@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",
number = "2",
}