dc.contributor.author | Adamów, Monika | |
dc.contributor.author | Niedźwiecki, Andrzej | |
dc.contributor.author | Villaver Sobrino, Eva Gloria | |
dc.contributor.author | Nowak, G. | |
dc.contributor.author | Wolszczan, Alex | |
dc.contributor.other | UAM. Departamento de Física Teórica | es_ES |
dc.date.accessioned | 2014-09-29T13:39:23Z | |
dc.date.available | 2014-09-29T13:39:23Z | |
dc.date.issued | 2012-07-20 | |
dc.identifier.citation | The Astrophysical Journal Letters 754.1 (2012): L15 | en_US |
dc.identifier.issn | 2041-8205 (print) | es_ES |
dc.identifier.issn | 2041-8213 (online) | es_ES |
dc.identifier.uri | http://hdl.handle.net/10486/662003 | |
dc.description | The Astrophysical Journal Letters 754.1 (2012): L15 reproduced by permission of the AAS | en_US |
dc.description.abstract | We report the discovery of a unique object, BD+48 740, a lithium overabundant giant with A(Li) = 2.33 ± 0.04 (where A(Li) = log n Li/n H + 12), that exhibits radial velocity (RV) variations consistent with a 1.6 MJ companion in a highly eccentric, e = 0.67 ± 0.17, and extended, a = 1.89AU (P = 771days), orbit. The high eccentricity of the planet is uncommon among planetary systems orbiting evolved stars and so is the high lithium abundance in a giant star. The ingestion by the star of a putative second planet in the system originally in a closer orbit could possibly allow for a single explanation to these two exceptional facts. If the planet candidate is confirmed by future RV observations, it might represent the first example of the remnant of a multiple planetary system recently affected by stellar evolution | en_US |
dc.description.sponsorship | We thank Dr. Nikolai Piskunov for making SME available for us.We thank the HET resident astronomers and telescope operators for continuous support. M.A., A.N., and G.N. were supported by the Polish Ministry of Science and Higher Education grant N N203 510938. A.W. was supported by the NASA grant NNX09AB36G. E.V. acknowledges the support provided by the Spanish Ministry of Science and Innovation (MICINN) under grant AYA2010-20630 and to the Marie Curie FP7-People- RG268111. The HET is a joint project of theUniversity of Texas at Austin, the Pennsylvania State University, Stanford University, Ludwig-Maximilians-Universit¨atM¨unchen, and Georg-August-Universität Göttingen. The HET is named in honor of its principal benefactors, William P. Hobby and Robert E. Eberly. The Center for Exoplanets and Habitable Worlds is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. This research has made extensive use of the SIMBAD database, operated at CDS (Strasbourg, France) and NASA’s Astrophysics Data System Bibliographic Services. This research has made use of the Exoplanet Orbit Database and the Exoplanet Data Explorer at exoplanets.org. | en_US |
dc.format.extent | 5 pag. | es_ES |
dc.format.mimetype | application/pdf | en |
dc.language.iso | eng | en |
dc.publisher | The American Astronomical Society | en_US |
dc.relation.ispartof | The Astrophysical Journal Letters | en_US |
dc.rights | © 2012. The American Astronomical Society. All rights reserved | en_US |
dc.subject.other | Planet-star interactions | en_US |
dc.subject.other | Stars: atmospheres | en_US |
dc.subject.other | Stars: fundamental parameters | en_US |
dc.subject.other | Stars: individual (BD+48 740) | en_US |
dc.subject.other | Stars: late-type | en_US |
dc.subject.other | Planets and satellites | en_US |
dc.title | BD+48 740-Li overabundant giant star with a planet: A case of recent engulfment? | en_US |
dc.type | article | en |
dc.subject.eciencia | Física | es_ES |
dc.relation.publisherversion | http://iopscience.iop.org/2041-8205/754/1/L15/ | es_ES |
dc.identifier.doi | 10.1088/2041-8205/754/1/L15 | es_ES |
dc.identifier.publicationfirstpage | L15 | es_ES |
dc.identifier.publicationissue | 1 | es_ES |
dc.identifier.publicationvolume | 754 | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/FP7/268111 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.rights.accessRights | openAccess | en |
dc.authorUAM | Villaver Sobrino, Eva Gloria (262057) | |
dc.facultadUAM | Facultad de Ciencias | |