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Author  |
Lendl, M.; Bouchy, F.; Gill, S.; Nielsen, L.D.; Turner, O.; Stassun, K.; Acton, J.S.; Anderson, D.R.; Armstrong, D.J.; Bayliss, D.; Belardi, C.; Bryant, E.M.; Burleigh, M.R.; Chaushev, A.; Casewell, S.L.; Cooke, B.F.; Eigmuller, P.; Gillen, E.; Goad, M.R.; Gunther, M.N.; Hagelberg, J.; Jenkins, J.S.; Louden, T.; Marmier, M.; McCormac, J.; Moyano, M.; Pollacco, D.; Raynard, L.; Tilbrook, R.H.; Udry, S.; Vines, J.I.; West, R.G.; Wheatley, P.J.; Ricker, G.; Vanderspek, R.; Latham, D.W.; Seager, S.; Winn, J.; Jenkins, J.M.; Addison, B.; Briceno, C.; Brahm, R.; Caldwell, D.A.; Doty, J.; Espinoza, N.; Goeke, B.; Henning, T.; Jordan, A.; Krishnamurthy, A.; Law, N.; Morris, R.; Okumura, J.; Mann, A.W.; Rodriguez, J.E.; Sarkis, P.; Schlieder, J.; Twicken, J.D.; Villanueva, S.; Wittenmyer, R.A.; Wright, D.J.; Ziegler, C. |
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Title |
TOI-222: a single-transit TESS candidate revealed to be a 34-d eclipsing binary with CORALIE, EulerCam, and NGTS |
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Year |
2020 |
Publication |
Monthly Notices Of The Royal Astronomical Society |
Abbreviated Journal |
Mon. Not. Roy. Astron. Soc. |
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Volume |
492 |
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2 |
Pages |
1761-1769 |
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Keywords |
techniques: photometric; stars: individual: TOI-222; planetary systems |
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Abstract |
We report the period, eccentricity, and mass determination for the Transiting Exoplanet Survey Satellite (TESS) single-transit event candidate TOI-222, which displayed a single 3000 ppm transit in the TESS 2-min cadence data from Sector 2. We determine the orbital period via radial velocity measurements (P = 33.9 d), which allowed for ground-based photometric detection of two subsequent transits. Our data show that the companion to TOI-222 is a low-mass star, with a radius of 0.18(-0.10)(+0.39) R-circle dot and a mass of 0.23 +/- 0.01 M-circle dot. This discovery showcases the ability to efficiently discover long-period systems from TESS single-transit events using a combination of radial velocity monitoring coupled with high-precision ground-based photometry. |
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Address |
[Lendl, Monika; Bouchy, Francois; Nielsen, Louise D.; Turner, Oliver; Hagelberg, Janis; Marmier, Maxime; Udry, Stephane] Univ Geneva, Observ Geneve, 51 Ch Maillettes, CH-1290 Sauverny, Switzerland, Email: monika.lendl@unige.ch |
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Oxford Univ Press |
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English |
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0035-8711 |
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WOS:000512297600016 |
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Call Number |
UAI @ eduardo.moreno @ |
Serial |
1107 |
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