NGTS and WASP photometric recovery of a single-transit candidate from TESS

Gill, Samuel and Bayliss, D. and Cooke, Benjamin F. and Wheatley, P. and Nielsen, L. D. and Lendl, M and McCormac, J. J. and Bryant, Edward and Acton, Jack S. and Anderson, D. R. and Belardi, C. and Bouchy, F. and Burleigh, M. and Collier Cameron, A. and Casewell, S and Chaushev, Alexander and Goad, Michael R. and Günther, Maximilian N. and Hellier, C. and Jackman, James A.G. and Jenkins, J. and Moyano, Maximiliano and Pollacco, D. and Raynard, L. and Smith, Alexis M S and Tilbrook, Rosanna H. and Turner, Oliver and Udry, S. and West, R. G. (2020) NGTS and WASP photometric recovery of a single-transit candidate from TESS. Monthly Notices of the Royal Astronomical Society, 491 (2), pp. 1548-1553. Oxford University Press. doi: 10.1093/mnras/stz3212. ISSN 0035-8711.

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Abstract

The Transiting Exoplanet Survey Satellite (TESS) produces a large number of single-transit event candidates, since the mission monitors most stars for only ∼27 d. Such candidates correspond to long-period planets or eclipsing binaries. Using the TESS Sector 1 full-frame images, we identified a 7750 ppm single-transit event with a duration of 7 h around the moderately evolved F-dwarf star TIC-238855958 (Tmag = 10.23, Teff = 6280 ± 85 K). Using archival WASP photometry we constrained the true orbital period to one of three possible values. We detected a subsequent transit-event with NGTS, which revealed the orbital period to be 38.20 d. Radial velocity measurements from the CORALIE Spectrograph show the secondary object has a mass of M2 = 0.148 ± 0.003 M☉, indicating this system is an F-M eclipsing binary. The radius of the M-dwarf companion is R2 = 0.171 ± 0.003 R☉, making this one of the most well characterized stars in this mass regime. We find that its radius is 2.3σ lower than expected from stellar evolution models.

Item URL in elib:

https://elib.dlr.de/136283/

Document Type:

Article

Title:

NGTS and WASP photometric recovery of a single-transit candidate from TESS

Authors:

Authors	Institution or Email of Authors	Author's ORCID iD
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
Bayliss, D.	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
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
Wheatley, P.	Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL	UNSPECIFIED
Nielsen, L. D.	Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290 Versoix, Switzerland	UNSPECIFIED
Lendl, M	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
McCormac, J. J.	Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK; Las Cumbres Observatory, 6740 Cortona Drive, Suite 102, Goleta, CA 93117, USA	UNSPECIFIED
Bryant, Edward	Centre for Exoplanets and Habitability, University of Warwick , Gibbet Hill Road, Coventry CV4 7AL, UK Dept. of Physics, University of Warwick , Gibbet Hill Road, Coventry CV4 7AL, UK	UNSPECIFIED
Acton, Jack S.	Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK	UNSPECIFIED
Anderson, D. 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
Belardi, C.	Department of Physics and Astronomy, Leicester Institute of Space and Earth Observation, University of Leicester, University Road, Leicester LE1 7RH, UK	UNSPECIFIED
Bouchy, F.	Observatoire de l Universite de Geneve, 51 chemin des Maillettes, 1290 Sauverny, Switzerland	UNSPECIFIED
Burleigh, M.	Dept. of Physics and Astronomy, University of Leicester, United Kingdom	UNSPECIFIED
Collier Cameron, A.	SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife KY16 9SS, UK	UNSPECIFIED
Casewell, S	Department of Physics and Astronomy, Leicester Institute of Space and Earth Observation, University of Leicester, University Road, Leicester LE1 7RH	UNSPECIFIED
Chaushev, Alexander	Center for Astronomy and Astrophysics, TU Berlin, Hardenbergstr. 36, 10623 Berlin, GermanyCenter for Astronomy and Astrophysics, TU Berlin, Germany	UNSPECIFIED
Goad, Michael R.	Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK	UNSPECIFIED
Günther, Maximilian N.	Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA	UNSPECIFIED
Hellier, C.	Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK	UNSPECIFIED
Jackman, James A.G.	Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL	UNSPECIFIED
Jenkins, J.	Departamento de Astronomía, Universidad de Chile, Santiago, Chile	UNSPECIFIED
Moyano, Maximiliano	Instituto de Astronomía, Universidad Católica del Norte, Angamos 0610, 1270709 Antofagasta, Chile	UNSPECIFIED
Pollacco, D.	Department of Physics, University of Warwick, Coventry CV4 7AL, UK	UNSPECIFIED
Raynard, L.	Department of Physics and Astronomy, Leicester Institute of Space and Earth Observation, University of Leicester, LE1 7RH, UK	UNSPECIFIED
Smith, Alexis M S	UNSPECIFIED	https://orcid.org/0000-0002-2386-4341
Tilbrook, Rosanna H.	Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK	UNSPECIFIED
Turner, Oliver	Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, CH-1290 Sauverny, Switzerland	UNSPECIFIED
Udry, S.	Observatoire de Geneve, Universite de Geneve, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland	UNSPECIFIED
West, R. G.	Department of Physics, University of Warwick, Coventry CV4 7AL, UK	UNSPECIFIED

Date:

2020

Journal or Publication Title:

Monthly Notices of the Royal Astronomical Society

Refereed publication:

Yes

Open Access:

Yes

Gold Open Access:

In SCOPUS:

Yes

In ISI Web of Science:

Yes

Volume:

491

DOI:

10.1093/mnras/stz3212

Page Range:

pp. 1548-1553

Publisher:

Oxford University Press

ISSN:

0035-8711

Status:

Published

Keywords:

binaries: eclipsing; Astrophysics - Solar and Stellar Astrophysics; Astrophysics - Earth and Planetary Astrophysics

HGF - Research field:

Aeronautics, Space and Transport

HGF - Program:

Space

HGF - Program Themes:

Space Exploration

DLR - Research area:

Raumfahrt

DLR - Program:

R EW - Space Exploration

DLR - Research theme (Project):

R - Projekt COROT Beteiligung (old)

Location:

Berlin-Adlershof

Institutes and Institutions:

Institute of Planetary Research > Extrasolar Planets and Atmospheres

Deposited By:

Smith, Dr Alexis M S

Deposited On:

06 Oct 2020 08:19

Last Modified:

06 Oct 2020 08:19

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