TOI-836:a super-Earth and mini-Neptune transiting a nearby K-dwarf
- Hawthorn, Faith
- Bayliss, Daniel
- Wilson, Thomas G
- Bonfanti, Andrea
- Adibekyan, Vardan
- Alibert, Yann
- Sousa, Sérgio G
- Collins, Karen A
- Bryant, Edward M
- Osborn, Ares
- Armstrong, David J
- Abe, Lyu
- Acton, Jack S
- Addison, Brett C
- Agabi, Karim
- Alonso, Roi
- Alves, Douglas R
- Anglada-Escudé, Guillem
- Bárczy, Tamas
- Barclay, Thomas
- Barrado, David
- Barros, Susana C C
- Baumjohann, Wolfgang
- Bendjoya, Philippe
- Benz, Willy
- Bieryla, Allyson
- Bonfils, Xavier
- Bouchy, François
- Brandeker, Alexis
- Broeg, Christopher
- Brown, David J A
- Burleigh, Matthew R
- Buttu, Marco
- Cabrera, Juan
- Caldwell, Douglas A
- Casewell, Sarah L
- Charbonneau, David
- Charnoz, Sébastian
- Cloutier, Ryan
- Cameron, Andrew Collier
- Collins, Kevin I
- Conti, Dennis M
- Crouzet, Nicolas
- Czismadia, Szilárd
- Davies, Melvyn B
- Deleuil, Magali
- Delgado-Mena, Elisa
- Delrez, Laetitia
- Demangeon, Olivier D S
- Demory, Brice-Olivier
- Dransfield, Georgina
- Dumusque, Xavier
- Egger, Jo Ann
- Ehrenreich, David
- Eigmüller, Philipp
- Erickson, Anders
- Essack, Zahra
- Fortier, Andrea
- Fossati, Luca
- Fridlund, Malcolm
- Günther, Maximilian N
- Güdel, Manuel
- Gandolfi, Davide
- Gillard, Harvey
- Gillon, Michaël
- Gnilka, Crystal
- Goad, Michael R
- Goeke, Robert F
- Guillot, Tristan
- Hadjigeorghiou, Andreas
- Hellier, Coel
- Henderson, Beth A
- Heng, Kevin
- Hooton, Matthew J
- Horne, Keith
- Howell, Steve B
- Hoyer, Sergio
- Irwin, Jonathan M
- Jenkins, James S
- Jenkins, Jon M
- Jensen, Eric L N
- Kane, Stephen R
- Kendall, Alicia
- Kielkopf, John F
- Kiss, Laszlo L
- Lacedelli, Gaia
- Laskar, Jacques
- Latham, David W
- Lecavalier Des Etangs, Alain
- Leleu, Adrien
- Lendl, Monika
- Lillo-Box, Jorge
- Lovis, Christophe
- Mékarnia, Djamel
- Massey, Bob
- Masters, Tamzin
- Maxted, Pierre F L
- Nascimbeni, Valerio
- Nielsen, Louise D
- O’Brien, Sean M
- Olofsson, Göran
- Osborn, Hugh P
- Pagano, Isabella
- Pallé, Enric
- Persson, Carina M
- Piotto, Giampaolo
- Plavchan, Peter
- Pollacco, Don
- Queloz, Didier
- Ragazzoni, Roberto
- Rauer, Heike
- Ribas, Ignasi
- Ricker, George
- Ségransan, Damien
- Salmon, Sébastien
- Santerne, Alexandre
- Santos, Nuno C
- Scandariato, Gaetano
- Schmider, François-Xavier
- Schwarz, Richard P
- Seager, Sara
- Shporer, Avi
- Simon, Attila E
- Smith, Alexis M S
- Srdoc, Gregor
- Steller, Manfred
- Suarez, Olga
- Szabó, Gyula M
- Teske, Johanna
- Thomas, Nicolas
- Tilbrook, Rosanna H
- Triaud, Amaury H M J
- Udry, Stéphane
- Van Grootel, Valérie
- Walton, Nicholas
- Wang, Sharon X
- Wheatley, Peter J
- Winn, Joshua N
- Wittenmyer, Robert A
- Zhang, Hui
DOIAbstract
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 day 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 day 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...
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