2023AJ....165..227B

Query : 2023AJ....165..227B

2023AJ....165..227B - Astron. J., 165, 227 (2023/June-0)

Three Long-period Transiting Giant Planets from TESS.

BRAHM R., ULMER-MOLL S., HOBSON M.J., JORDAN A., HENNING T., TRIFONOV T., JONES M.I., SCHLECKER M., ESPINOZA N., ROJAS F.I., TORRES P., SARKIS P., TALA M., EBERHARDT J., KOSSAKOWSKI D., MUNOZ D.J., HARTMAN J.D., BOYLE G., SUC V., BOUCHY F., DELINE A., CHAVEROT G., GRIEVES N., LENDL M., SUAREZ O., GUILLOT T., TRIAUD A.H.M.J., CROUZET N., DRANSFIELD G., CLOUTIER R., BARKAOUI K., SCHWARZ R.P., STOCKDALE C., HARRIS M., MIRELES I., EVANS P., MANN A.W., ZIEGLER C., DRAGOMIR D., VILLANUEVA S., MORDASINI C., RICKER G., VANDERSPEK R., LATHAM D.W., SEAGER S., WINN J.N., JENKINS J.M., VEZIE M., YOUNGBLOOD A., DAYLAN T., COLLINS K.A., CALDWELL D.A., CIARDI D.R., PALLE E. and MURGAS F.

Abstract (from CDS):

We report the discovery and orbital characterization of three new transiting warm giant planets. These systems were initially identified as presenting single-transit events in the light curves generated from the full-frame images of the Transiting Exoplanet Survey Satellite. Follow-up radial velocity measurements and additional light curves were used to determine the orbital periods and confirm the planetary nature of the candidates. The planets orbit slightly metal-rich late F- and early G-type stars. We find that TOI 4406b has a mass of MP = 0.30 ± 0.04 MJ, a radius of RP = 1.00 ± 0.02 RJ, and a low-eccentricity orbit (e = 0.15 ± 0.05) with a period of P = 30.08364 ±0.00005 days. TOI 2338b has a mass of MP = 5.98 ± 0.20 MJ, a radius of RP = 1.00 ± 0.01 RJ, and a highly eccentric orbit (e = 0.676 ± 0.002) with a period of P = 22.65398 ± 0.00002 days. Finally, TOI 2589b has a mass of MP = 3.50 ± 0.10 MJ, a radius of RP = 1.08 ± 0.03 RJ, and an eccentric orbit (e = 0.522 ± 0.006) with a period of P = 61.6277 ± 0.0002 days. TOI 4406b and TOI 2338b are enriched in metals compared to their host stars, while the structure of TOI 2589b is consistent with having similar metal enrichment to its host star.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Exoplanets - Extrasolar gaseous giant planets - Radial velocity - Transit photometry

VizieR on-line data: <Available at CDS (J/AJ/165/227): table1.dat table2.dat table3.dat>

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 CPD-57 261 * 01 12 11.5785261432 -56 55 31.690080408   11.605 11.088 10.56 10.43 ~ 18 0
2 CPD-57 261b Pl 01 12 11.5785261432 -56 55 31.690080408           ~ 8 0
3 TOI-2179b Pl 01 29 46.9565005368 -60 44 23.836519248           ~ 14 0
4 TOI-2338 * 05 25 22.6519821168 -34 40 05.974884336   13.14 12.48     ~ 12 0
5 TOI-2338b Pl 05 25 22.6519821168 -34 40 05.974884336           ~ 9 0
6 TOI-2589 * 07 09 57.1804826400 -37 13 51.542236596   11.90 11.41     ~ 10 0
7 TOI-2589b Pl 07 09 57.1804826400 -37 13 51.542236596           ~ 9 0
8 HD 300730b Pl 10 23 56.2397428368 -56 50 35.342013012           ~ 23 0
9 HATS-17b Pl 12 48 45.5454326808 -47 36 49.289882616           ~ 36 0

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