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

Samuel Gill; Daniel Bayliss; Benjamin F. Cooke; Peter J. Wheatley; Louise D. Nielsen; Monika Lendl; James McCormac; Edward M. Bryant; Jack S. Acton; David R. Anderson; Claudia Belardi; François Bouchy; Matthew R. Burleigh; Andrew Collier Cameron; Sarah L. Casewell; Alexander Chaushev; Michael R. Goad; Maximilian N. Günther; Coel Hellier; James A. G. Jackman; James S. Jenkins; Maximiliano Moyano; Don Pollacco; Liam Raynard; Alexis M. S. Smith; Rosanna H. Tilbrook; Oliver Turner; Stéphane Udry; Richard G. West

doi:10.1093/mnras/stz3212

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

Samuel Gill
, Daniel Bayliss
, Benjamin F. Cooke
, Peter J. Wheatley
, Louise D. Nielsen
, Monika Lendl
, James McCormac
, Edward M. Bryant
, Jack S. Acton
, David R. Anderson
, Claudia Belardi
, François Bouchy
, Matthew R. Burleigh
, Andrew Collier Cameron
, Sarah L. Casewell
, Alexander Chaushev
, Michael R. Goad
, Maximilian N. Günther
, Coel Hellier
, James A. G. Jackman

James S. Jenkins, Maximiliano Moyano, Don Pollacco, Liam Raynard, Alexis M. S. Smith, Rosanna H. Tilbrook, Oliver Turner, Stéphane Udry, Richard G. West

Research output: Contribution to journal › Article › peer-review

Abstract

The Transiting Exoplanet Survey Satellite (TESS) produces a large numberof single-transit event candidates, since the mission monitors most stars for only ˜27 days. 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 hours around the moderately evolved F-dwarf star TIC-238855958 (T_mag=10.23, T_eff=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 characterised stars in this mass regime. We find that its radius is 2.3-σ lower than expected from stellar evolution models.

Original language	English
Pages (from-to)	1548–1553
Number of pages	6
Journal	Monthly Notices of the Royal Astronomical Society
Volume	491
Issue number	2
Early online date	19 Nov 2019
DOIs	https://doi.org/10.1093/mnras/stz3212
Publication status	Published - Jan 2020

Keywords

Binaries: eclipsing

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Gill-2019-NGTS-and-WASP-photometric-MNRAS-1548
Copyright © 2019 the Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at https://doi.org/10.1093/mnras/stz3212
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Astronomy at St Andrews 2018-2021: Astronomy at St Andrews 2018-2021
Jardine, M. (PI), Bonnell, I. (CoI), Cameron, A. (CoI), Cyganowski, C. (CoI), Dominik, M. (CoI), Helling, C. (CoI), Horne, K. (CoI), Scholz, A. (CoI), Tojeiro, R. (CoI), Weijmans, A.-M. (CoI), Wild, V. (CoI), Woitke, P. (CoI), Wood, K. (CoI) & Zhao, H. (CoI)
1/04/18 → 31/03/22
Project: Standard
Support for the PLATO Development: Support for the PLATO Development Phase 2017-2022: Planet candidate ranking and validation
Cameron, A. (PI)
Science & Technology Facilities Council
1/08/17 → 31/12/22
Project: Standard

Cite this

Gill, S., Bayliss, D., Cooke, B. F., Wheatley, P. J., Nielsen, L. D., Lendl, M., McCormac, J., Bryant, E. M., Acton, J. S., Anderson, D. R., Belardi, C., Bouchy, F., Burleigh, M. R., Collier Cameron, A., Casewell, S. L., Chaushev, A., Goad, M. R., Günther, M. N., Hellier, C., ... 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), 1548–1553. https://doi.org/10.1093/mnras/stz3212

@article{e69835514e3e4c8590850e7963c38023,

title = "NGTS and WASP photometric recovery of a single-transit candidate from TESS",

abstract = "The Transiting Exoplanet Survey Satellite (TESS) produces a large numberof single-transit event candidates, since the mission monitors most stars for only ˜27 days. 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 hours 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 characterised stars in this mass regime. We find that its radius is 2.3-σ lower than expected from stellar evolution models.",

keywords = "Binaries: eclipsing",

author = "Samuel Gill and Daniel Bayliss and Cooke, \{Benjamin F.\} and Wheatley, \{Peter J.\} and Nielsen, \{Louise D.\} and Monika Lendl and James McCormac and Bryant, \{Edward M.\} and Acton, \{Jack S.\} and Anderson, \{David R.\} and Claudia Belardi and Fran{\c c}ois Bouchy and Burleigh, \{Matthew R.\} and \{Collier Cameron\}, Andrew and Casewell, \{Sarah L.\} and Alexander Chaushev and Goad, \{Michael R.\} and G{\"u}nther, \{Maximilian N.\} and Coel Hellier and Jackman, \{James A. G.\} and Jenkins, \{James S.\} and Maximiliano Moyano and Don Pollacco and Liam Raynard and Smith, \{Alexis M. S.\} and Tilbrook, \{Rosanna H.\} and Oliver Turner and St{\'e}phane Udry and West, \{Richard G.\}",

note = "Funding:UK Science and Technology Facilities Council (STFC) consolidated grant number ST/R000824/1 (ACC). ",

year = "2020",

month = jan,

doi = "10.1093/mnras/stz3212",

language = "English",

volume = "491",

pages = "1548–1553",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

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}

Gill, S, Bayliss, D, Cooke, BF, Wheatley, PJ, Nielsen, LD, Lendl, M, McCormac, J, Bryant, EM, Acton, JS, Anderson, DR, Belardi, C, Bouchy, F, Burleigh, MR, Collier Cameron, A, Casewell, SL, Chaushev, A, Goad, MR, Günther, MN, Hellier, C, Jackman, JAG, Jenkins, JS, Moyano, M, Pollacco, D, Raynard, L, Smith, AMS, Tilbrook, RH, Turner, O, Udry, S & West, RG 2020, 'NGTS and WASP photometric recovery of a single-transit candidate from TESS', Monthly Notices of the Royal Astronomical Society, vol. 491, no. 2, pp. 1548–1553. https://doi.org/10.1093/mnras/stz3212

TY - JOUR

T1 - NGTS and WASP photometric recovery of a single-transit candidate from TESS

AU - Gill, Samuel

AU - Bayliss, Daniel

AU - Cooke, Benjamin F.

AU - Wheatley, Peter J.

AU - Nielsen, Louise D.

AU - Lendl, Monika

AU - McCormac, James

AU - Bryant, Edward M.

AU - Acton, Jack S.

AU - Anderson, David R.

AU - Belardi, Claudia

AU - Bouchy, François

AU - Burleigh, Matthew R.

AU - Collier Cameron, Andrew

AU - Casewell, Sarah L.

AU - Chaushev, Alexander

AU - Goad, Michael R.

AU - Günther, Maximilian N.

AU - Hellier, Coel

AU - Jackman, James A. G.

AU - Jenkins, James S.

AU - Moyano, Maximiliano

AU - Pollacco, Don

AU - Raynard, Liam

AU - Smith, Alexis M. S.

AU - Tilbrook, Rosanna H.

AU - Turner, Oliver

AU - Udry, Stéphane

AU - West, Richard G.

N1 - Funding:UK Science and Technology Facilities Council (STFC) consolidated grant number ST/R000824/1 (ACC).

PY - 2020/1

Y1 - 2020/1

N2 - The Transiting Exoplanet Survey Satellite (TESS) produces a large numberof single-transit event candidates, since the mission monitors most stars for only ˜27 days. 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 hours 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 characterised stars in this mass regime. We find that its radius is 2.3-σ lower than expected from stellar evolution models.

AB - The Transiting Exoplanet Survey Satellite (TESS) produces a large numberof single-transit event candidates, since the mission monitors most stars for only ˜27 days. 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 hours 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 characterised stars in this mass regime. We find that its radius is 2.3-σ lower than expected from stellar evolution models.

KW - Binaries: eclipsing

U2 - 10.1093/mnras/stz3212

DO - 10.1093/mnras/stz3212

M3 - Article

SN - 0035-8711

VL - 491

SP - 1548

EP - 1553

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

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

Abstract

Keywords

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Projects

Astronomy at St Andrews 2018-2021: Astronomy at St Andrews 2018-2021

Support for the PLATO Development: Support for the PLATO Development Phase 2017-2022: Planet candidate ranking and validation

Cite this