Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

TOI-199 b : A Well-characterized 100 day Transiting Warm Giant Planet with TTVs Seen from Antarctica

Hobson, Melissa J. ; Trifonov, Trifon ; Henning, Thomas ; Jordán, Andrés ; Rojas, Felipe ; Espinoza, Nestor ; Brahm, Rafael ; Eberhardt, Jan ; Jones, Matías I. and Mekarnia, Djamel , et al. (2023) In Astronomical Journal 166(5).
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... (More)

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.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; ; and , et al. (More)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; and (Less)
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Astronomical Journal
volume
166
issue
5
article number
201
publisher
IOP Publishing
external identifiers
  • scopus:85175952516
ISSN
0004-6256
DOI
10.3847/1538-3881/acfc1d
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2023. The Author(s). Published by the American Astronomical Society.
id
53b2ae60-c1fb-4141-93c7-3ccfda122170
date added to LUP
2024-01-16 13:02:21
date last changed
2024-04-16 21:33:46
@article{53b2ae60-c1fb-4141-93c7-3ccfda122170,
  abstract     = {{<p>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 <sub>J</sub>, and a radius of 0.810 ± 0.005 R <sub>J</sub>. 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.</p>}},
  author       = {{Hobson, Melissa J. and Trifonov, Trifon and Henning, Thomas and Jordán, Andrés and Rojas, Felipe and Espinoza, Nestor and Brahm, Rafael and Eberhardt, Jan and Jones, Matías I. and Mekarnia, Djamel and Kossakowski, Diana and Schlecker, Martin and Pinto, Marcelo Tala and Torres Miranda, Pascal José and Abe, Lyu and Barkaoui, Khalid and Bendjoya, Philippe and Bouchy, François and Buttu, Marco and Carleo, Ilaria and Collins, Karen A. and Colón, Knicole D. and Crouzet, Nicolas and Dragomir, Diana and Dransfield, Georgina and Gasparetto, Thomas and Goeke, Robert F. and Guillot, Tristan and Günther, Maximilian N. and Howard, Saburo and Jenkins, Jon M. and Korth, Judith and Latham, David W. and Lendl, Monika and Lissauer, Jack J. and Mann, Christopher R. and Mireles, Ismael and Ricker, George R. and Saesen, Sophie and Schwarz, Richard P. and Seager, S. and Sefako, Ramotholo and Shporer, Avi and Stockdale, Chris and Suarez, Olga and Tan, Thiam Guan and Amaury, Amaury H.M. and Ulmer-Moll, Solène and Vanderspek, Roland and Winn, Joshua N. and Wohler, Bill and Zhou, George}},
  issn         = {{0004-6256}},
  language     = {{eng}},
  month        = {{11}},
  number       = {{5}},
  publisher    = {{IOP Publishing}},
  series       = {{Astronomical Journal}},
  title        = {{TOI-199 b : A Well-characterized 100 day Transiting Warm Giant Planet with TTVs Seen from Antarctica}},
  url          = {{http://dx.doi.org/10.3847/1538-3881/acfc1d}},
  doi          = {{10.3847/1538-3881/acfc1d}},
  volume       = {{166}},
  year         = {{2023}},
}