TOI-836: A super-Earth and mini-Neptune transiting a nearby K-dwarf

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MARC

Hawthorn, F.The University of Warwick,University of Warwick (author)

TOI-836: A super-Earth and mini-Neptune transiting a nearby K-dwarf

Article/chapterEnglish2023

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2023-02-09
Oxford University Press (OUP),2023
electronicrdacarrier

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LIBRIS-ID:oai:research.chalmers.se:0d7fb2e9-739b-4223-98ff-12a29012fbd5
https://doi.org/10.1093/mnras/stad306DOI
https://research.chalmers.se/publication/535897URI
https://lup.lub.lu.se/record/e2cd1482-559f-4441-a5c4-1b7f1288c516URI
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-230314URI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype
Subject category:ref swepub-contenttype

Notes

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.

Subject headings and genre

NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
planets and satellites: detection
techniques: radial velocities
stars: individual: TOI-836 (TIC 440887364, GAIA EDR3 6230733559097425152)
techniques: photometric
planets and satellites: detection
stars: individual: TOI-836 (TIC 440887364, GAIA EDR3 6230733559097425152)
techniques: photometric
techniques: radial velocities
Earth (planet)
Photometry
Planets
Satellites
Exo-planets
Neptune
Photometrics
Planets and satellites: detections
Star: individual: TOI-836 (TIC 440887364, GAIA EDR3 6230733559097425152)
Stars: individual: proxima Centauri
Techniques: photometric
Techniques: radial velocities
Timing variations
Transit timing
Orbits

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Davies, M.B.Lund University,Lunds universitet,Matematik (naturvetenskapliga fakulteten),Matematikcentrum,Institutioner vid LTH,Lunds Tekniska Högskola,LU profilområde: Naturlig och artificiell kognition,Lunds universitets profilområden,Mathematics (Faculty of Sciences),Centre for Mathematical Sciences,Departments at LTH,Faculty of Engineering, LTH,LU Profile Area: Natural and Artificial Cognition,Lund University Profile areas(Swepub:lu)astr-mda (author)
Wilson, T.G.University of St Andrews (author)
Bonfanti, A. (author)
Adibekyan, V.Universidade do Porto,University of Porto (author)
Alibert, Y.Universität Bern,University of Bern (author)
Sousa, S. G.Universidade do Porto,University of Porto (author)
Collins, K. A.Harvard-Smithsonian Center for Astrophysics (author)
Bryant, E.The University of Warwick (author)
Osborn, A.The University of Warwick (author)
Armstrong, D. J.The University of Warwick (author)
Abe, L.Observatoire de la Cote d'Azur (author)
Acton, J.S.University Of Leicester (author)
Addison, Brett CUniversity of Southern Queensland (author)
Agabi, KarimObservatoire de la Cote d'Azur (author)
Alonso, R.Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias (author)
Alves, Douglas R.Universidad de Chile (UCH),University of Chile (UCH) (author)
Anglada Escude´, G.Institut d'Estudis Espacials de Catalunya (IEEC),Institute of Space Studies of Catalonia (IEEC),Institut de Ciències de l'Espai (ICE) - CSIC,Institute of Space Sciences (ICE) - CSIC (author)
Bárczy, T. (author)
Barclay, ThomasNASA Goddard Space Flight Center,University of Maryland (author)
Barrado, D.Centro de Astrobiologia (CAB) (author)
Barros, S.C.C.Universidade do Porto,University of Porto (author)
Baumjohann, W. (author)
Bendjoya, PhilippeObservatoire de la Cote d'Azur (author)
Benz, W.Universität Bern,University of Bern (author)
Bieryla, AllysonHarvard-Smithsonian Center for Astrophysics (author)
Bonfils, X. (author)
Bouchy, FrançoisUniversité de Genève,University of Geneva (author)
Brandeker, Alexis,1974-Stockholms universitet,Institutionen för astronomi(Swepub:su)alexis (author)
Broeg, C.Universität Bern,University of Bern (author)
Brown, David J.A.The University of Warwick (author)
Burleigh, MattUniversity Of Leicester (author)
Buttu, M. (author)
Cabrera, JuanDeutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Caldwell, D. A.NASA Ames Research Center (author)
Casewell, SarahUniversity Of Leicester (author)
Charbonneau, D.Harvard-Smithsonian Center for Astrophysics (author)
Charnoz, S.Institut de Physique du Globe de Paris (author)
Cloutier, R.Harvard-Smithsonian Center for Astrophysics (author)
Cameron, A. CollierUniversity of St Andrews (author)
Collins, K. I.George Mason University (author)
Conti, D. (author)
Crouzet, N.European Space Research and Technology Centre (ESA ESTEC) (author)
Czismadia, SzilárdDeutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Davies, M. B.Lunds universitet,Lund University (author)
Deleuil, M.Laboratoire d'Astrophysique de Marseille (author)
Delgado Mena, E.Universidade do Porto,University of Porto (author)
Delrez, L.Universite de Liège,University of Liège (author)
Demangeon, O.Universidade do Porto,University of Porto (author)
Demory, B.O.Universität Bern,University of Bern (author)
Dransfield, GeorginaUniversity of Birmingham (author)
Dumusque, X.Université de Genève,University of Geneva (author)
Egger, J. A.Universität Bern,University of Bern (author)
Ehrenreich, D.Université de Genève,University of Geneva (author)
Eigmüller, P.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Erickson, AndersDeutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Essack, ZahraMassachusetts Institute of Technology (MIT) (author)
Fortier, A.Universität Bern,University of Bern (author)
Fossati, L. (author)
Fridlund, Malcolm,1952Chalmers tekniska högskola,Chalmers University of Technology,Universiteit Leiden (UL),Leiden University (UL)(Swepub:cth)malfri (author)
Günther, Maximilian N.European Space Research and Technology Centre (ESA ESTEC) (author)
Gudel, M.Universität Wien,University of Vienna (author)
Gandolfi, D.Universita degli Studi di Torino,University of Turin (author)
Gillard, HarveyThe University of Warwick (author)
Gillon, MichaëlUniversite de Liège,University of Liège (author)
Gnilka, CrystalNASA Ames Research Center,National Aeronautics and Space Administration (NASA) (author)
Goad, M.R.University Of Leicester (author)
Goeke, RobertMassachusetts Institute of Technology (MIT) (author)
Guillot, T.Observatoire de la Cote d'Azur (author)
Hadjigeorghiou, A.The University of Warwick (author)
Hellier, CoelKeele University (author)
Henderson, B.University Of Leicester (author)
Heng, KevinThe University of Warwick,Universität Bern,University of Bern (author)
Hooton, M.J.University Of Cambridge,Universität Bern,University of Bern (author)
Horne, KeithUniversity of St Andrews (author)
Howell, S. B.NASA Ames Research Center (author)
Hoyer, S.Laboratoire d'Astrophysique de Marseille (author)
Irwin, J. M.Harvard-Smithsonian Center for Astrophysics (author)
Jenkins, James S.Universidad Diego Portales,Diego Portales University,Centro de Astrofísica y Tecnologías Afines (CATA), (author)
Jenkins, Jon M.NASA Ames Research Center (author)
Jensen, Eric L.N.Swarthmore College (author)
Kane, S. R.University of California (author)
Kendall, AliciaUniversity Of Leicester (author)
Kielkopf, J. F.University of Louisville (author)
Kiss, L.L.Magyar Tudomanyos Akademia,Hungarian Academy of Sciences,Eötvös Loránd University (ELTE) (author)
Lacedelli, G.Istituto nazionale di astrofisica (INAF) (author)
Laskar, J.Observatoire de Paris,Paris Observatory (author)
Latham, D. W.Harvard-Smithsonian Center for Astrophysics (author)
des Etangs, A. L.Institut d 'Astrophysique de Paris (author)
Leleu, A.Université de Genève,University of Geneva,Universität Bern,University of Bern (author)
Lendl, M.Université de Genève,University of Geneva (author)
Lillo-Box, J.Centro de Astrobiologia (CAB) (author)
Lovis, C.Université de Genève,University of Geneva (author)
Mékarnia, DjamelObservatoire de la Cote d'Azur (author)
Massey, Bob (author)
Masters, TamzinThe University of Warwick (author)
Maxted, P.Keele University (author)
Nascimbeni, ValerioIstituto nazionale di astrofisica (INAF) (author)
Nielsen, L. D.European Southern Observatory (ESO) (author)
O’Brien, Sean M.Queen's University Belfast (author)
Zhang, H.Shanghai Astronomical Observatory, Chinese Academy of Sciences (author)
Olofsson, Göran,1944-Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)olofsson (author)
The University of WarwickUniversity of Warwick (creator_code:org_t)
et al.

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In:Monthly Notices of the Royal Astronomical Society: Oxford University Press (OUP)520:3, s. 3649-36680035-87111365-2966

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By the author/editor: Hawthorn, F.; Davies, M.B.; Wilson, T.G.; Bonfanti, A.; Adibekyan, V.; Alibert, Y.; show more...; Sousa, S. G.; Collins, K. A.; Bryant, E.; Osborn, A.; Armstrong, D. J.; Abe, L.; Acton, J.S.; Addison, Brett C; Agabi, Karim; Alonso, R.; Alves, Douglas R ...; Anglada Escude&a ...; Bárczy, T.; Barclay, Thomas; Barrado, D.; Barros, S.C.C.; Baumjohann, W.; Bendjoya, Philip ...; Benz, W.; Bieryla, Allyson; Bonfils, X.; Bouchy, François; Brandeker, Alexi ...; Broeg, C.; Brown, David J.A ...; Burleigh, Matt; Buttu, M.; Cabrera, Juan; Caldwell, D. A.; Casewell, Sarah; Charbonneau, D.; Charnoz, S.; Cloutier, R.; Cameron, A. Coll ...; Collins, K. I.; Conti, D.; Crouzet, N.; Czismadia, Szilá ...; Davies, M. B.; Deleuil, M.; Delgado Mena, E.; Delrez, L.; Demangeon, O.; Demory, B.O.; Dransfield, Geor ...; Dumusque, X.; Egger, J. A.; Ehrenreich, D.; Eigmüller, P.; Erickson, Anders; Essack, Zahra; Fortier, A.; Fossati, L.; Fridlund, Malcol ...; Günther, Maximil ...; Gudel, M.; Gandolfi, D.; Gillard, Harvey; Gillon, Michaël; Gnilka, Crystal; Goad, M.R.; Goeke, Robert; Guillot, T.; Hadjigeorghiou, ...; Hellier, Coel; Henderson, B.; Heng, Kevin; Hooton, M.J.; Horne, Keith; Howell, S. B.; Hoyer, S.; Irwin, J. M.; Jenkins, James S ...; Jenkins, Jon M.; Jensen, Eric L.N ...; Kane, S. R.; Kendall, Alicia; Kielkopf, J. F.; Kiss, L.L.; Lacedelli, G.; Laskar, J.; Latham, D. W.; des Etangs, A. L ...; Leleu, A.; Lendl, M.; Lillo-Box, J.; Lovis, C.; Mékarnia, Djamel; Massey, Bob; Masters, Tamzin; Maxted, P.; Nascimbeni, Vale ...; Nielsen, L. D.; O’Brien, Sean M.; Zhang, H.; Olofsson, Göran, ...; show less...

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