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K2-265 b: A transiting rocky super-Earth
| Indexado |
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| DOI | 10.1051/0004-6361/201834073 | ||||
| Año | 2018 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Abstract
We report the discovery of the super-Earth K2-265 b detected with K2 photometry. The planet orbits a bright (V-mag = 11.1) star of spectral type G8V with a period of 2.37 days. We obtained high-precision follow-up radial velocity measurements from HARPS, and the joint Bayesian analysis showed that K2-265 b has a radius of 1.71 +/- 0.11 R-circle plus and a mass of 6.54 +/- 0.84 M-circle plus, corresponding to a bulk density of 7.1 +/- 1.8 g cm(-3). Composition analysis of the planet reveals an Earth-like, rocky interior; this object has a rock mass fraction of similar to 80%. The short orbital period and small radius of the planet puts it below the lower limit of the photoevaporation gap, where the envelope of the planet could have eroded owing to strong stellar irradiation, leaving behind an exposed core. Knowledge of the planet core composition allows us to infer the possible formation and evolution mechanism responsible for its current physical parameters.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Lam, K. W. F. | Mujer |
Univ Warwick - Reino Unido
TECH UNIV BERLIN - Alemania The University of Warwick - Reino Unido University of Warwick - Reino Unido |
| 2 | Santerne, A. | Hombre |
Aix Marseille Univ - Francia
Aix Marseille Université - Francia |
| 3 | Sousa, Sergio G. | Hombre |
Univ Porto - Portugal
Universidade do Porto, Centro de Astrofísica - Portugal Universidade do Porto - Portugal Centro de Astrofísica da Universidade do Porto - Portugal |
| 4 | Vigan, Arthur | Hombre |
Aix Marseille Univ - Francia
Aix Marseille Université - Francia |
| 5 | Armstrong, David A. | Hombre |
Univ Warwick - Reino Unido
The University of Warwick - Reino Unido University of Warwick - Reino Unido |
| 6 | Barros, Susana | Mujer |
Univ Porto - Portugal
Universidade do Porto, Centro de Astrofísica - Portugal Universidade do Porto - Portugal Centro de Astrofísica da Universidade do Porto - Portugal |
| 7 | Brugger, B. | - |
Aix Marseille Univ - Francia
Aix Marseille Université - Francia |
| 8 | Adibekyan, V. | Hombre |
Univ Porto - Portugal
Universidade do Porto, Centro de Astrofísica - Portugal Universidade do Porto - Portugal Centro de Astrofísica da Universidade do Porto - Portugal |
| 9 | Almenara, Jose-Manuel | Hombre |
Univ Geneva - Suiza
Université de Genève - Suiza Faculty of Science - Suiza |
| 10 | Delgado-Mena, Elisa | Mujer |
Univ Porto - Portugal
Universidade do Porto, Centro de Astrofísica - Portugal Universidade do Porto - Portugal Centro de Astrofísica da Universidade do Porto - Portugal |
| 11 | Dumusque, Xavier | Hombre |
Univ Geneva - Suiza
Université de Genève - Suiza Faculty of Science - Suiza |
| 12 | Barrado, D. | Hombre |
Ctr Astrobiol CSIC INTA - España
Centro de Astrobiología (CSIC-INTA) - España |
| 13 | Bayliss, Dan | Hombre |
Univ Warwick - Reino Unido
The University of Warwick - Reino Unido University of Warwick - Reino Unido |
| 14 | Bonomo, Aldo S. | Hombre |
Istituto Nazionale di Astrofisica - Italia
Istituto Nazionale Di Astrofisica, Rome - Italia |
| 15 | Bouchy, Francois | Hombre |
Univ Geneva - Suiza
Université de Genève - Suiza Faculty of Science - Suiza |
| 16 | Brown, D. J. A. | Hombre |
Univ Warwick - Reino Unido
The University of Warwick - Reino Unido University of Warwick - Reino Unido |
| 17 | Ciardi, David R. | Hombre |
CALTECH - Estados Unidos
Aix Marseille Université - Francia California Institute of Technology - Estados Unidos |
| 18 | Deleuil, M. | Mujer |
Aix Marseille Univ - Francia
European Southern Observatory Santiago - Chile Aix Marseille Université - Francia |
| 19 | Demangeon, O. | Hombre |
Univ Porto - Portugal
Aix Marseille Université - Francia Universidade do Porto - Portugal |
| 20 | Rodriguez-Seijo, Andres | Hombre |
Univ Warwick - Reino Unido
Istituto Nazionale di Astrofisica - Italia |
| 21 | Foxell, Emma | Mujer |
Univ Warwick - Reino Unido
The University of Warwick - Reino Unido Osservatorio Astrofisico di Catania - Italia University of Warwick - Reino Unido |
| 22 | Jackman, J. A. G. | Hombre |
Univ Warwick - Reino Unido
The University of Warwick - Reino Unido University of Warwick - Reino Unido |
| 23 | King, G. W. | Hombre |
Univ Warwick - Reino Unido
The University of Warwick - Reino Unido University of Warwick - Reino Unido |
| 24 | Kirk, J. | - |
Univ Warwick - Reino Unido
The University of Warwick - Reino Unido University of Warwick - Reino Unido |
| 25 | Ligi, Roxanne | Mujer |
Aix Marseille Univ - Francia
Aix Marseille Université - Francia |
| 26 | Lillo-Box, J. | Hombre |
ESO - Chile
European Southern Observatory Santiago - Chile |
| 27 | Lopez, T. A. | - |
Aix Marseille Univ - Francia
Aix Marseille Université - Francia |
| 28 | Lovis, Christophe | Hombre |
Univ Geneva - Suiza
Université de Genève - Suiza Faculty of Science - Suiza |
| 29 | Louden, Tom | Hombre |
Univ Warwick - Reino Unido
The University of Warwick - Reino Unido University of Warwick - Reino Unido |
| 30 | D. Nielsen, Louise | Mujer |
Univ Geneva - Suiza
Université de Genève - Suiza Faculty of Science - Suiza |
| 31 | McCormac, James | Hombre |
Univ Warwick - Reino Unido
The University of Warwick - Reino Unido University of Warwick - Reino Unido |
| 32 | Mousis, Olivier | Hombre |
Aix Marseille Univ - Francia
Aix Marseille Université - Francia |
| 33 | Osborn, H. P. | Hombre |
Aix Marseille Univ - Francia
Aix Marseille Université - Francia |
| 34 | Pollacco, Don | Hombre |
Univ Warwick - Reino Unido
The University of Warwick - Reino Unido University of Warwick - Reino Unido |
| 35 | Santos, Nuno C. | Hombre |
Univ Porto - Portugal
Universidade do Porto, Centro de Astrofísica - Portugal Universidade do Porto - Portugal Centro de Astrofísica da Universidade do Porto - Portugal |
| 36 | Celino, J. J. | Hombre |
Univ Geneva - Suiza
Université de Genève - Suiza Faculty of Science - Suiza |
| 37 | Wheatley, Peter J. | Hombre |
Univ Warwick - Reino Unido
The University of Warwick - Reino Unido University of Warwick - Reino Unido |
| Fuente |
|---|
| National Science Foundation |
| Fundação para a Ciência e a Tecnologia |
| FCT |
| European Union |
| European Regional Development Fund |
| FCT - Fundacao para a Ciencia e a Tecnologia |
| STFC |
| Science and Technology Facilities Council |
| Robert Martin Ayers Sciences Fund |
| National Aeronautics and Space Administration |
| Programa Operacional Temático Factores de Competitividade |
| Fundação para a Ciência e a Tecnologia |
| NASA Science Mission directorate |
| H2020 Marie Skłodowska-Curie Actions |
| UK Space Agency |
| Horizon 2020 Framework Programme |
| Instituto Nacional de Ciência e Tecnologia para Excitotoxicidade e Neuroproteção |
| FEDER through COMPETE2020 |
| H2020 Marie Skłodowska-Curie Actions |
| Programa Operacional Temático Factores de Competitividade |
| National Optical Astronomy Observatories |
| Fundo Europeu de Desenvolvimento Regional funds |
| COMPETE2020 |
| PLATO ASI-INAF |
| FEDER - Fundo Europeu de Desenvolvimento Regional funds through the COMPETE 2020 - Programa Operacional Competitividade e Internacionalizacao (POCI) |
| PLATO |
| Instituto Nacional de Ciência e Tecnologia para Excitotoxicidade e Neuroproteção |
| Agradecimiento |
|---|
| We thank the anonymous referee for the helpful comments that improved the manuscript. D.J.A.B. acknowledges support by the UK Space Agency. D.J.A. gratefully acknowledges support from the STFC via an Ernest Rutherford Fellowship (ST/R00384X/1). This work was funded by FEDER - Fundo Europeu de Desenvolvimento Regional funds through the COMPETE 2020 - Programa Operacional Competitividade e Internacionalizacao (POCI), and by Portuguese funds through FCT - Fundacao para a Ciencia e a Tecnologia in the framework of the projects POCI-01-0145-FEDER-028953 and POCI-01-0145-FEDER-032113. N.S. and O.D. also acknowledge the support from FCT and FEDER through COMPETE2020 to grants UID/FIS/04434/2013 and POCI-01-0145-FEDER-007672, PTDC/FIS-AST/1526/2014 and POCI-01-0145-FEDER-016886, and PTDC/FIS-AST/7073/2014 and POCI-01-0145-FEDER-016880. S.G.S acknowledges support from FCT through Investigador FCT contract nr. IF/00028/2014/CP1215/CT0002. S.C.C.B. also acknowledges support from FCT through Investigador FCT contracts IF/01312/2014/CP1215/CT0004. E.D.M. acknowledges the support by the Investigador FCT contract IF/00849/2015/CP1273/CT0003. R.L. has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement n.664931. F.F. acknowledges support from PLATO ASI-INAF contract n.2015-019-R0. This research was made possible through the use of the AAVSO Photometric All-Sky Survey (APASS), funded by the Robert Martin Ayers Sciences Fund. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. This research has made use of NASA's Astrophysics Data System Bibliographic Services. This paper includes data collected by the K2 mission. Funding for the K2 mission is provided by the NASA Science Mission directorate. This research has made use of the Exoplanet Follow-up Observation Program website, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. This work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC; https://www.cosmos.esa.int/web/gaia/dpac/consortium).Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. |
| Acknowledgements. We thank the anonymous referee for the helpful comments that improved the manuscript. D.J.A.B. acknowledges support by the UK Space Agency. D.J.A. gratefully acknowledges support from the STFC via an Ernest Rutherford Fellowship (ST/R00384X/1). This work was funded by FEDER – Fundo Europeu de Desenvolvimento Regional funds through the COMPETE |
