Sökning: WFRF:(Kudo Akihiko) > Exoplanets around L...
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000 | 07807naa a2200913 4500 | |
001 | oai:research.chalmers.se:3ccbb03f-4357-4800-9118-9b902f8915c5 | |
003 | SwePub | |
008 | 180306s2018 | |||||||||||000 ||eng| | |
024 | 7 | a https://doi.org/10.3847/1538-3881/aaa9c12 DOI |
024 | 7 | a https://research.chalmers.se/publication/5012832 URI |
024 | 7 | a https://research.chalmers.se/publication/5027502 URI |
024 | 7 | a https://research.chalmers.se/publication/5010372 URI |
040 | a (SwePub)cth | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a art2 swepub-publicationtype |
072 | 7 | a ref2 swepub-contenttype |
100 | 1 | a Hirano, Teruyukiu Tokyo Institute of Technology4 aut |
245 | 1 0 | a Exoplanets around Low-mass Stars Unveiled by K2 |
264 | c 2018-02-23 | |
264 | 1 | b American Astronomical Society,c 2018 |
338 | a electronic2 rdacarrier | |
520 | a We present the detection and follow-up observations of planetary candidates around low-mass stars observed by the K2 mission. Based on light-curve analysis, adaptive-optics imaging, and optical spectroscopy at low and high resolution (including radial velocity measurements), we validate 16 planets around 12 low-mass stars observed during K2 campaigns 5–10. Among the 16 planets, 12 are newly validated, with orbital periods ranging from 0.96 to 33 days. For one of the planets (K2-151b), we present ground-based transit photometry, allowing us to refine the ephemerides. Combining our K2 M-dwarf planets together with the validated or confirmed planets found previously, we investigate the dependence of planet radius R p on stellar insolation and metallicity [Fe/H]. We confirm that for periods P ≲ 2 days, planets with a radius Rp≳ 2 R⊕ are less common than planets with a radius between 1–2 R⊕. We also see a hint of the “radius valley” between 1.5 and 2 R⊕, which has been seen for close-in planets around FGK stars. These features in the radius/period distribution could be attributed to photoevaporation of planetary envelopes by high-energy photons from the host star, as they have for FGK stars. For the M dwarfs, though, the features are not as well defined, and we cannot rule out other explanations such as atmospheric loss from internal planetary heat sources or truncation of the protoplanetary disk. There also appears to be a relation between planet size and metallicity: the few planets larger than about 3 R⊕ are found around the most metal-rich M dwarfs. | |
650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
653 | a techniques: spectroscopic | |
653 | a techniques: radial velocities | |
653 | a planets and satellites: detection | |
653 | a methods: observational | |
653 | a techniques: photometric | |
653 | a techniques: high angular resolution | |
700 | 1 | a Dai, Feiu Princeton University,Massachusetts Institute of Technology (MIT)4 aut |
700 | 1 | a Gandolfi, D.u Universita degli Studi di Torino,University of Turin4 aut |
700 | 1 | a Fukui, Akihikou National Astronomical Observatory of Japan4 aut |
700 | 1 | a Livingston, John H.u University of Tokyo, Japan4 aut |
700 | 1 | a Miyakawa, Koheiu Tokyo Institute of Technology4 aut |
700 | 1 | a Endl, Michaelu The University of Texas at Austin, USA4 aut |
700 | 1 | a Cochran, William D.u The University of Texas at Austin, USA4 aut |
700 | 1 | a Alonso-Floriano, Francisco J.u Universidad Complutense de Madrid,Complutense University,Universiteit Leiden (UL),Leiden University (UL)4 aut |
700 | 1 | a Kuzuhara, M.u National Astronomical Observatory of Japan,National Institutes of Natural Sciences (NINS)4 aut |
700 | 1 | a Montes, Davidu Universidad Complutense de Madrid,Complutense University4 aut |
700 | 1 | a Ryu, Tsuguruu The Graduate University for Advanced Studies (SOKENDAI),National Astronomical Observatory of Japan4 aut |
700 | 1 | a Albrecht, Simonu Århus Universitet,Aarhus University4 aut |
700 | 1 | a Barragan, Oscaru Universita degli Studi di Torino,University of Turin4 aut |
700 | 1 | a Cabrera, Juanu Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
700 | 1 | a Csizmadia, Szilardu Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
700 | 1 | a Deeg, Hansu Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),Instituto de Astrofísica de Canarias4 aut |
700 | 1 | a Eigmüller, Philippu Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
700 | 1 | a Erikson, Andersu Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
700 | 1 | a Fridlund, Malcolm,d 1952u Universiteit Leiden (UL),Leiden University (UL),Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)malfri |
700 | 1 | a Grziwa, Saschau Universität zu Köln,University of Cologne4 aut |
700 | 1 | a Guenther, Eike W.u Thüringer Landessternwarte Tautenburg4 aut |
700 | 1 | a Hatzes, Artie P.u Thüringer Landessternwarte Tautenburg4 aut |
700 | 1 | a Korth, Judithu Universität zu Köln,University of Cologne4 aut |
700 | 1 | a Kudo, T.u National Astronomical Observatory of Japan4 aut |
700 | 1 | a Kusakabe, Nobuhikou National Astronomical Observatory of Japan,National Institutes of Natural Sciences (NINS)4 aut |
700 | 1 | a Narita, Noriou University of Tokyo, Japan,National Institutes of Natural Sciences (NINS)4 aut |
700 | 1 | a Nespral, Davidu Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias4 aut |
700 | 1 | a Nowak, Grzegorzu Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias4 aut |
700 | 1 | a Pätzold, Martinu Universität zu Köln,University of Cologne4 aut |
700 | 1 | a Palle, Enricu Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna4 aut |
700 | 1 | a Persson, Carina,d 1964u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)carina64 |
700 | 1 | a Prieto-Arranz, Jorgeu Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna4 aut |
700 | 1 | a Rauer, Heikeu Technische Universität Berlin,Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
700 | 1 | a Ribas, I.u Institut d'Estudis Espacials de Catalunya (IEEC),Institute of Space Studies of Catalonia (IEEC)4 aut |
700 | 1 | a Sato, B.u Tokyo Institute of Technology4 aut |
700 | 1 | a Smith, Alexis M. S.u Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
700 | 1 | a Tamura, M.u University of Tokyo, Japan,National Institutes of Natural Sciences (NINS),National Astronomical Observatory of Japan4 aut |
700 | 1 | a Tanaka, Yusukeu University of Tokyo, Japan4 aut |
700 | 1 | a Van Eylen, Vincentu Universiteit Leiden (UL),Leiden University (UL)4 aut |
700 | 1 | a Winn, Joshua N.u Princeton University4 aut |
710 | 2 | a Tokyo Institute of Technologyb Princeton University4 org |
773 | 0 | t Astronomical Journald : American Astronomical Societyg 155:3, s. 127-q 155:3<127-x 1538-3881x 0004-6256 |
856 | 4 | u https://research.chalmers.se/publication/502750/file/502750_Fulltext.pdfx primaryx freey FULLTEXT |
856 | 4 | u https://research.chalmers.se/publication/502750/file/502750_Fulltext.pdf |
856 | 4 8 | u https://doi.org/10.3847/1538-3881/aaa9c1 |
856 | 4 8 | u https://research.chalmers.se/publication/501283 |
856 | 4 8 | u https://research.chalmers.se/publication/502750 |
856 | 4 8 | u https://research.chalmers.se/publication/501037 |
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