GJ 367b: A dense, ultrashort-period sub-Earth planet transiting a nearby red dwarf star

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Lam, K. W.F.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),Technische Universität Berlin (author)

GJ 367b: A dense, ultrashort-period sub-Earth planet transiting a nearby red dwarf star

Article/chapterEnglish2021

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American Association for the Advancement of Science (AAAS),2021

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LIBRIS-ID:oai:research.chalmers.se:a414d08f-5a9b-4632-a079-9f81f1d62427
https://research.chalmers.se/publication/527620URI
https://doi.org/10.1126/science.aay3253DOI

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Language:English
Summary in:English

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Subject category:ref swepub-contenttype

Notes

Ultrashort-period (USP) exoplanets have orbital periods shorter than 1 day. Precise masses and radii of USP exoplanets could provide constraints on their unknown formation and evolution processes. We report the detection and characterization of the USP planet GJ 367b using high-precision photometry and radial velocity observations. GJ 367b orbits a bright (V-band magnitude of 10.2), nearby, and red (M-type) dwarf star every 7.7 hours. GJ 367b has a radius of 0.718 ± 0.054 Earth-radii and a mass of 0.546 ± 0.078 Earth-masses, making it a sub-Earth planet. The corresponding bulk density is 8.106 ± 2.165 grams per cubic centimeter—close to that of iron. An interior structure model predicts that the planet has an iron core radius fraction of 86 ± 5%, similar to that of Mercury’s interior.

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Csizmadia, SzilárdDeutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Astudillo-Defru, N.Universidad Catolica de la Santisima Concepcion (author)
Bonfils, X.Université Grenoble Alpes,Grenoble Alpes University (author)
Gandolfi, D.Universita degli Studi di Torino,University of Turin (author)
Padovan, SebastianoDeutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),European Organisation for the Exploitation of Meteorological Satellites (author)
Esposito, M.Thüringer Landessternwarte Tautenburg (author)
Hellier, CoelKeele University (author)
Hirano, T.National Institutes of Natural Sciences (NINS),Tokyo Institute of Technology (author)
Livingston, J.H.University of Tokyo, Japan (author)
Murgas, F.Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias (author)
Smith, Alexis M. S.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Collins, Karen A.Harvard-Smithsonian Center for Astrophysics (author)
Mathur, S.Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias (author)
García, R. A.Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA),The French Alternative Energies and Atomic Energy Commission (CEA),Université Paris-Saclay,University Paris-Saclay (author)
Howell, S.B.NASA Ames Research Center (author)
Santos, N. C.Universidade do Porto,University of Porto (author)
Dai, FeiCalifornia Institute of Technology (Caltech) (author)
Ricker, George R.Massachusetts Institute of Technology (MIT) (author)
Vanderspek, Roland K.Massachusetts Institute of Technology (MIT) (author)
Latham, D. W.Harvard-Smithsonian Center for Astrophysics (author)
Seager, S.Massachusetts Institute of Technology (MIT) (author)
Winn, J. N.Princeton University (author)
Jenkins, Jon M.NASA Ames Research Center (author)
Albrecht, SimonÅrhus Universitet,Aarhus University (author)
Almenara, J. M.Université Grenoble Alpes,Grenoble Alpes University (author)
Artigau, E.Université Grenoble Alpes,Grenoble Alpes University (author)
Barragán, O.University Of Oxford (author)
Bouchy, F.Université de Genève,University of Geneva (author)
Cabrera, J.Université Grenoble Alpes,Grenoble Alpes University (author)
Charbonneau, D.Harvard-Smithsonian Center for Astrophysics (author)
Chaturvedi, PriyankaThüringer Landessternwarte Tautenburg (author)
Chaushev, AlexanderTechnische Universität Berlin (author)
Christiansen, Jessie L.California Institute of Technology (Caltech) (author)
Cochran, William D.The University of Texas at Austin, USA (author)
de Meideiros, José R.Universidade Federal do Rio Grande do Norte,Federal University of Rio Grande do Norte (author)
Delfosse, X.Université Grenoble Alpes,Grenoble Alpes University (author)
Diaz, R. F. (author)
Doyon, RenéUniversité de Montréal (author)
Eigmüller, P.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Figueira, P.European Southern Observatory Santiago,Universidade do Porto,University of Porto (author)
Forveille, T.Université Grenoble Alpes,Grenoble Alpes University (author)
Fridlund, Malcolm,1952Chalmers tekniska högskola,Chalmers University of Technology,Universiteit Leiden (UL),Leiden University (UL)(Swepub:cth)malfri (author)
Gaisné, G.Université Grenoble Alpes,Grenoble Alpes University (author)
Goffo, E.Thüringer Landessternwarte Tautenburg,Universita degli Studi di Torino,University of Turin (author)
Georgieva, Iskra,1987Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)iskrag (author)
Grziwa, S.Universität zu Köln,University of Cologne (author)
Guenther, E. W.Thüringer Landessternwarte Tautenburg (author)
Hatzes, A.Thüringer Landessternwarte Tautenburg (author)
Johnson, M.C.Las Cumbres Observatory Global Telescope Network, Inc (author)
Kabath, PetrAcademy of Sciences of the Czech Republic v.v.i (author)
Knudstrup, E.Århus Universitet,Aarhus University (author)
Korth, Judith,1987Chalmers tekniska högskola,Chalmers University of Technology,Universität zu Köln,University of Cologne(Swepub:cth)korth (author)
Lewin, Pablo (author)
Lissauer, Jack J.NASA Ames Research Center,Stanford University (author)
Lovis, C.Université de Genève,University of Geneva (author)
Luque, R.Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias (author)
Melo, C.European Southern Observatory Santiago (author)
Morgan, Edward H.Massachusetts Institute of Technology (MIT) (author)
Morris, RobertNASA Ames Research Center (author)
Mayor, MichelUniversité de Genève,University of Geneva (author)
Narita, NorioUniversity of Tokyo, Japan,Astrobiology Center, Japan,Japan Science and Technology Agency (JST),Instituto de Astrofísica de Canarias (author)
Osborne, H. L.M.University College London (UCL) (author)
Palle, EnricInstituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna (author)
Pepe, FrancescoUniversité de Genève,University of Geneva (author)
Persson, Carina,1964Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)carina64 (author)
Quinn, Samuel N.Harvard-Smithsonian Center for Astrophysics (author)
Rauer, H.Technische Universität Berlin,Freie Universität Berlin,Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Redfield, S.Wesleyan University (author)
Schlieder, Joshua E.NASA Goddard Space Flight Center (author)
Segransan, D.Université de Genève,University of Geneva (author)
Serrano, L. M.Universita degli Studi di Torino,University of Turin (author)
Smith, Jeffrey C.NASA Ames Research Center (author)
Šubjak, J.Czech Academy of Sciences,Univerzita Karlova,Charles University (author)
Twicken, J. D.NASA Ames Research Center (author)
Udry, S.Université de Genève,University of Geneva (author)
Van Eylen, VincentUniversity College London (UCL) (author)
Vezie, Michael L.Massachusetts Institute of Technology (MIT) (author)
Deutsches Zentrums für Luft- und Raumfahrt (DLR)Technische Universität Berlin (creator_code:org_t)

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In:Science: American Association for the Advancement of Science (AAAS)374:6572, s. 1271-12750036-80751095-9203

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By the author/editor: Lam, K. W.F.; Csizmadia, Szilá ...; Astudillo-Defru, ...; Bonfils, X.; Gandolfi, D.; Padovan, Sebasti ...; show more...; Esposito, M.; Hellier, Coel; Hirano, T.; Livingston, J.H.; Murgas, F.; Smith, Alexis M. ...; Collins, Karen A ...; Mathur, S.; García, R. A.; Howell, S.B.; Santos, N. C.; Dai, Fei; Ricker, George R ...; Vanderspek, Rola ...; Latham, D. W.; Seager, S.; Winn, J. N.; Jenkins, Jon M.; Albrecht, Simon; Almenara, J. M.; Artigau, E.; Barragán, O.; Bouchy, F.; Cabrera, J.; Charbonneau, D.; Chaturvedi, Priy ...; Chaushev, Alexan ...; Christiansen, Je ...; Cochran, William ...; de Meideiros, Jo ...; Delfosse, X.; Diaz, R. F.; Doyon, René; Eigmüller, P.; Figueira, P.; Forveille, T.; Fridlund, Malcol ...; Gaisné, G.; Goffo, E.; Georgieva, Iskra ...; Grziwa, S.; Guenther, E. W.; Hatzes, A.; Johnson, M.C.; Kabath, Petr; Knudstrup, E.; Korth, Judith, 1 ...; Lewin, Pablo; Lissauer, Jack J ...; Lovis, C.; Luque, R.; Melo, C.; Morgan, Edward H ...; Morris, Robert; Mayor, Michel; Narita, Norio; Osborne, H. L.M.; Palle, Enric; Pepe, Francesco; Persson, Carina, ...; Quinn, Samuel N.; Rauer, H.; Redfield, S.; Schlieder, Joshu ...; Segransan, D.; Serrano, L. M.; Smith, Jeffrey C ...; Šubjak, J.; Twicken, J. D.; Udry, S.; Van Eylen, Vince ...; Vezie, Michael L ...; show less...

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