SIMBAD references

2024AJ....168..273B - Astron. J., 168, 273 (2024/December-0)

Searching for GEMS: TOI-6383Ab, a Giant Planet Transiting an M3-dwarf Star in a Binary System.

BERNABO L.M., KANODIA S., CANAS C.I., COCHRAN W.D., CSIZMADIA S., MAHADEVAN S., STEFANSSON G., GUPTA A.F., MONSON A., KOBULNICKY H.A., LARSEN A.K., COTTER E.G., BIRKHOLZ A., SWABY T.N., ZEIMANN G., BENDER C.F., DIDDAMS S.A., LIBBY-ROBERTS J.E., LIN A.S.J., NINAN J.P., RAUER H., REJI V., ROBERTSON P., ROY A. and SCHWAB C.

Abstract (from CDS):

We report on the discovery of a transiting giant planet around the 3500 K M3-dwarf star TOI-6383A located 172 pc from Earth. It was detected by the Transiting Exoplanet Survey Satellite and confirmed by a combination of ground-based follow-up photometry and precise radial velocity measurements. This planet has an orbital period of ∼1.791 days, a mass of 1.040 ± 0.094 MJ, and a radius of ${1.008}_{-0.033}^{+0.036}\,{R}_{J}$, resulting in a mean bulk density of ${1.26}_{-0.17}^{+0.18}$ g cm–3. TOI-6383A has an M dwarf companion star, TOI-6383B, which has a stellar effective temperature of Teff ∼ 3100 K and a projected orbital separation of 3126 au. TOI-6383A is a low-mass dwarf star hosting a giant planet and is an intriguing object for planetary evolution studies due to its high planet-to-star mass ratio. This discovery is part of the Searching for Giant Exoplanets around M-dwarf Stars (GEMS) Survey, intending to provide robust and accurate estimates of the occurrence of GEMS and the statistics on their physical and orbital parameters. This paper presents an interesting addition to the small number of confirmed GEMS, particularly notable since its formation necessitates massive, dust-rich protoplanetary discs and high accretion efficiency (>10%).

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Exoplanet astronomy - Exoplanet detection methods - Exoplanet formation - Exoplanets - Planet hosting stars - Multiple stars - Detection - Radial velocity

Simbad objects: 18

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