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dc.contributor.authorDe Lee, Nathan M.pt_BR
dc.contributor.authorGe, Jianpt_BR
dc.contributor.authorCrepp, Justin R.pt_BR
dc.contributor.authorEastman, Jasonpt_BR
dc.contributor.authorEsposito, Massimilianopt_BR
dc.contributor.authorFemenía Castellá, B.pt_BR
dc.contributor.authorFleming, S.W.pt_BR
dc.contributor.authorGaudi, B. S.pt_BR
dc.contributor.authorGhezzi, Luanpt_BR
dc.contributor.authorGonzález Hernández, Jonay I.pt_BR
dc.contributor.authorLee, Brian L.pt_BR
dc.contributor.authorStassun, Keivan G.pt_BR
dc.contributor.authorWisniewski, J.P.pt_BR
dc.contributor.authorWood-Vasey, W.M.pt_BR
dc.contributor.authorAgol, Ericpt_BR
dc.contributor.authorAllende Prieto, Carlospt_BR
dc.contributor.authorBarnes, Rorypt_BR
dc.contributor.authorBizyaev, D.pt_BR
dc.contributor.authorCargile, Phillip A.pt_BR
dc.contributor.authorChang, Liangpt_BR
dc.contributor.authorCosta, Luiz N. dapt_BR
dc.contributor.authorMello, Gustavo Frederico Porto dept_BR
dc.contributor.authorFerreira, Letícia D.pt_BR
dc.contributor.authorGary, Bruce L.pt_BR
dc.contributor.authorHebb, Lesliept_BR
dc.contributor.authorHoltzman, J.A.pt_BR
dc.contributor.authorLiu, Jianpt_BR
dc.contributor.authorMa, Bopt_BR
dc.contributor.authorMack, C. E.pt_BR
dc.contributor.authorMahadevan, Suvrathpt_BR
dc.contributor.authorMaia, Marcio Antonio Geimbapt_BR
dc.contributor.authorNguyen, D.C.pt_BR
dc.contributor.authorOravetz, Audreypt_BR
dc.contributor.authorOravetz, Daniel J.pt_BR
dc.contributor.authorPaegert, Martinpt_BR
dc.contributor.authorPan, K.pt_BR
dc.contributor.authorPepper, J.pt_BR
dc.contributor.authorMalanushenko, E.pt_BR
dc.contributor.authorMalanushenko, V.pt_BR
dc.contributor.authorRebolo, Rafaelpt_BR
dc.contributor.authorSantiago, Basilio Xavierpt_BR
dc.contributor.authorSchneider, D.P.pt_BR
dc.contributor.authorBradley, Alaina C. Sheldenpt_BR
dc.contributor.authorWan, Xiaokept_BR
dc.contributor.authorWang, Jipt_BR
dc.contributor.authorZhao, Bopt_BR
dc.date.accessioned2014-12-12T02:15:55Zpt_BR
dc.date.issued2013pt_BR
dc.identifier.issn0004-6256pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/108158pt_BR
dc.description.abstractWe describe the discovery of a likely brown dwarf (BD) companion with a minimum mass of 31.7 ± 2.0 MJup to GSC 03546-01452 from the MARVELS radial velocity survey, which we designate as MARVELS-6b. For reasonable priors, our analysis gives a probability of 72% that MARVELS-6b has a mass below the hydrogen-burning limit of 0.072M , and thus it is a high-confidence BDcompanion. It has amoderately long orbital period of 47.8929+0.0063 −0.0062 days with a low eccentricity of 0.1442+0.0078 −0.0073, and a semi-amplitude of 1644+12 −13 m s−1. Moderate resolution spectroscopy of the host star has determined the following parameters: Teff = 5598 ± 63, log g = 4.44 ± 0.17, and [Fe/H] = +0.40 ± 0.09. Based upon these measurements, GSC 03546-01452 has a probable mass and radius of M∗ = 1.11±0.11M and R∗ = 1.06±0.23R with an age consistent with less than ∼6 Gyr at a distance of 219 ± 21 pc from the Sun. Although MARVELS-6b is not observed to transit, we cannot definitively rule out a transiting configuration based on our observations. There is a visual companion detected with Lucky Imaging at 7. 7 from the host star, but our analysis shows that it is not bound to this system. The minimum mass of MARVELS-6b exists at the minimum of the mass functions for both stars and planets, making this a rare object even compared to other BDs. It also exists in an underdense region in both period/eccentricity and metallicity/eccentricity space.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofThe Astronomical journal. Vol. 145, no. 6 (June 2013), 155, 15 p.pt_BR
dc.rightsOpen Accessen
dc.subjectBrown dwarfsen
dc.subjectEstrelas binariaspt_BR
dc.subjectEspectros estelarespt_BR
dc.subjectStars: individual (GSC 03546-01452)en
dc.subjectAnãs marronspt_BR
dc.subjectMassa estelarpt_BR
dc.subjectMovimento estelarpt_BR
dc.subjectRotacao estelarpt_BR
dc.subjectDimensões estelarespt_BR
dc.titleVery low mass stellar and substellar companions to solar-like stars from MARVELS. V. A low eccentricity brown dwarf from the driest part of the desert, marvels-6bpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000900790pt_BR
dc.type.originEstrangeiropt_BR


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