TOI-222: a 34-d eclipsing binary

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 3000ppm transit in the TESS 2-min cadence data from Sector 2. We determine the orbital period via radial velocity measurements (P=33.9d), 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_{sun} and a mass of 0.23+/-0.01M{sun}_. 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.

Cone search capability for table J/MNRAS/492/1761/table4 (Stellar properties of the primary)

Identifier
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/MNRAS/492/1761
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/492/1761
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/492/1761
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/MNRAS/492/1761
Provenance
Creator 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.
Publisher CDS
Publication Year 2023
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysical Processes; Astrophysics and Astronomy; Exoplanet Astronomy; Galactic and extragalactic Astronomy; Interdisciplinary Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy