TOI-908: a planet at the edge of the Neptune desert transiting a G-type star

Faith Hawthorn; Daniel Bayliss; David J. Armstrong; Jorge Fernández Fernández; Ares Osborn; Sergio G. Sousa; Vardan Adibekyan; Jeanne Davoult; Karen A. Collins; Yann Alibert; Susana C.C. Barros; François Bouchy; Matteo Brogi; David R. Ciardi; Tansu Daylan; Elisa Delgado Mena; Olivier D.S. Demangeon; Rodrigo F. Díaz; Tianjun Gan; Keith Horne; Sergio Hoyer; Jon M. Jenkins; Eric L.N. Jensen; John F. Kielkopf; Veselin Kostov; David W. Latham; Alan M. Levine; Jorge Lillo-Box; Louise D. Nielsen; Hugh P. Osborn; George R. Ricker; Jose Rodrigues; Nuno C. Santos; Richard P. Schwarz; Sara Seager; Juan Serrano Bell; Avi Shporer; Chris Stockdale; Paul A. Strøm; Peter Tenenbaum; Stephane Udry; Peter J. Wheatley; Joshua N. Winn; Carl Ziegler

doi:10.1093/mnras/stad1840

TOI-908: a planet at the edge of the Neptune desert transiting a G-type star

Faith Hawthorn, Daniel Bayliss, David J. Armstrong, Jorge Fernández Fernández, Ares Osborn, Sergio G. Sousa, Vardan Adibekyan, Jeanne Davoult, Karen A. Collins, Yann Alibert, Susana C.C. Barros, François Bouchy, Matteo Brogi, David R. Ciardi, Tansu Daylan, Elisa Delgado Mena, Olivier D.S. Demangeon, Rodrigo F. Díaz, Tianjun Gan, Keith HorneSergio Hoyer, Jon M. Jenkins, Eric L.N. Jensen, John F. Kielkopf, Veselin Kostov, David W. Latham, Alan M. Levine, Jorge Lillo-Box, Louise D. Nielsen, Hugh P. Osborn, George R. Ricker, Jose Rodrigues, Nuno C. Santos, Richard P. Schwarz, Sara Seager, Juan Serrano Bell, Avi Shporer, Chris Stockdale, Paul A. Strøm, Peter Tenenbaum, Stephane Udry, Peter J. Wheatley, Joshua N. Winn, Carl Ziegler

Astrophysical Sciences

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Abstract

We present the discovery of an exoplanet transiting TOI-908 (TIC-350153977) using data from TESS sectors 1, 12, 13, 27, 28, and 39. TOI-908 is a T = 10.7 mag G-dwarf (Teff = 5626 ± 61 K) solar-like star with a mass of 0.950 ± 0.010 M⊙ and a radius of 1.028 ± 0.030 R⊙. The planet, TOI-908 b, is a 3.18 ± 0.16 R⊕ planet in a 3.18 d orbit. Radial velocity measurements from HARPS reveal TOI-908 b has a mass of approximately 16.1 ± 4.1 M⊕, resulting in a bulk planetary density of g cm-3. TOI-908 b lies in a sparsely populated region of parameter space known as the Neptune desert. The planet likely began its life as a sub-Saturn planet before it experienced significant photoevaporation due to X-rays and extreme ultraviolet radiation from its host star, and is likely to continue evaporating, losing a significant fraction of its residual envelope mass.

Original language	English (US)
Pages (from-to)	3877-3893
Number of pages	17
Journal	Monthly Notices of the Royal Astronomical Society
Volume	524
Issue number	3
DOIs	https://doi.org/10.1093/mnras/stad1840
State	Published - Sep 1 2023

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

planets and satellites: detection
stars: individual: TOI-908 (TIC-350153977, GAIA DR3 46192380870592067842)
techniques: photometric
techniques: radial velocities

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10.1093/mnras/stad1840

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Hawthorn, F., Bayliss, D., Armstrong, D. J., Fernández Fernández, J., Osborn, A., Sousa, S. G., Adibekyan, V., Davoult, J., Collins, K. A., Alibert, Y., Barros, S. C. C., Bouchy, F., Brogi, M., Ciardi, D. R., Daylan, T., Delgado Mena, E., Demangeon, O. D. S., Díaz, R. F., Gan, T., ... Ziegler, C. (2023). TOI-908: a planet at the edge of the Neptune desert transiting a G-type star. Monthly Notices of the Royal Astronomical Society, 524(3), 3877-3893. https://doi.org/10.1093/mnras/stad1840

@article{7ad88dae9f1e4afdaa40549f999683fc,

title = "TOI-908: a planet at the edge of the Neptune desert transiting a G-type star",

abstract = "We present the discovery of an exoplanet transiting TOI-908 (TIC-350153977) using data from TESS sectors 1, 12, 13, 27, 28, and 39. TOI-908 is a T = 10.7 mag G-dwarf (Teff = 5626 ± 61 K) solar-like star with a mass of 0.950 ± 0.010 M⊙ and a radius of 1.028 ± 0.030 R⊙. The planet, TOI-908 b, is a 3.18 ± 0.16 R⊕ planet in a 3.18 d orbit. Radial velocity measurements from HARPS reveal TOI-908 b has a mass of approximately 16.1 ± 4.1 M⊕, resulting in a bulk planetary density of g cm-3. TOI-908 b lies in a sparsely populated region of parameter space known as the Neptune desert. The planet likely began its life as a sub-Saturn planet before it experienced significant photoevaporation due to X-rays and extreme ultraviolet radiation from its host star, and is likely to continue evaporating, losing a significant fraction of its residual envelope mass.",

keywords = "planets and satellites: detection, stars: individual: TOI-908 (TIC-350153977, GAIA DR3 46192380870592067842), techniques: photometric, techniques: radial velocities",

author = "Faith Hawthorn and Daniel Bayliss and Armstrong, {David J.} and {Fern{\'a}ndez Fern{\'a}ndez}, Jorge and Ares Osborn and Sousa, {Sergio G.} and Vardan Adibekyan and Jeanne Davoult and Collins, {Karen A.} and Yann Alibert and Barros, {Susana C.C.} and Fran{\c c}ois Bouchy and Matteo Brogi and Ciardi, {David R.} and Tansu Daylan and {Delgado Mena}, Elisa and Demangeon, {Olivier D.S.} and D{\'i}az, {Rodrigo F.} and Tianjun Gan and Keith Horne and Sergio Hoyer and Jenkins, {Jon M.} and Jensen, {Eric L.N.} and Kielkopf, {John F.} and Veselin Kostov and Latham, {David W.} and Levine, {Alan M.} and Jorge Lillo-Box and Nielsen, {Louise D.} and Osborn, {Hugh P.} and Ricker, {George R.} and Jose Rodrigues and Santos, {Nuno C.} and Schwarz, {Richard P.} and Sara Seager and {Serrano Bell}, Juan and Avi Shporer and Chris Stockdale and Str{\o}m, {Paul A.} and Peter Tenenbaum and Stephane Udry and Wheatley, {Peter J.} and Winn, {Joshua N.} and Carl Ziegler",

note = "Publisher Copyright: {\textcopyright} 2023 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.",

year = "2023",

month = sep,

day = "1",

doi = "10.1093/mnras/stad1840",

language = "English (US)",

volume = "524",

pages = "3877--3893",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "3",

}

Hawthorn, F, Bayliss, D, Armstrong, DJ, Fernández Fernández, J, Osborn, A, Sousa, SG, Adibekyan, V, Davoult, J, Collins, KA, Alibert, Y, Barros, SCC, Bouchy, F, Brogi, M, Ciardi, DR, Daylan, T, Delgado Mena, E, Demangeon, ODS, Díaz, RF, Gan, T, Horne, K, Hoyer, S, Jenkins, JM, Jensen, ELN, Kielkopf, JF, Kostov, V, Latham, DW, Levine, AM, Lillo-Box, J, Nielsen, LD, Osborn, HP, Ricker, GR, Rodrigues, J, Santos, NC, Schwarz, RP, Seager, S, Serrano Bell, J, Shporer, A, Stockdale, C, Strøm, PA, Tenenbaum, P, Udry, S, Wheatley, PJ, Winn, JN & Ziegler, C 2023, 'TOI-908: a planet at the edge of the Neptune desert transiting a G-type star', Monthly Notices of the Royal Astronomical Society, vol. 524, no. 3, pp. 3877-3893. https://doi.org/10.1093/mnras/stad1840

TY - JOUR

T1 - TOI-908

T2 - a planet at the edge of the Neptune desert transiting a G-type star

AU - Hawthorn, Faith

AU - Bayliss, Daniel

AU - Armstrong, David J.

AU - Fernández Fernández, Jorge

AU - Osborn, Ares

AU - Sousa, Sergio G.

AU - Adibekyan, Vardan

AU - Davoult, Jeanne

AU - Collins, Karen A.

AU - Alibert, Yann

AU - Barros, Susana C.C.

AU - Bouchy, François

AU - Brogi, Matteo

AU - Ciardi, David R.

AU - Daylan, Tansu

AU - Delgado Mena, Elisa

AU - Demangeon, Olivier D.S.

AU - Díaz, Rodrigo F.

AU - Gan, Tianjun

AU - Horne, Keith

AU - Hoyer, Sergio

AU - Jenkins, Jon M.

AU - Jensen, Eric L.N.

AU - Kielkopf, John F.

AU - Kostov, Veselin

AU - Latham, David W.

AU - Levine, Alan M.

AU - Lillo-Box, Jorge

AU - Nielsen, Louise D.

AU - Osborn, Hugh P.

AU - Ricker, George R.

AU - Rodrigues, Jose

AU - Santos, Nuno C.

AU - Schwarz, Richard P.

AU - Seager, Sara

AU - Serrano Bell, Juan

AU - Shporer, Avi

AU - Stockdale, Chris

AU - Strøm, Paul A.

AU - Tenenbaum, Peter

AU - Udry, Stephane

AU - Wheatley, Peter J.

AU - Winn, Joshua N.

AU - Ziegler, Carl

PY - 2023/9/1

Y1 - 2023/9/1

N2 - We present the discovery of an exoplanet transiting TOI-908 (TIC-350153977) using data from TESS sectors 1, 12, 13, 27, 28, and 39. TOI-908 is a T = 10.7 mag G-dwarf (Teff = 5626 ± 61 K) solar-like star with a mass of 0.950 ± 0.010 M⊙ and a radius of 1.028 ± 0.030 R⊙. The planet, TOI-908 b, is a 3.18 ± 0.16 R⊕ planet in a 3.18 d orbit. Radial velocity measurements from HARPS reveal TOI-908 b has a mass of approximately 16.1 ± 4.1 M⊕, resulting in a bulk planetary density of g cm-3. TOI-908 b lies in a sparsely populated region of parameter space known as the Neptune desert. The planet likely began its life as a sub-Saturn planet before it experienced significant photoevaporation due to X-rays and extreme ultraviolet radiation from its host star, and is likely to continue evaporating, losing a significant fraction of its residual envelope mass.

AB - We present the discovery of an exoplanet transiting TOI-908 (TIC-350153977) using data from TESS sectors 1, 12, 13, 27, 28, and 39. TOI-908 is a T = 10.7 mag G-dwarf (Teff = 5626 ± 61 K) solar-like star with a mass of 0.950 ± 0.010 M⊙ and a radius of 1.028 ± 0.030 R⊙. The planet, TOI-908 b, is a 3.18 ± 0.16 R⊕ planet in a 3.18 d orbit. Radial velocity measurements from HARPS reveal TOI-908 b has a mass of approximately 16.1 ± 4.1 M⊕, resulting in a bulk planetary density of g cm-3. TOI-908 b lies in a sparsely populated region of parameter space known as the Neptune desert. The planet likely began its life as a sub-Saturn planet before it experienced significant photoevaporation due to X-rays and extreme ultraviolet radiation from its host star, and is likely to continue evaporating, losing a significant fraction of its residual envelope mass.

KW - planets and satellites: detection

KW - stars: individual: TOI-908 (TIC-350153977, GAIA DR3 46192380870592067842)

KW - techniques: photometric

KW - techniques: radial velocities

UR - http://www.scopus.com/inward/record.url?scp=85168140161&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85168140161&partnerID=8YFLogxK

U2 - 10.1093/mnras/stad1840

DO - 10.1093/mnras/stad1840

M3 - Article

AN - SCOPUS:85168140161

SN - 0035-8711

VL - 524

SP - 3877

EP - 3893

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

TOI-908: a planet at the edge of the Neptune desert transiting a G-type star

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