. and Jackman, James A.G. and Alexander, Richard D. and Anderson, David R. and Bayliss, Daniel and Bryant, Edward M. and Burleigh, Matthew R. and Belardi, Claudia and Cooke, Benjamin F. and Eigmüller, Philipp and Gill, Samuel and Jenkins, James S. and Lendl, Monika and Louden, Tom and McCormac, James and Moyano, Maximiliano and Nielsen, Louise D. and Tilbrook, Rosanna H. and Udry, Stéphane and Watson, Christopher A. and West, Richard G. and Wheatley, Peter J. and Vines, Jose I.
(2020)
NGTS J214358.5-380102 - NGTS discovery of the most eccentric known eclipsing M-dwarf binary system.
Monthly Notices of the Royal Astronomical Society, 494 (3), pp. 3950-3961.
Oxford University Press.
doi: 10.1093/mnras/staa928.
ISSN 0035-8711.
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Official URL: https://academic.oup.com/mnras/article/494/3/3950/5817847 AbstractWe present the discovery of NGTS J214358.5-380102, an eccentric M-dwarf binary discovered by the Next-Generation Transit Survey (NGTS). The system period of 7.618 d is greater than many known eclipsing M-dwarf binary systems. Its orbital eccentricity of 0.323+0.0014−0.0037 is large relative to the period and semimajor axis of the binary. Global modelling of photometry and radial velocities indicates stellar masses of MA = 0.426+0.0056−0.0049 M☉, MB = 0.455+0.0058−0.0052 M☉ and stellar radii RA = 0.461+0.038−0.025 R☉, RB = 0.411+0.027−0.039 R☉, respectively. Comparisons with stellar models for low-mass stars show that one star is consistent with model predictions whereas the other is substantially oversized. Spectral analysis of the system suggests a primary of spectral type M3V, consistent with both modelled masses and radii, and with spectral energy distribution fitting of NGTS photometry. As the most eccentric eclipsing M-dwarf binary known, NGTS J214358.5-380102 provides an interesting insight into the strength of tidal effects in the circularization of stellar orbits. | Item URL in elib: | https://elib.dlr.de/136672/ |
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| Document Type: | Article |
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| Title: | NGTS J214358.5-380102 - NGTS discovery of the most eccentric known eclipsing M-dwarf binary system |
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| Authors: | | Authors | Institution or Email of Authors | Author's ORCID iD | ORCID Put Code |
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| Acton, Jack S. | School of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK | UNSPECIFIED | UNSPECIFIED | | Goad, Michael R. | School of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK | UNSPECIFIED | UNSPECIFIED | | Raynard, Liam | School of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK | UNSPECIFIED | UNSPECIFIED | | Casewell, Sarah L. | School of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK | UNSPECIFIED | UNSPECIFIED | | Jackman, James A.G. | Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK | UNSPECIFIED | UNSPECIFIED | | Alexander, Richard D. | School of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK | UNSPECIFIED | UNSPECIFIED | | Anderson, David R. | 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 | | Bayliss, Daniel | Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK | UNSPECIFIED | UNSPECIFIED | | Bryant, Edward M. | 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 | | Burleigh, Matthew R. | School of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK | UNSPECIFIED | UNSPECIFIED | | Belardi, Claudia | School of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK | UNSPECIFIED | UNSPECIFIED | | Cooke, Benjamin F. | 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 | | Eigmüller, Philipp | UNSPECIFIED | https://orcid.org/0000-0003-4096-0594 | UNSPECIFIED | | Gill, Samuel | 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 | | Jenkins, James S. | Departamento de Astronomía, Universidad de Chile, Camino el Observatorio 1515, Las Condes, Casilla 36-D, 7591245, Santiago, Chile Santiago, Chile; Centro de Astrofísica y Tecnologías Afines (CATA), Casilla 36-D, 7591245, Santiago, Chile | UNSPECIFIED | UNSPECIFIED | | Lendl, Monika | Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, CH-1290 Sauverny, Switzerland; Space Research Institute, Austrian Academy of Sciences, Schmiedlstr 6, A-8042 Graz, Austria | UNSPECIFIED | UNSPECIFIED | | Louden, Tom | 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 | | McCormac, James | 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 | | Moyano, Maximiliano | Instituto de Astronomía, Universidad Católica del Norte, Angamos 0610, 1270709 Antofagasta, Chile | UNSPECIFIED | UNSPECIFIED | | Nielsen, Louise D. | Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, CH-1290 Sauverny, Switzerland | UNSPECIFIED | UNSPECIFIED | | Tilbrook, Rosanna H. | School of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK | UNSPECIFIED | UNSPECIFIED | | Udry, Stéphane | Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, CH-1290 Sauverny, Switzerland | UNSPECIFIED | UNSPECIFIED | | Watson, Christopher A. | Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, BT7 1NN Belfast, UK | UNSPECIFIED | UNSPECIFIED | | West, Richard G. | 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 | | Wheatley, Peter J. | 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 | | Vines, Jose I. | Departamento de Astronomía, Universidad de Chile, Casilla 36-D, 7591245, Santiago, Chile | UNSPECIFIED | UNSPECIFIED |
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| Date: | 2020 |
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| Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society |
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| Refereed publication: | Yes |
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| Open Access: | Yes |
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| Gold Open Access: | No |
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| In SCOPUS: | Yes |
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| In ISI Web of Science: | Yes |
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| Volume: | 494 |
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| DOI: | 10.1093/mnras/staa928 |
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| Page Range: | pp. 3950-3961 |
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| Publisher: | Oxford University Press |
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| ISSN: | 0035-8711 |
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| Status: | Published |
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| Keywords: | binaries: eclipsing, Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics |
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| HGF - Research field: | Aeronautics, Space and Transport |
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| HGF - Program: | Space |
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| HGF - Program Themes: | Space Exploration |
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| DLR - Research area: | Raumfahrt |
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| DLR - Program: | R EW - Space Exploration |
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| DLR - Research theme (Project): | R - Project PLATO (old) |
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Location: |
Berlin-Adlershof
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| Institutes and Institutions: | Institute of Planetary Research > Extrasolar Planets and Atmospheres |
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| Deposited By: |
Eigmüller, Dr. Philipp
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| Deposited On: | 04 Nov 2020 08:31 |
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| Last Modified: | 04 Nov 2020 08:31 |
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