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dc.contributor.authorJiang, Pengpt_BR
dc.contributor.authorGe, Jianpt_BR
dc.contributor.authorCargile, Phillip A.pt_BR
dc.contributor.authorCrepp, Justin R.pt_BR
dc.contributor.authorDe Lee, Nathan M.pt_BR
dc.contributor.authorMello, Gustavo Frederico Porto dept_BR
dc.contributor.authorEsposito, Massimilianopt_BR
dc.contributor.authorFerreira, Letícia D.pt_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.authorHebb, Lesliept_BR
dc.contributor.authorLee, Brian L.pt_BR
dc.contributor.authorMa, Bopt_BR
dc.contributor.authorStassun, Keivan G.pt_BR
dc.contributor.authorWang, Jipt_BR
dc.contributor.authorWisniewski, J.P.pt_BR
dc.contributor.authorAgol, Ericpt_BR
dc.contributor.authorBizyaev, D.pt_BR
dc.contributor.authorBrewington, Howard J.pt_BR
dc.contributor.authorChang, Liangpt_BR
dc.contributor.authorCosta, Luiz N. dapt_BR
dc.contributor.authorEastman, Jasonpt_BR
dc.contributor.authorEbelke, Garrett L.pt_BR
dc.contributor.authorGary, Bruce L.pt_BR
dc.contributor.authorKane, Stephen R.pt_BR
dc.contributor.authorLi, Ruipt_BR
dc.contributor.authorLiu, Jianpt_BR
dc.contributor.authorMahadevan, Suvrathpt_BR
dc.contributor.authorMaia, Marcio Antonio Geimbapt_BR
dc.contributor.authorMalanushenko, V.pt_BR
dc.contributor.authorMalanushenko, E.pt_BR
dc.contributor.authorMuna, Demitript_BR
dc.contributor.authorNguyen, D.C.pt_BR
dc.contributor.authorOgando, Ricardo L.C.pt_BR
dc.contributor.authorOravetz, Audreypt_BR
dc.contributor.authorOravetz, Daniel J.pt_BR
dc.contributor.authorPan, K.pt_BR
dc.contributor.authorPepper, J.pt_BR
dc.contributor.authorPaegert, Martinpt_BR
dc.contributor.authorAllende Prieto, Carlospt_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.authorSivarani, Thirupathipt_BR
dc.contributor.authorSnedden, S.A.pt_BR
dc.contributor.authorVan Eyken, Julian C.pt_BR
dc.contributor.authorWan, Xiaokept_BR
dc.contributor.authorWeaver, Benjamin A.pt_BR
dc.contributor.authorZhao, Bopt_BR
dc.date.accessioned2014-12-12T02:16:14Zpt_BR
dc.date.issued2013pt_BR
dc.identifier.issn0004-6256pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/108178pt_BR
dc.description.abstractWe report the discovery of a candidate brown dwarf (BD) or a very low mass stellar companion (MARVELS-5b) to the star HIP 67526 from the Multi-object Apache point observatory Radial Velocity Exoplanet Large-area Survey (MARVELS). The radial velocity curve for this object contains 31 epochs spread over 2.5 yr.OurKeplerian fit, using a Markov Chain Monte Carlo approach, reveals that the companion has an orbital period of 90.2695+0.0188 −0.0187 days, an eccentricity of 0.4375±0.0040, and a semi-amplitude of 2948.14+16.65 −16.55 m s−1. Using additional high-resolution spectroscopy, we find the host star has an effective temperature Teff = 6004 ± 34 K, a surface gravity log g (cgs) = 4.55 ± 0.17, and a metallicity [Fe/H] = +0.04 ± 0.06. The stellar mass and radius determined through the empirical relationship of Torres et al. yields 1.10±0.09M and 0.92±0.19R . The minimummass ofMARVELS- 5b is 65.0±2.9MJup, indicating that it is likely to be either a BD or a very low mass star, thus occupying a relatively sparsely populated region of the mass function of companions to solar-type stars. The distance to this system is 101 ± 10 pc from the astrometric measurements of Hipparcos. No stellar tertiary is detected in the high-contrast images taken by either FastCam lucky imaging or Keck adaptive optics imaging, ruling out any star with mass greater than 0.2 M at a separation larger than 40 AU.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofThe Astronomical journal. Vol. 146, no. 3 (Sep. 2013), 65, 11 p.pt_BR
dc.rightsOpen Accessen
dc.subjectBinaries: spectroscopicen
dc.subjectEstrelas binariaspt_BR
dc.subjectBrown dwarfsen
dc.subjectAnãs marronspt_BR
dc.subjectMassa estelarpt_BR
dc.subjectStars: individual (HIP 67526)en
dc.subjectStars: low-massen
dc.subjectTechniques: radial velocitiesen
dc.titleVery low mass stellar and substellar companions to solar-like stars from MARVELS. IV. A candidate bronw dwarf or low-mass stellar companion HIP 67526pt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000901139pt_BR
dc.type.originEstrangeiropt_BR


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