TOI-836: A super-Earth and mini-Neptune transiting a nearby K-dwarf
Faith Hawthorn
,
Daniel Bayliss
,
Thomas G. Wilson
,
Andrea Bonfanti
,
Vardan Adibekyan
,
Yann Alibert
,
Sérgio G. Sousa
,
Karen A. Collins
,
Edward M. Bryant
,
Ares Osborn
,
David J. Armstrong
,
Lyu Abe
(1)
,
Jack S. Acton
,
Brett C. Addison
,
Karim Agabi
(1)
,
Roi Alonso
,
Douglas R. Alves
,
Guillem Anglada-Escudé
,
Tamas Bárczy
,
Thomas Barclay
,
David Barrado
,
Susana C. C. Barros
,
Wolfgang Baumjohann
,
Philippe Bendjoya
(1)
,
Willy Benz
,
Allyson Bieryla
,
Xavier Bonfils
(2)
,
François Bouchy
,
Alexis Brandeker
,
Christopher Broeg
,
David J. A. Brown
,
Matthew R. Burleigh
,
Marco Buttu
,
Juan Cabrera
,
Douglas A. Caldwell
,
Sarah L. Casewell
,
David Charbonneau
,
Sébastian Charnoz
(3)
,
Ryan Cloutier
,
Andrew Collier Cameron
,
Kevin I. Collins
,
Dennis M. Conti
,
Nicolas Crouzet
,
Szilárd Czismadia
,
Melvyn B. Davies
,
Magali Deleuil
(4)
,
Elisa Delgado-Mena
,
Laetitia Delrez
,
Olivier D. S. Demangeon
,
Brice-Olivier Demory
,
Georgina Dransfield
,
Xavier Dumusque
,
Jo Ann Egger
,
David Ehrenreich
,
Philipp Eigmüller
,
Anders Erickson
,
Zahra Essack
,
Andrea Fortier
,
Luca Fossati
,
Malcolm Fridlund
,
Maximilian N. Günther
,
Manuel Güdel
,
Davide Gandolfi
,
Harvey Gillard
,
Michaël Gillon
,
Crystal Gnilka
,
Michael R. Goad
,
Robert F. Goeke
,
Tristan Guillot
(1)
,
Andreas Hadjigeorghiou
,
Coel Hellier
,
Beth A. Henderson
,
Kevin Heng
,
Matthew J. Hooton
,
Keith Horne
,
Steve B. Howell
,
Sergio Hoyer
(4)
,
Jonathan M. Irwin
,
James S. Jenkins
,
Jon M. Jenkins
,
Eric L. N. Jensen
,
Stephen R. Kane
,
Alicia Kendall
,
John F. Kielkopf
,
Laszlo L. Kiss
,
Gaia Lacedelli
,
Jacques Laskar
(5)
,
David W. Latham
,
Alain Lecavalier Des Etangs
(6)
,
Adrien Leleu
,
Monika Lendl
,
Jorge Lillo-Box
,
Christophe Lovis
,
Djamel Mékarnia
(1)
,
Bob Massey
,
Tamzin Masters
,
Pierre F. L. Maxted
,
Valerio Nascimbeni
,
Louise D. Nielsen
,
Sean M. O'Brien
,
Göran Olofsson
,
Hugh P. Osborn
,
Isabella Pagano
,
Enric Pallé
,
Carina M. Persson
,
Giampaolo Piotto
,
Peter Plavchan
,
Don Pollacco
,
Didier Queloz
,
Roberto Ragazzoni
,
Heike Rauer
,
Ignasi Ribas
,
George Ricker
,
Damien Ségransan
,
Sébastien Salmon
,
Alexandre Santerne
(4)
,
Nuno C. Santos
,
Gaetano Scandariato
,
François-Xavier Schmider
(1)
,
Richard P. Schwarz
,
Sara Seager
,
Avi Shporer
,
Attila E. Simon
,
Alexis M. S. Smith
,
Gregor Srdoc
,
Manfred Steller
,
Olga Suarez
(1)
,
Gyula M. Szabó
,
Johanna Teske
,
Nicolas Thomas
,
Rosanna H. Tilbrook
,
Amaury H. M. J. Triaud
,
Stéphane Udry
,
Valérie van Grootel
,
Nicholas Walton
,
Sharon X. Wang
,
Peter J. Wheatley
,
Joshua N. Winn
,
Robert A. Wittenmyer
,
Hui Zhang
1
OCA -
Observatoire de la Côte d'Azur
2 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
3 IPGP (UMR_7154) - Institut de Physique du Globe de Paris
4 LAM - Laboratoire d'Astrophysique de Marseille
5 IMCCE - Institut de Mécanique Céleste et de Calcul des Ephémérides
6 IAP - Institut d'Astrophysique de Paris
2 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
3 IPGP (UMR_7154) - Institut de Physique du Globe de Paris
4 LAM - Laboratoire d'Astrophysique de Marseille
5 IMCCE - Institut de Mécanique Céleste et de Calcul des Ephémérides
6 IAP - Institut d'Astrophysique de Paris
Faith Hawthorn
- Function : Author
Daniel Bayliss
- Function : Author
Thomas G. Wilson
- Function : Author
Andrea Bonfanti
- Function : Author
Vardan Adibekyan
- Function : Author
Yann Alibert
- Function : Author
Sérgio G. Sousa
- Function : Author
Karen A. Collins
- Function : Author
Edward M. Bryant
- Function : Author
Ares Osborn
- Function : Author
David J. Armstrong
- Function : Author
Jack S. Acton
- Function : Author
Brett C. Addison
- Function : Author
Roi Alonso
- Function : Author
Douglas R. Alves
- Function : Author
Guillem Anglada-Escudé
- Function : Author
Tamas Bárczy
- Function : Author
Thomas Barclay
- Function : Author
David Barrado
- Function : Author
Susana C. C. Barros
- Function : Author
Wolfgang Baumjohann
- Function : Author
Willy Benz
- Function : Author
Allyson Bieryla
- Function : Author
François Bouchy
- Function : Author
- PersonId : 755523
- ORCID : 0000-0002-7613-393X
- IdRef : 069924120
Alexis Brandeker
- Function : Author
Christopher Broeg
- Function : Author
David J. A. Brown
- Function : Author
Matthew R. Burleigh
- Function : Author
Marco Buttu
- Function : Author
Juan Cabrera
- Function : Author
Douglas A. Caldwell
- Function : Author
Sarah L. Casewell
- Function : Author
David Charbonneau
- Function : Author
Ryan Cloutier
- Function : Author
Andrew Collier Cameron
- Function : Author
Kevin I. Collins
- Function : Author
Dennis M. Conti
- Function : Author
Nicolas Crouzet
- Function : Author
Szilárd Czismadia
- Function : Author
Melvyn B. Davies
- Function : Author
Elisa Delgado-Mena
- Function : Author
Laetitia Delrez
- Function : Author
Olivier D. S. Demangeon
- Function : Author
Brice-Olivier Demory
- Function : Author
Georgina Dransfield
- Function : Author
Xavier Dumusque
- Function : Author
Jo Ann Egger
- Function : Author
David Ehrenreich
- Function : Author
Philipp Eigmüller
- Function : Author
Anders Erickson
- Function : Author
Zahra Essack
- Function : Author
Andrea Fortier
- Function : Author
Luca Fossati
- Function : Author
Malcolm Fridlund
- Function : Author
Maximilian N. Günther
- Function : Author
Manuel Güdel
- Function : Author
Davide Gandolfi
- Function : Author
Harvey Gillard
- Function : Author
Michaël Gillon
- Function : Author
Crystal Gnilka
- Function : Author
Michael R. Goad
- Function : Author
Robert F. Goeke
- Function : Author
Andreas Hadjigeorghiou
- Function : Author
Coel Hellier
- Function : Author
Beth A. Henderson
- Function : Author
Kevin Heng
- Function : Author
Matthew J. Hooton
- Function : Author
Keith Horne
- Function : Author
Steve B. Howell
- Function : Author
Jonathan M. Irwin
- Function : Author
James S. Jenkins
- Function : Author
Jon M. Jenkins
- Function : Author
Eric L. N. Jensen
- Function : Author
Stephen R. Kane
- Function : Author
Alicia Kendall
- Function : Author
John F. Kielkopf
- Function : Author
Laszlo L. Kiss
- Function : Author
Gaia Lacedelli
- Function : Author
David W. Latham
- Function : Author
Adrien Leleu
- Function : Author
Monika Lendl
- Function : Author
Jorge Lillo-Box
- Function : Author
Christophe Lovis
- Function : Author
Bob Massey
- Function : Author
Tamzin Masters
- Function : Author
Pierre F. L. Maxted
- Function : Author
Valerio Nascimbeni
- Function : Author
Louise D. Nielsen
- Function : Author
Sean M. O'Brien
- Function : Author
Göran Olofsson
- Function : Author
Hugh P. Osborn
- Function : Author
Isabella Pagano
- Function : Author
Enric Pallé
- Function : Author
Carina M. Persson
- Function : Author
Giampaolo Piotto
- Function : Author
Peter Plavchan
- Function : Author
Don Pollacco
- Function : Author
Didier Queloz
- Function : Author
Roberto Ragazzoni
- Function : Author
Heike Rauer
- Function : Author
Ignasi Ribas
- Function : Author
George Ricker
- Function : Author
Damien Ségransan
- Function : Author
Sébastien Salmon
- Function : Author
Nuno C. Santos
- Function : Author
Gaetano Scandariato
- Function : Author
Richard P. Schwarz
- Function : Author
Sara Seager
- Function : Author
Avi Shporer
- Function : Author
Attila E. Simon
- Function : Author
Alexis M. S. Smith
- Function : Author
Gregor Srdoc
- Function : Author
Manfred Steller
- Function : Author
Gyula M. Szabó
- Function : Author
Johanna Teske
- Function : Author
Nicolas Thomas
- Function : Author
Rosanna H. Tilbrook
- Function : Author
Amaury H. M. J. Triaud
- Function : Author
Stéphane Udry
- Function : Author
Valérie van Grootel
- Function : Author
Nicholas Walton
- Function : Author
Sharon X. Wang
- Function : Author
Peter J. Wheatley
- Function : Author
Joshua N. Winn
- Function : Author
Robert A. Wittenmyer
- Function : Author
Hui Zhang
- Function : Author
Abstract
We present the discovery of two exoplanets transiting TOI-836 (TIC 440887364) using data from TESS Sector 11 and Sector 38. TOI-836 is a bright (T = 8.5 mag), high proper motion (~200 mas yr-1), low metallicity ([Fe/H]≈-0.28) K-dwarf with a mass of 0.68 ± 0.05 M⊙ and a radius of 0.67 ± 0.01 R⊙. We obtain photometric follow-up observations with a variety of facilities, and we use these data sets to determine that the inner planet, TOI-836 b, is a 1.70 ± 0.07 R⊕ super-Earth in a 3.82-d orbit, placing it directly within the so-called 'radius valley'. The outer planet, TOI-836 c, is a 2.59 ± 0.09 R⊕ mini-Neptune in an 8.60-d orbit. Radial velocity measurements reveal that TOI-836 b has a mass of 4.5 ± 0.9 M⊕, while TOI-836 c has a mass of 9.6 ± 2.6 M⊕. Photometric observations show Transit Timing Variations (TTVs) on the order of 20 min for TOI-836 c, although there are no detectable TTVs for TOI-836 b. The TTVs of planet TOI-836 c may be caused by an undetected exterior planet.
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