TOI-836: A super-Earth and mini-Neptune transiting a nearby K-dwarf
Article
Hawthorn, Faith, Bayliss, Daniel, Wilson, Thomas, Bonfanti, Andrea, Adibekyan, Vardan, Alibert, Yann, Sousa, Sergio G., Collins, Karen A., Bryant, Edward M., Osborn, Ares, Armstrong, David J., Abe, Lyu, Acton, Jack S., Agabi, Karim, Addison, Brett C., Alonso, Roi, Alves, Douglas R., Anglada-Escude, Guillem, Barczy, Tamas, ..., Zhang, Hui. 2023. "TOI-836: A super-Earth and mini-Neptune transiting a nearby K-dwarf." Monthly Notices of the Royal Astronomical Society. 520 (3), pp. 3649-3668. https://doi.org/10.1093/mnras/stad306
Article Title | TOI-836: A super-Earth and mini-Neptune transiting a nearby K-dwarf |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Hawthorn, Faith, Bayliss, Daniel, Wilson, Thomas, Bonfanti, Andrea, Adibekyan, Vardan, Alibert, Yann, Sousa, Sergio G., Collins, Karen A., Bryant, Edward M., Osborn, Ares, Armstrong, David J., Abe, Lyu, Acton, Jack S., Agabi, Karim, Addison, Brett C., Alonso, Roi, Alves, Douglas R., Anglada-Escude, Guillem, Barczy, Tamas, Barclay, Thomas, Barrado, David, Barros, Susana C.C., Baumjohann, Wolfgang, Bendjoya, Philippe, Benz, Willy, Bieryla, Allyson, Bonfils, Xavier, Bouchy, Francois, Brandeker, Alexis, Broeg, Christopher, Brown, David J.A., Burleigh, Matthew R., Buttu, Marco, Cabrera, Juan, Caldwell, Douglas A., Casewell, Sarah L., Charbonneau, David, Charnoz, Sebastien, Cloutier, Ryan, Collier Cameron, A., Collins, Kevin, Conti, Dennis, Crouzet, Nicolas, Czismadia, Szilard, Davies, Melvyn B., Deleuil, Magali, Delgado-Mena, Eliza, Delrez, Laetitia, Demangeon, Olivier D.S., Demory, Brice-Olivier, Dransfield, Georgina, Dumusque, Xavier, Egger, Jo Ann, Ehrenreich, David, Eigmuller, Philipp, Erikson, Anders, Essack, Zahra, Fortier, Andrea, Fossati, Luca, Fridlund, Malcolm, Gunther, Maximilian N., Gudel, Manuel, Gandolfi, Davide, Gillard, Harvard, Gillon, Michael, 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 J., Jensen, Eric L.N., Kane, Stephen R., Kendall, Alicia, Kielkopf, John F., Kiss, Laszlo L., Lacedelli, Gaia, Laskar, Jacques, Latham, David W., Cavalier des Etangs, Alain, Leleu, Adrien, Lendl, Monika, Lillo-Box, Jorge, Lovis, Christophe, Mekarnia, Djamel, Massey, Bob, Masters, Tamzin, Maxted, Pierre F. L., Nascimbeni, Valerio, Nielsen, Louise D., O'Brien, Sean, Olofsson, Goran, Osborn, Hugh P., Pagano, Isabella, Palle, Enric, Persson, Carina M., Piotto, Giampaolo, Plavchan, Peter, Pollacco, Don, Queloz, Didier, Ragazzoni, Roberto, Rauer, Heike, Ribas, Ignasi, Ricker, George, Segransan, Damien, Salmon, Sebastien, Santerne, Alexandre, Santos, Nuno C., Scandariato, Gaetano, Schmider, Francois-Xavier, Schwarz, Richard P., Seager, Sara, Shporer, Avi, Simon, Attilla E., Smith, Alexis M. S., Srdoc, Gregor, Steller, Manfred, Suarez, Olga, Szabo, Gyula M., Teske, Johanna, Thomas, Nicolas, Tilbrook, Rosanna H., Triaud, Amaury H. M. J., Udry, Stephane, Van Grootel, Valerie, Walton, Nicholas, Wang, Sharon X., Wheatley, Peter J., Winn, Joshua N., Wittenmyer, Robert A. and Zhang, Hui |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 520 (3), pp. 3649-3668 |
Number of Pages | 20 |
Year | 2023 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stad306 |
Web Address (URL) | https://academic.oup.com/mnras/article/520/3/3649/7033445 |
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. © 2023 Oxford University Press. All rights reserved. |
Keywords | planets and satellites: detection; techniques: photometric; techniques: radial velocities; stars: individual: TOI-836 (TIC 440887364, GAIA EDR3 6230733559097425152) |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2023, The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | University of Warwick, United Kingdom |
University of St Andrews, United Kingdom | |
Austrian Academy of Sciences, Austria | |
University of Porto, Portugal | |
University of Bern, Switzerland | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Cote d'Azur University, France | |
University of Leicester, United Kingdom | |
Centre for Astrophysics | |
Institute of Astrophysics of the Canary Islands, Spain | |
University of La Laguna, Spain | |
University of Chile, Chile | |
Institute of Space Studies of Catalonia (IEEC), Spain | |
Admatis, Hungary | |
NASA Goddard Space Flight Center, United States | |
University of Maryland, United States | |
Spanish Astrobiology Center, Spain | |
Cote d'Azur Observatory, France | |
Grenoble Alpes University, France | |
University of Geneva, Switzerland | |
Stockholm University, Sweden | |
National Antarctic Research Program, Italy | |
German Aerospace Center (DLR), Germany | |
SETI Institute, United States | |
University of Paris, France | |
George Mason University, United States | |
American Association of Variable Star Observers, United States | |
European Space Research and Technology Centre (ESTEC), Netherlands | |
Lund University, Sweden | |
Aix-Marseille University, France | |
University of Liege, Belgium | |
University of Birmingham, United Kingdom | |
Massachusetts Institute of Technology, United States | |
University of Leiden, Netherlands | |
Chalmers University of Technology, Sweden | |
University of Vienna, Austria | |
University of Turin, Italy | |
NASA Ames Research Center, United States | |
NASA Exoplanet Science Institute, United States | |
Keele University, United Kingdom | |
University of Cambridge, United Kingdom | |
Diego Portales University, Chile | |
Swarthmore College, United States | |
University of California, United States | |
University of Louisville, United States | |
Konkoly Observatory, Hungary | |
INAF - Astronomical Observatory of Padova, Italy | |
Sorbonne University, France | |
Pierre and Marie Curie University, France | |
Villa ‘39 Observatory, United States | |
European Southern Observatory (ESO), Germany | |
Queen's University Belfast, United Kingdom | |
INAF - Catania Astrophysical Observatory, Italy | |
ETH Zurich, Switzerland | |
University of Padova, Italy | |
Technical University of Berlin, Germany | |
Free University of Berlin, Germany | |
Institute of Space Sciences, Spain | |
Patashnick Voorheesville Observatory, United States | |
Kotizarovci Observatory, Croatia | |
ELTE Gothard Astrophysical Observatory, Hungary | |
Carnegie Institution for Science, United States | |
Tsinghua University, China | |
Princeton University, United States | |
Shanghai Astronomical Observatory, China |
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