TOI-257b (HD 19916b): A warm sub-saturn orbiting an evolved F-type star

Brett C. Addison; Duncan J. Wright; Belinda A. Nicholson; Bryson Cale; Teo Mocnik; Daniel Huber; Peter Plavchan; Robert A. Wittenmyer; Andrew Vanderburg; William J. Chaplin; Ashley Chontos; Jake T. Clark; Jason D. Eastman; Carl Ziegler; Rafael Brahm; Bradley D. Carter; Mathieu Clerte; Néstor Espinoza; Jonathan Horner; John Bentley; Andrés Jordán; Stephen R. Kane; John F. Kielkopf; Emilie Laychock; Matthew W. Mengel; Jack Okumura; Keivan G. Stassun; Timothy R. Bedding; Brendan P. Bowler; Andrius Burnelis; Sergi Blanco-Cuaresma; Michaela Collins; Ian Crossfield; Allen B. Davis; Dag Evensberget; Alexis Heitzmann; Steve B. Howell; Nicholas Law; Andrew W. Mann; Stephen C. Marsden; Rachel A. Matson; James H. O'Connor; Avi Shporer; Catherine Stevens; C. G. Tinney; Christopher Tylor; Songhu Wang; Hui Zhang; Thomas Henning; Diana Kossakowski; George Ricker; Paula Sarkis; Martin Schlecker; Pascal Torres; Roland Vanderspek; David W. Latham; Sara Seager; Joshua N. Winn; Jon M. Jenkins; Ismael Mireles; Pam Rowden; Joshua Pepper; Tansu Daylan; Joshua E. Schlieder; Karen A. Collins; Kevin I. Collins; Thiam Guan Tan; Warrick H. Ball; Sarbani Basu; Derek L. Buzasi; Tiago L. Campante; Enrico Corsaro; L. González-Cuesta; Guy R. Davies; Leandro De Almeida; Jose Dias Do Nascimento; Rafael A. García; Zhao Guo; Rasmus Handberg; Saskia Hekker; Daniel R. Hey; Thomas Kallinger; Steven D. Kawaler; Cenk Kayhan; James S. Kuszlewicz; Mikkel N. Lund; Alexander Lyttle; Savita Mathur; Andrea Miglio; Benoit Mosser; Martin B. Nielsen; Aldo M. Serenelli; Victor Silva Aguirre; Nathalie Themeßl

doi:10.1093/mnras/staa3960

TOI-257b (HD 19916b): A warm sub-saturn orbiting an evolved F-type star

Brett C. Addison, Duncan J. Wright, Belinda A. Nicholson, Bryson Cale, Teo Mocnik, Daniel Huber, Peter Plavchan, Robert A. Wittenmyer, Andrew Vanderburg, William J. Chaplin, Ashley Chontos, Jake T. Clark, Jason D. Eastman, Carl Ziegler, Rafael Brahm, Bradley D. Carter, Mathieu Clerte, Néstor Espinoza, Jonathan Horner, John BentleyAndrés Jordán, Stephen R. Kane, John F. Kielkopf, Emilie Laychock, Matthew W. Mengel, Jack Okumura, Keivan G. Stassun, Timothy R. Bedding, Brendan P. Bowler, Andrius Burnelis, Sergi Blanco-Cuaresma, Michaela Collins, Ian Crossfield, Allen B. Davis, Dag Evensberget, Alexis Heitzmann, Steve B. Howell, Nicholas Law, Andrew W. Mann, Stephen C. Marsden, Rachel A. Matson, James H. O'Connor, Avi Shporer, Catherine Stevens, C. G. Tinney, Christopher Tylor, Songhu Wang, Hui Zhang, Thomas Henning, Diana Kossakowski, George Ricker, Paula Sarkis, Martin Schlecker, Pascal Torres, Roland Vanderspek, David W. Latham, Sara Seager, Joshua N. Winn, Jon M. Jenkins, Ismael Mireles, Pam Rowden, Joshua Pepper, Tansu Daylan, Joshua E. Schlieder, Karen A. Collins, Kevin I. Collins, Thiam Guan Tan, Warrick H. Ball, Sarbani Basu, Derek L. Buzasi, Tiago L. Campante, Enrico Corsaro, L. González-Cuesta, Guy R. Davies, Leandro De Almeida, Jose Dias Do Nascimento, Rafael A. García, Zhao Guo, Rasmus Handberg, Saskia Hekker, Daniel R. Hey, Thomas Kallinger, Steven D. Kawaler, Cenk Kayhan, James S. Kuszlewicz, Mikkel N. Lund, Alexander Lyttle, Savita Mathur, Andrea Miglio, Benoit Mosser, Martin B. Nielsen, Aldo M. Serenelli, Victor Silva Aguirre, Nathalie Themeßl

Research output: Contribution to journal › Article › peer-review

Abstract

The discovery of a warm sub-Saturn planet, TOI-257b (HD 19916b), is reported, utilizing data from NASA's Transiting Exoplanet Survey Satellite (TESS). The transit signal detected by TESS was confirmed as a planet through radial velocity observations. Analysis of TESS photometry, Minerva-Australis, FEROS, and HARPS radial velocities, alongside asteroseismic data, shows that TOI-257b has a mass of 0.138 ± 0.023 MJ (43.9 ± 7.3 M⊕), a radius of 0.639 ± 0.013 RJ (7.16 ± 0.15 R⊕), bulk density of 0.65+0.12-0.11 (cgs), and an orbital period of 18.38818 +0.00085 -0.00084 days. The planet orbits a late F-type star and there are hints of a second non-transiting sub-Saturn mass planet on a ∼71-day orbit. This discovery is significant as warm sub-Saturns are rare, making TOI-257b valuable for future studies on the formation and migration history of similar planetary systems.

Original language	English
Pages (from-to)	3704-3722
Number of pages	19
Journal	Monthly Notices of the Royal Astronomical Society
Volume	502
Issue number	3
DOIs	https://doi.org/10.1093/mnras/staa3960
State	Published - Apr 1 2021
Externally published	Yes

ASJC Scopus Subject Areas

Astronomy and Astrophysics
Space and Planetary Science

Keywords

asteroseismology
planetary systems
stars: individual (TIC 200723869/TOI-257)
techniques: photometric
techniques: radial velocities
techniques: spectroscopic

Access to Document

10.1093/mnras/staa3960

Cite this

Addison, B. C., Wright, D. J., Nicholson, B. A., Cale, B., Mocnik, T., Huber, D., Plavchan, P., Wittenmyer, R. A., Vanderburg, A., Chaplin, W. J., Chontos, A., Clark, J. T., Eastman, J. D., Ziegler, C., Brahm, R., Carter, B. D., Clerte, M., Espinoza, N., Horner, J., ... Themeßl, N. (2021). TOI-257b (HD 19916b): A warm sub-saturn orbiting an evolved F-type star. Monthly Notices of the Royal Astronomical Society, 502(3), 3704-3722. https://doi.org/10.1093/mnras/staa3960

Addison, BC, Wright, DJ, Nicholson, BA, Cale, B, Mocnik, T, Huber, D, Plavchan, P, Wittenmyer, RA, Vanderburg, A, Chaplin, WJ, Chontos, A, Clark, JT, Eastman, JD, Ziegler, C, Brahm, R, Carter, BD, Clerte, M, Espinoza, N, Horner, J, Bentley, J, Jordán, A, Kane, SR, Kielkopf, JF, Laychock, E, Mengel, MW, Okumura, J, Stassun, KG, Bedding, TR, Bowler, BP, Burnelis, A, Blanco-Cuaresma, S, Collins, M, Crossfield, I, Davis, AB, Evensberget, D, Heitzmann, A, Howell, SB, Law, N, Mann, AW, Marsden, SC, Matson, RA, O'Connor, JH, Shporer, A, Stevens, C, Tinney, CG, Tylor, C, Wang, S, Zhang, H, Henning, T, Kossakowski, D, Ricker, G, Sarkis, P, Schlecker, M, Torres, P, Vanderspek, R, Latham, DW, Seager, S, Winn, JN, Jenkins, JM, Mireles, I, Rowden, P, Pepper, J, Daylan, T, Schlieder, JE, Collins, KA, Collins, KI, Tan, TG, Ball, WH, Basu, S, Buzasi, DL, Campante, TL, Corsaro, E, González-Cuesta, L, Davies, GR, De Almeida, L, Do Nascimento, JD, García, RA, Guo, Z, Handberg, R, Hekker, S, Hey, DR, Kallinger, T, Kawaler, SD, Kayhan, C, S. Kuszlewicz, J, Lund, MN, Lyttle, A, Mathur, S, Miglio, A, Mosser, B, Nielsen, MB, Serenelli, AM, Aguirre, VS & Themeßl, N 2021, 'TOI-257b (HD 19916b): A warm sub-saturn orbiting an evolved F-type star', Monthly Notices of the Royal Astronomical Society, vol. 502, no. 3, pp. 3704-3722. https://doi.org/10.1093/mnras/staa3960

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title = "TOI-257b (HD 19916b): A warm sub-saturn orbiting an evolved F-type star",

abstract = "The discovery of a warm sub-Saturn planet, TOI-257b (HD 19916b), is reported, utilizing data from NASA's Transiting Exoplanet Survey Satellite (TESS). The transit signal detected by TESS was confirmed as a planet through radial velocity observations. Analysis of TESS photometry, Minerva-Australis, FEROS, and HARPS radial velocities, alongside asteroseismic data, shows that TOI-257b has a mass of 0.138 ± 0.023 MJ (43.9 ± 7.3 M⊕), a radius of 0.639 ± 0.013 RJ (7.16 ± 0.15 R⊕), bulk density of 0.65+0.12-0.11 (cgs), and an orbital period of 18.38818 +0.00085 -0.00084 days. The planet orbits a late F-type star and there are hints of a second non-transiting sub-Saturn mass planet on a ∼71-day orbit. This discovery is significant as warm sub-Saturns are rare, making TOI-257b valuable for future studies on the formation and migration history of similar planetary systems.",

keywords = "asteroseismology, planetary systems, stars: individual (TIC 200723869/TOI-257), techniques: photometric, techniques: radial velocities, techniques: spectroscopic",

author = "Addison, {Brett C.} and Wright, {Duncan J.} and Nicholson, {Belinda A.} and Bryson Cale and Teo Mocnik and Daniel Huber and Peter Plavchan and Wittenmyer, {Robert A.} and Andrew Vanderburg and Chaplin, {William J.} and Ashley Chontos and Clark, {Jake T.} and Eastman, {Jason D.} and Carl Ziegler and Rafael Brahm and Carter, {Bradley D.} and Mathieu Clerte and N{\'e}stor Espinoza and Jonathan Horner and John Bentley and Andr{\'e}s Jord{\'a}n and Kane, {Stephen R.} and Kielkopf, {John F.} and Emilie Laychock and Mengel, {Matthew W.} and Jack Okumura and Stassun, {Keivan G.} and Bedding, {Timothy R.} and Bowler, {Brendan P.} and Andrius Burnelis and Sergi Blanco-Cuaresma and Michaela Collins and Ian Crossfield and Davis, {Allen B.} and Dag Evensberget and Alexis Heitzmann and Howell, {Steve B.} and Nicholas Law and Mann, {Andrew W.} and Marsden, {Stephen C.} and Matson, {Rachel A.} and O'Connor, {James H.} and Avi Shporer and Catherine Stevens and Tinney, {C. G.} and Christopher Tylor and Songhu Wang and Hui Zhang and Thomas Henning and Diana Kossakowski and George Ricker and Paula Sarkis and Martin Schlecker and Pascal Torres and Roland Vanderspek and Latham, {David W.} and Sara Seager and Winn, {Joshua N.} and Jenkins, {Jon M.} and Ismael Mireles and Pam Rowden and Joshua Pepper and Tansu Daylan and Schlieder, {Joshua E.} and Collins, {Karen A.} and Collins, {Kevin I.} and Tan, {Thiam Guan} and Ball, {Warrick H.} and Sarbani Basu and Buzasi, {Derek L.} and Campante, {Tiago L.} and Enrico Corsaro and L. Gonz{\'a}lez-Cuesta and Davies, {Guy R.} and {De Almeida}, Leandro and {Do Nascimento}, {Jose Dias} and Garc{\'i}a, {Rafael A.} and Zhao Guo and Rasmus Handberg and Saskia Hekker and Hey, {Daniel R.} and Thomas Kallinger and Kawaler, {Steven D.} and Cenk Kayhan and {S. Kuszlewicz}, James and Lund, {Mikkel N.} and Alexander Lyttle and Savita Mathur and Andrea Miglio and Benoit Mosser and Nielsen, {Martin B.} and Serenelli, {Aldo M.} and Aguirre, {Victor Silva} and Nathalie Theme{\ss}l",

note = "Publisher Copyright: {\textcopyright} 2021 2020 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.",

year = "2021",

month = apr,

day = "1",

doi = "10.1093/mnras/staa3960",

language = "English",

volume = "502",

pages = "3704--3722",

number = "3",

}

TY - JOUR

T1 - TOI-257b (HD 19916b)

T2 - A warm sub-saturn orbiting an evolved F-type star

AU - Addison, Brett C.

AU - Wright, Duncan J.

AU - Nicholson, Belinda A.

AU - Cale, Bryson

AU - Mocnik, Teo

AU - Huber, Daniel

AU - Plavchan, Peter

AU - Wittenmyer, Robert A.

AU - Vanderburg, Andrew

AU - Chaplin, William J.

AU - Chontos, Ashley

AU - Clark, Jake T.

AU - Eastman, Jason D.

AU - Ziegler, Carl

AU - Brahm, Rafael

AU - Carter, Bradley D.

AU - Clerte, Mathieu

AU - Espinoza, Néstor

AU - Horner, Jonathan

AU - Bentley, John

AU - Jordán, Andrés

AU - Kane, Stephen R.

AU - Kielkopf, John F.

AU - Laychock, Emilie

AU - Mengel, Matthew W.

AU - Okumura, Jack

AU - Stassun, Keivan G.

AU - Bedding, Timothy R.

AU - Bowler, Brendan P.

AU - Burnelis, Andrius

AU - Blanco-Cuaresma, Sergi

AU - Collins, Michaela

AU - Crossfield, Ian

AU - Davis, Allen B.

AU - Evensberget, Dag

AU - Heitzmann, Alexis

AU - Howell, Steve B.

AU - Law, Nicholas

AU - Mann, Andrew W.

AU - Marsden, Stephen C.

AU - Matson, Rachel A.

AU - O'Connor, James H.

AU - Shporer, Avi

AU - Stevens, Catherine

AU - Tinney, C. G.

AU - Tylor, Christopher

AU - Wang, Songhu

AU - Zhang, Hui

AU - Henning, Thomas

AU - Kossakowski, Diana

AU - Ricker, George

AU - Sarkis, Paula

AU - Schlecker, Martin

AU - Torres, Pascal

AU - Vanderspek, Roland

AU - Latham, David W.

AU - Seager, Sara

AU - Winn, Joshua N.

AU - Jenkins, Jon M.

AU - Mireles, Ismael

AU - Rowden, Pam

AU - Pepper, Joshua

AU - Daylan, Tansu

AU - Schlieder, Joshua E.

AU - Collins, Karen A.

AU - Collins, Kevin I.

AU - Tan, Thiam Guan

AU - Ball, Warrick H.

AU - Basu, Sarbani

AU - Buzasi, Derek L.

AU - Campante, Tiago L.

AU - Corsaro, Enrico

AU - González-Cuesta, L.

AU - Davies, Guy R.

AU - De Almeida, Leandro

AU - Do Nascimento, Jose Dias

AU - García, Rafael A.

AU - Guo, Zhao

AU - Handberg, Rasmus

AU - Hekker, Saskia

AU - Hey, Daniel R.

AU - Kallinger, Thomas

AU - Kawaler, Steven D.

AU - Kayhan, Cenk

AU - S. Kuszlewicz, James

AU - Lund, Mikkel N.

AU - Lyttle, Alexander

AU - Mathur, Savita

AU - Miglio, Andrea

AU - Mosser, Benoit

AU - Nielsen, Martin B.

AU - Serenelli, Aldo M.

AU - Aguirre, Victor Silva

AU - Themeßl, Nathalie

PY - 2021/4/1

Y1 - 2021/4/1

N2 - The discovery of a warm sub-Saturn planet, TOI-257b (HD 19916b), is reported, utilizing data from NASA's Transiting Exoplanet Survey Satellite (TESS). The transit signal detected by TESS was confirmed as a planet through radial velocity observations. Analysis of TESS photometry, Minerva-Australis, FEROS, and HARPS radial velocities, alongside asteroseismic data, shows that TOI-257b has a mass of 0.138 ± 0.023 MJ (43.9 ± 7.3 M⊕), a radius of 0.639 ± 0.013 RJ (7.16 ± 0.15 R⊕), bulk density of 0.65+0.12-0.11 (cgs), and an orbital period of 18.38818 +0.00085 -0.00084 days. The planet orbits a late F-type star and there are hints of a second non-transiting sub-Saturn mass planet on a ∼71-day orbit. This discovery is significant as warm sub-Saturns are rare, making TOI-257b valuable for future studies on the formation and migration history of similar planetary systems.

AB - The discovery of a warm sub-Saturn planet, TOI-257b (HD 19916b), is reported, utilizing data from NASA's Transiting Exoplanet Survey Satellite (TESS). The transit signal detected by TESS was confirmed as a planet through radial velocity observations. Analysis of TESS photometry, Minerva-Australis, FEROS, and HARPS radial velocities, alongside asteroseismic data, shows that TOI-257b has a mass of 0.138 ± 0.023 MJ (43.9 ± 7.3 M⊕), a radius of 0.639 ± 0.013 RJ (7.16 ± 0.15 R⊕), bulk density of 0.65+0.12-0.11 (cgs), and an orbital period of 18.38818 +0.00085 -0.00084 days. The planet orbits a late F-type star and there are hints of a second non-transiting sub-Saturn mass planet on a ∼71-day orbit. This discovery is significant as warm sub-Saturns are rare, making TOI-257b valuable for future studies on the formation and migration history of similar planetary systems.

KW - asteroseismology

KW - planetary systems

KW - stars: individual (TIC 200723869/TOI-257)

KW - techniques: photometric

KW - techniques: radial velocities

KW - techniques: spectroscopic

UR - http://www.scopus.com/inward/record.url?scp=85103487448&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85103487448&partnerID=8YFLogxK

U2 - 10.1093/mnras/staa3960

DO - 10.1093/mnras/staa3960

M3 - Article

AN - SCOPUS:85103487448

SN - 0035-8711

VL - 502

SP - 3704

EP - 3722

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

TOI-257b (HD 19916b): A warm sub-saturn orbiting an evolved F-type star

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Keywords

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