TOI-199 b: A Well-characterized 100 day Transiting Warm Giant Planet with TTVs Seen from Antarctica
Author:
Hobson Melissa J.ORCID, Trifonov TrifonORCID, Henning ThomasORCID, Jordán AndrésORCID, Rojas Felipe, Espinoza NestorORCID, Brahm RafaelORCID, Eberhardt JanORCID, Jones Matías I., Mekarnia Djamel, Kossakowski Diana, Schlecker MartinORCID, Tala Pinto Marcelo, Torres Miranda Pascal JoséORCID, Abe Lyu, Barkaoui KhalidORCID, Bendjoya Philippe, Bouchy François, Buttu Marco, Carleo IlariaORCID, Collins Karen A.ORCID, Colón Knicole D.ORCID, Crouzet NicolasORCID, Dragomir DianaORCID, Dransfield GeorginaORCID, Gasparetto Thomas, Goeke Robert F., Guillot TristanORCID, Günther Maximilian N.ORCID, Howard SaburoORCID, Jenkins Jon M.ORCID, Korth JudithORCID, Latham David W.ORCID, Lendl MonikaORCID, Lissauer Jack J.ORCID, Mann Christopher R.ORCID, Mireles IsmaelORCID, Ricker George R.ORCID, Saesen Sophie, Schwarz Richard P.ORCID, Seager S.ORCID, Sefako RamotholoORCID, Shporer AviORCID, Stockdale ChrisORCID, Suarez OlgaORCID, Tan Thiam-GuanORCID, Triaud Amaury H. M. J.ORCID, Ulmer-Moll Solène, Vanderspek RolandORCID, Winn Joshua N.ORCID, Wohler BillORCID, Zhou GeorgeORCID
Abstract
Abstract
We present the spectroscopic confirmation and precise mass measurement of the warm giant planet TOI-199 b. This planet was first identified in TESS photometry and confirmed using ground-based photometry from ASTEP in Antarctica including a full 6.5 hr long transit, PEST, Hazelwood, and LCO; space photometry from NEOSSat; and radial velocities (RVs) from FEROS, HARPS, CORALIE, and CHIRON. Orbiting a late G-type star, TOI-199 b has a
104.854
−
0.002
+
0.001
day
period, a mass of 0.17 ± 0.02 M
J, and a radius of 0.810 ± 0.005 R
J. It is the first warm exo-Saturn with a precisely determined mass and radius. The TESS and ASTEP transits show strong transit timing variations (TTVs), pointing to the existence of a second planet in the system. The joint analysis of the RVs and TTVs provides a unique solution for the nontransiting companion TOI-199 c, which has a period of
273.69
−
0.22
+
0.26
days
and an estimated mass of
0.28
−
0.01
+
0.02
M
J
. This period places it within the conservative habitable zone.
Publisher
American Astronomical Society
Subject
Space and Planetary Science,Astronomy and Astrophysics
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|