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| DOI | 10.1093/MNRAS/STY2360 | ||||
| Año | 2018 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
This paper reports on the validation and mass measurement of K2-263 b, a sub-Neptune orbiting a quiet G9V star. Using K2 data from campaigns C5 and C16, we find this planet to have a period of 50.818947 +/- 0.000094 d and a radius of 2.41 +/- 0.12 R-circle plus. We followed this system with HARPS-N to obtain 67 precise radial velocities (RVs). A combined fit of the transit and radial velocity data reveals that K2-263 b has a mass of 14.8 +/- 3.1 M-circle plus. Its bulk density (5.7(-1.41.6) g cm(-3) ) implies that this planet has a significant envelope of water or other volatiles around a rocky core. K2-263 b likely formed in a similar way as the cores of the four giant planets in our own Solar System, but for some reason, did not accrete much gas. The planetary mass was confirmed by an independent Gaussian process-based fit to both the RVs and the spectroscopic activity indicators. K2-263 b belongs to only a handful of confirmed K2 exoplanets with periods longer than 40 d. It is among the longest periods for a small planet with a precisely determined mass using RVs.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Mortier, A. | Mujer |
Univ St Andrews - Reino Unido
University of St Andrews - Reino Unido |
| 2 | Bonomo, Aldo S. | Hombre |
Istituto Nazionale di Astrofisica - Italia
Istituto Nazionale Di Astrofisica, Rome - Italia |
| 3 | Rajpaul, Vinesh M. | - |
UNIV CAMBRIDGE - Reino Unido
Department of Physics - Reino Unido |
| 4 | Buchhave, L. A. | Hombre |
Tech Univ Denmark - Dinamarca
Danmarks Tekniske Universitet - Dinamarca Technical University of Denmark - Dinamarca |
| 5 | Vanderburg, Andrew | Hombre |
Univ Texas Austin - Estados Unidos
The University of Texas at Austin - Estados Unidos |
| 6 | Zeng, Li | - |
Harvard University - Estados Unidos
|
| 7 | Lopez-Morales, Mercedes | Mujer |
Harvard Smithsonian Ctr Astrophys - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos Harvard University - Estados Unidos |
| 8 | Malavolta, Luca | Hombre |
Istituto Nazionale di Astrofisica - Italia
Univ Padua - Italia Osservatorio Astronomico di Padova - Italia Università degli Studi di Padova - Italia |
| 9 | Cameron, A. | Hombre |
Univ St Andrews - Reino Unido
University of St Andrews - Reino Unido |
| 10 | Dressing, Courtney D. | Mujer |
UNIV CALIF BERKELEY - Estados Unidos
University of California, Berkeley - Estados Unidos |
| 11 | Gu, P. -G. | Hombre |
ESO - Chile
Univ Porto - Portugal European Southern Observatory Santiago - Chile Universidade do Porto, Centro de Astrofísica - Portugal Centro de Astrofísica da Universidade do Porto - Portugal |
| 12 | Nascimbeni, V. | Hombre |
Istituto Nazionale di Astrofisica - Italia
Univ Padua - Italia Osservatorio Astronomico di Padova - Italia Università degli Studi di Padova - Italia |
| 13 | Rice, Ken | - |
UNIV EDINBURGH - Reino Unido
University of Edinburgh, Institute for Astronomy - Reino Unido University of Edinburgh - Reino Unido The University of Edinburgh - Reino Unido |
| 14 | Sozzetti, A. | Hombre |
Istituto Nazionale di Astrofisica - Italia
Istituto Nazionale Di Astrofisica, Rome - Italia |
| 15 | Watson, Christopher A. | Hombre |
Queens Univ Belfast - Reino Unido
Queen's University Belfast - Reino Unido |
| 16 | Affer, Laura | Mujer |
INAF Osservatorio Astron Palermo - Italia
Osservatorio Astronomico di Palermo Guiseppe S. Vaiana - Italia Istituto Nazionale di Astrofisica - Italia Istituto Nazionale Di Astrofisica, Rome - Italia |
| 17 | Bouchy, Francois | Hombre |
Univ Geneva - Suiza
Université de Genève - Suiza Faculty of Science - Suiza |
| 18 | Charbonneau, David | Hombre |
Harvard Smithsonian Ctr Astrophys - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos Harvard University - Estados Unidos |
| 19 | Harutyunyan, Avet | - |
Istituto Nazionale di Astrofisica - España
Fundación Galileo Galilei - España |
| 20 | Haywood, Raphaelle D. | - |
Harvard Smithsonian Ctr Astrophys - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos Harvard University - Estados Unidos |
| 21 | Johnson, John A. | Hombre |
Harvard Smithsonian Ctr Astrophys - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos Harvard University - Estados Unidos |
| 22 | Latham, David W. | Hombre |
Harvard Smithsonian Ctr Astrophys - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos Harvard University - Estados Unidos |
| 23 | Lovis, Christophe | Hombre |
Univ Geneva - Suiza
Université de Genève - Suiza Faculty of Science - Suiza |
| 24 | Martinez Fiorenzano, A. | Hombre |
Istituto Nazionale di Astrofisica - España
Fundación Galileo Galilei - España |
| 25 | Mayor, M. | - |
Univ Geneva - Suiza
Université de Genève - Suiza Faculty of Science - Suiza |
| 26 | Micela, G. | Mujer |
INAF Osservatorio Astron Palermo - Italia
Osservatorio Astronomico di Palermo Guiseppe S. Vaiana - Italia Istituto Nazionale di Astrofisica - Italia Istituto Nazionale Di Astrofisica, Rome - Italia |
| 27 | MOLINARI-LABBE, ESTEBAN RICARDO | Hombre |
INAF Osservatorio Astron Cagliari - Italia
Osservatorio Astronomico di Cagliari - Italia |
| 28 | Motalebi, Fatemeh | Mujer |
Univ Geneva - Suiza
Université de Genève - Suiza Faculty of Science - Suiza |
| 29 | Pepe, Francesco A. | Hombre |
Univ Geneva - Suiza
Université de Genève - Suiza Faculty of Science - Suiza |
| 30 | Piotto, Giampaolo | Hombre |
Istituto Nazionale di Astrofisica - Italia
Univ Padua - Italia Osservatorio Astronomico di Padova - Italia Università degli Studi di Padova - Italia |
| 31 | Phillips, D. | Hombre |
Harvard Smithsonian Ctr Astrophys - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos Harvard University - Estados Unidos |
| 32 | Poretti, Ennio | Hombre |
Istituto Nazionale di Astrofisica - España
Istituto Nazionale di Astrofisica - Italia Fundación Galileo Galilei - España Osservatorio Astronomico di Brera - Italia |
| 33 | Sasselov, Dimitar | Hombre |
Harvard Smithsonian Ctr Astrophys - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos Harvard University - Estados Unidos |
| 34 | Ségransan, Damien | Hombre |
Univ Geneva - Suiza
Université de Genève - Suiza Faculty of Science - Suiza |
| 35 | Celino, J. J. | Hombre |
Univ Geneva - Suiza
Université de Genève - Suiza Faculty of Science - Suiza |
| Fuente |
|---|
| European Union |
| National Aeronautics and Space Administration (NASA) |
| Swiss National Science Foundation |
| STFC |
| Science and Technology Facilities Council |
| National Aeronautics and Space Administration |
| FP7/2007 |
| Seventh Framework Programme |
| John Templeton Foundation |
| NASA Science Mission directorate |
| Emmanuel College, University of Cambridge |
| University of Edinburgh |
| California Institute of Technology |
| NASA Exoplanet Science Institute |
| Jet Propulsion Laboratory |
| Queen's University Belfast |
| University of Geneva |
| Smithsonian Astrophysical Observatory |
| NASA Office of Space Science |
| Kepler Mission under NASA |
| INAF/Frontiera |
| Italian Ministry of Education, University |
| Queen’s University Belfast |
| Scottish Universities Physics Alliance (SUPA) |
| Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung |
| Prodex Program of the Swiss Space Office (SSO) |
| Scottish Universities Physics Alliance |
| Swiss Space Office |
| Université de Genève |
| Harvard University Origins of Life Initiative (HUOLI) |
| Italian National Astrophysical Institute (INAF) |
| Smithsonian Astrophysical Observatory (SAO) |
| University of St Andrews |
| INAF/Frontiera through the 'Progetti Premiali' funding scheme of the Italian Ministry of Education, University, and Research |
| Harvard University Origins of Life Initiative |
| Université de Genève |
| Royal Astronomical Society and Emmanuel College, Cambridge |
| Science AMP; Technology Facilities Council (STFC) |
| Royal Astronomical Society |
| John Temple-ton Foundation |
| Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung |
| Agradecimiento |
|---|
| The HARPS-N project has been funded by the Prodex Program of the Swiss Space Office (SSO), the Harvard University Origins of Life Initiative (HUOLI), the Scottish Universities Physics Alliance (SUPA), the University of Geneva, the Smithsonian Astrophysical Observatory (SAO), and the Italian National Astrophysical Institute (INAF), the University of St Andrews, Queen's University Belfast, and the University of Edinburgh.r The research leading to these results received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement number 313014 (ETAEARTH). VMR acknowledges the Royal Astronomical Society and Emmanuel College, Cambridge, for financial support. This work was performed in part under contract with the California Institute of Technology (Caltech)/Jet Propulsion Laboratory (JPL) funded by NASA through the Sagan Fellowship Program executed by the NASA Exoplanet Science Institute (AV, RDH). LM acknowledges the support by INAF/Frontiera through the 'Progetti Premiali' funding scheme of the Italian Ministry of Education, University, and Research. ACC acknowledges support from the Science & Technology Facilities Council (STFC) consolidated grant number ST/R000824/1. DWL acknowledges partial support from the Kepler mission under NASA Cooperative Agreement NNX13AB58A with the Smithsonian Astrophysical Observatory. CAW acknowledges support by STFC grant ST/P000312/1. Some of this work has been carried out within the framework of the NCCR PlanetS, supported by the Swiss National Science Foundation. This publication was made possible through the support of a grant from the John Templeton Foundation. The opinions expressed are those of the authors and do not necessarily reflect the views of the John Templeton Foundation.r This material is based upon work supported by the National Aeronautics and Space Administration (NASA) under grants No. NNX15AC90G and NNX17AB59G issued through the Exoplanets Research Program. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France, NASA's Astro-physics Data System and the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with NASA under the Exoplanet Exploration Program. Based on observations made with the Italian Telescopio Nazionale Galileo (TNG) operated on the island of La Palma by the Fundacion Galileo Galilei of the INAF (Istituto Nazionale di Astrofisica) at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. This paper includes data collected by the K2 mission. Funding for the K2 mission is provided by the NASA Science Mission directorate. Some of the data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. Support for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX13AC07G and by other grants and contracts. K2-263 was observed as part of the following Guest Programmes: GO5007_LC (PI: Winn), GO5029_LC (PI: Charbonneau), GO5033_LC (PI: Howard), GO5104_LC (PI: Dragomir), GO5106_LC (PI: Jackson), GO5060_LC (PI: Coughlin), GO16009_LC (PI: Charbonneau), GO16011_LC (PI: Fabrycky), GO16015_LC (PI: Boyajian), GO16020_LC (PI: Adams), GO16021_LC (PI: Howard), GO16101_LC (PI: Winn), GO16009_SC (PI: Charbonneau), GO16015_SC (PI: Boyajian), and GO16101_SC (PI: Winn). |
| The HARPS-N project has been funded by the Prodex Program of the Swiss Space Office (SSO), the Harvard University Origins of Life Initiative (HUOLI), the Scottish Universities Physics Alliance (SUPA), the University of Geneva, the Smithsonian Astrophysical Observatory (SAO), and the Italian National Astrophysical Institute (INAF), the University of St Andrews, Queen’s University Belfast, and the University of Edinburgh. |