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

Melissa J. Hobson; Trifon Trifonov; Thomas Henning; Andrés Jordán; Felipe Rojas; Nestor Espinoza; Rafael Brahm; Jan Eberhardt; Matías I. Jones; Djamel Mekarnia; Diana Kossakowski; Martin Schlecker; Marcelo Tala Pinto; Pascal José Torres Miranda; Lyu Abe; Khalid Barkaoui; Philippe Bendjoya; François Bouchy; Marco Buttu; Ilaria Carleo; Karen A. Collins; Knicole D. Colón; Nicolas Crouzet; Diana Dragomir; Georgina Dransfield; Thomas Gasparetto; Robert F. Goeke; Tristan Guillot; Maximilian N. Günther; Saburo Howard; Jon M. Jenkins; Judith Korth; David W. Latham; Monika Lendl; Jack J. Lissauer; Christopher R. Mann; Ismael Mireles; George R. Ricker; Sophie Saesen; Richard P. Schwarz; S. Seager; Ramotholo Sefako; Avi Shporer; Chris Stockdale; Olga Suarez; Thiam Guan Tan; Amaury H.M. Amaury; Solène Ulmer-Moll; Roland Vanderspek; Joshua N. Winn; Bill Wohler; George Zhou

doi:10.3847/1538-3881/acfc1d

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

Melissa J. Hobson, Trifon Trifonov, Thomas Henning, Andrés Jordán, Felipe Rojas, Nestor Espinoza, Rafael Brahm, Jan Eberhardt, Matías I. Jones, Djamel Mekarnia, Diana Kossakowski, Martin Schlecker, Marcelo Tala Pinto, Pascal José Torres Miranda, Lyu Abe, Khalid Barkaoui, Philippe Bendjoya, François Bouchy, Marco Buttu, Ilaria CarleoKaren A. Collins, Knicole D. Colón, Nicolas Crouzet, Diana Dragomir, Georgina Dransfield, Thomas Gasparetto, Robert F. Goeke, Tristan Guillot, Maximilian N. Günther, Saburo Howard, Jon M. Jenkins, Judith Korth, David W. Latham, Monika Lendl, Jack J. Lissauer, Christopher R. Mann, Ismael Mireles, George R. Ricker, Sophie Saesen, Richard P. Schwarz, S. Seager, Ramotholo Sefako, Avi Shporer, Chris Stockdale, Olga Suarez, Thiam Guan Tan, Amaury H.M. Amaury, Solène Ulmer-Moll, Roland Vanderspek, Joshua N. Winn, Bill Wohler, George Zhou

Astrophysical Sciences

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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.

Original language	English (US)
Article number	201
Journal	Astronomical Journal
Volume	166
Issue number	5
DOIs	https://doi.org/10.3847/1538-3881/acfc1d
State	Published - Nov 1 2023

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/1538-3881/acfc1d

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Hobson, M. J., Trifonov, T., Henning, T., Jordán, A., Rojas, F., Espinoza, N., Brahm, R., Eberhardt, J., Jones, M. I., Mekarnia, D., Kossakowski, D., Schlecker, M., Pinto, M. T., Torres Miranda, P. J., Abe, L., Barkaoui, K., Bendjoya, P., Bouchy, F., Buttu, M., ... Zhou, G. (2023). TOI-199 b: A Well-characterized 100 day Transiting Warm Giant Planet with TTVs Seen from Antarctica. Astronomical Journal, 166(5), Article 201. https://doi.org/10.3847/1538-3881/acfc1d

@article{e4528495c6744f1cbc43d96bb7b282fd,

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

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.",

author = "Hobson, {Melissa J.} and Trifon Trifonov and Thomas Henning and Andr{\'e}s Jord{\'a}n and Felipe Rojas and Nestor Espinoza and Rafael Brahm and Jan Eberhardt and Jones, {Mat{\'i}as I.} and Djamel Mekarnia and Diana Kossakowski and Martin Schlecker and Pinto, {Marcelo Tala} and {Torres Miranda}, {Pascal Jos{\'e}} and Lyu Abe and Khalid Barkaoui and Philippe Bendjoya and Fran{\c c}ois Bouchy and Marco Buttu and Ilaria Carleo and Collins, {Karen A.} and Col{\'o}n, {Knicole D.} and Nicolas Crouzet and Diana Dragomir and Georgina Dransfield and Thomas Gasparetto and Goeke, {Robert F.} and Tristan Guillot and G{\"u}nther, {Maximilian N.} and Saburo Howard and Jenkins, {Jon M.} and Judith Korth and Latham, {David W.} and Monika Lendl and Lissauer, {Jack J.} and Mann, {Christopher R.} and Ismael Mireles and Ricker, {George R.} and Sophie Saesen and Schwarz, {Richard P.} and S. Seager and Ramotholo Sefako and Avi Shporer and Chris Stockdale and Olga Suarez and Tan, {Thiam Guan} and Amaury, {Amaury H.M.} and Sol{\`e}ne Ulmer-Moll and Roland Vanderspek and Winn, {Joshua N.} and Bill Wohler and George Zhou",

note = "Publisher Copyright: {\textcopyright} 2023. The Author(s). Published by the American Astronomical Society.",

year = "2023",

month = nov,

day = "1",

doi = "10.3847/1538-3881/acfc1d",

language = "English (US)",

volume = "166",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "5",

}

Hobson, MJ, Trifonov, T, Henning, T, Jordán, A, Rojas, F, Espinoza, N, Brahm, R, Eberhardt, J, Jones, MI, Mekarnia, D, Kossakowski, D, Schlecker, M, Pinto, MT, Torres Miranda, PJ, Abe, L, Barkaoui, K, Bendjoya, P, Bouchy, F, Buttu, M, Carleo, I, Collins, KA, Colón, KD, Crouzet, N, Dragomir, D, Dransfield, G, Gasparetto, T, Goeke, RF, Guillot, T, Günther, MN, Howard, S, Jenkins, JM, Korth, J, Latham, DW, Lendl, M, Lissauer, JJ, Mann, CR, Mireles, I, Ricker, GR, Saesen, S, Schwarz, RP, Seager, S, Sefako, R, Shporer, A, Stockdale, C, Suarez, O, Tan, TG, Amaury, AHM, Ulmer-Moll, S, Vanderspek, R, Winn, JN, Wohler, B & Zhou, G 2023, 'TOI-199 b: A Well-characterized 100 day Transiting Warm Giant Planet with TTVs Seen from Antarctica', Astronomical Journal, vol. 166, no. 5, 201. https://doi.org/10.3847/1538-3881/acfc1d

TY - JOUR

T1 - TOI-199 b

T2 - A Well-characterized 100 day Transiting Warm Giant Planet with TTVs Seen from Antarctica

AU - Hobson, Melissa J.

AU - Trifonov, Trifon

AU - Henning, Thomas

AU - Jordán, Andrés

AU - Rojas, Felipe

AU - Espinoza, Nestor

AU - Brahm, Rafael

AU - Eberhardt, Jan

AU - Jones, Matías I.

AU - Mekarnia, Djamel

AU - Kossakowski, Diana

AU - Schlecker, Martin

AU - Pinto, Marcelo Tala

AU - Torres Miranda, Pascal José

AU - Abe, Lyu

AU - Barkaoui, Khalid

AU - Bendjoya, Philippe

AU - Bouchy, François

AU - Buttu, Marco

AU - Carleo, Ilaria

AU - Collins, Karen A.

AU - Colón, Knicole D.

AU - Crouzet, Nicolas

AU - Dragomir, Diana

AU - Dransfield, Georgina

AU - Gasparetto, Thomas

AU - Goeke, Robert F.

AU - Guillot, Tristan

AU - Günther, Maximilian N.

AU - Howard, Saburo

AU - Jenkins, Jon M.

AU - Korth, Judith

AU - Latham, David W.

AU - Lendl, Monika

AU - Lissauer, Jack J.

AU - Mann, Christopher R.

AU - Mireles, Ismael

AU - Ricker, George R.

AU - Saesen, Sophie

AU - Schwarz, Richard P.

AU - Seager, S.

AU - Sefako, Ramotholo

AU - Shporer, Avi

AU - Stockdale, Chris

AU - Suarez, Olga

AU - Tan, Thiam Guan

AU - Amaury, Amaury H.M.

AU - Ulmer-Moll, Solène

AU - Vanderspek, Roland

AU - Winn, Joshua N.

AU - Wohler, Bill

AU - Zhou, George

PY - 2023/11/1

Y1 - 2023/11/1

N2 - 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.

AB - 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.

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UR - http://www.scopus.com/inward/citedby.url?scp=85175952516&partnerID=8YFLogxK

U2 - 10.3847/1538-3881/acfc1d

DO - 10.3847/1538-3881/acfc1d

M3 - Article

AN - SCOPUS:85175952516

SN - 0004-6256

VL - 166

JO - Astronomical Journal

JF - Astronomical Journal

IS - 5

M1 - 201

ER -

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

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