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dc.contributor.authorAdamów, Monika
dc.contributor.authorNiedźwiecki, Andrzej
dc.contributor.authorVillaver Sobrino, Eva Gloria 
dc.contributor.authorNowak, G.
dc.contributor.authorWolszczan, Alex
dc.contributor.otherUAM. Departamento de Física Teóricaes_ES
dc.date.accessioned2014-09-29T13:39:23Z
dc.date.available2014-09-29T13:39:23Z
dc.date.issued2012-07-20
dc.identifier.citationThe Astrophysical Journal Letters 754.1 (2012): L15en_US
dc.identifier.issn2041-8205 (print)es_ES
dc.identifier.issn2041-8213 (online)es_ES
dc.identifier.urihttp://hdl.handle.net/10486/662003
dc.descriptionThe Astrophysical Journal Letters 754.1 (2012): L15 reproduced by permission of the AASen_US
dc.description.abstractWe 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 evolutionen_US
dc.description.sponsorshipWe 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.extent5 pag.es_ES
dc.format.mimetypeapplication/pdfen
dc.language.isoengen
dc.publisherThe American Astronomical Societyen_US
dc.relation.ispartofThe Astrophysical Journal Lettersen_US
dc.rights© 2012. The American Astronomical Society. All rights reserveden_US
dc.subject.otherPlanet-star interactionsen_US
dc.subject.otherStars: atmospheresen_US
dc.subject.otherStars: fundamental parametersen_US
dc.subject.otherStars: individual (BD+48 740)en_US
dc.subject.otherStars: late-typeen_US
dc.subject.otherPlanets and satellitesen_US
dc.titleBD+48 740-Li overabundant giant star with a planet: A case of recent engulfment?en_US
dc.typearticleen
dc.subject.ecienciaFísicaes_ES
dc.relation.publisherversionhttp://iopscience.iop.org/2041-8205/754/1/L15/es_ES
dc.identifier.doi10.1088/2041-8205/754/1/L15es_ES
dc.identifier.publicationfirstpageL15es_ES
dc.identifier.publicationissue1es_ES
dc.identifier.publicationvolume754es_ES
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/FP7/268111
dc.type.versioninfo:eu-repo/semantics/publishedVersiones_ES
dc.rights.accessRightsopenAccessen
dc.authorUAMVillaver Sobrino, Eva Gloria (262057)
dc.facultadUAMFacultad de Ciencias


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