Very low mass stellar and substellar companions to solar-like stars from MARVELS. IV. A candidate bronw dwarf or low-mass stellar companion HIP 67526
dc.contributor.author | Jiang, Peng | pt_BR |
dc.contributor.author | Ge, Jian | pt_BR |
dc.contributor.author | Cargile, Phillip A. | pt_BR |
dc.contributor.author | Crepp, Justin R. | pt_BR |
dc.contributor.author | De Lee, Nathan M. | pt_BR |
dc.contributor.author | Mello, Gustavo Frederico Porto de | pt_BR |
dc.contributor.author | Esposito, Massimiliano | pt_BR |
dc.contributor.author | Ferreira, Letícia D. | pt_BR |
dc.contributor.author | Femenía Castellá, B. | pt_BR |
dc.contributor.author | Fleming, S.W. | pt_BR |
dc.contributor.author | Gaudi, B. S. | pt_BR |
dc.contributor.author | Ghezzi, Luan | pt_BR |
dc.contributor.author | González Hernández, Jonay I. | pt_BR |
dc.contributor.author | Hebb, Leslie | pt_BR |
dc.contributor.author | Lee, Brian L. | pt_BR |
dc.contributor.author | Ma, Bo | pt_BR |
dc.contributor.author | Stassun, Keivan G. | pt_BR |
dc.contributor.author | Wang, Ji | pt_BR |
dc.contributor.author | Wisniewski, J.P. | pt_BR |
dc.contributor.author | Agol, Eric | pt_BR |
dc.contributor.author | Bizyaev, D. | pt_BR |
dc.contributor.author | Brewington, Howard J. | pt_BR |
dc.contributor.author | Chang, Liang | pt_BR |
dc.contributor.author | Costa, Luiz N. da | pt_BR |
dc.contributor.author | Eastman, Jason | pt_BR |
dc.contributor.author | Ebelke, Garrett L. | pt_BR |
dc.contributor.author | Gary, Bruce L. | pt_BR |
dc.contributor.author | Kane, Stephen R. | pt_BR |
dc.contributor.author | Li, Rui | pt_BR |
dc.contributor.author | Liu, Jian | pt_BR |
dc.contributor.author | Mahadevan, Suvrath | pt_BR |
dc.contributor.author | Maia, Marcio Antonio Geimba | pt_BR |
dc.contributor.author | Malanushenko, V. | pt_BR |
dc.contributor.author | Malanushenko, E. | pt_BR |
dc.contributor.author | Muna, Demitri | pt_BR |
dc.contributor.author | Nguyen, D.C. | pt_BR |
dc.contributor.author | Ogando, Ricardo L.C. | pt_BR |
dc.contributor.author | Oravetz, Audrey | pt_BR |
dc.contributor.author | Oravetz, Daniel J. | pt_BR |
dc.contributor.author | Pan, K. | pt_BR |
dc.contributor.author | Pepper, J. | pt_BR |
dc.contributor.author | Paegert, Martin | pt_BR |
dc.contributor.author | Allende Prieto, Carlos | pt_BR |
dc.contributor.author | Rebolo, Rafael | pt_BR |
dc.contributor.author | Santiago, Basilio Xavier | pt_BR |
dc.contributor.author | Schneider, D.P. | pt_BR |
dc.contributor.author | Bradley, Alaina C. Shelden | pt_BR |
dc.contributor.author | Sivarani, Thirupathi | pt_BR |
dc.contributor.author | Snedden, S.A. | pt_BR |
dc.contributor.author | Van Eyken, Julian C. | pt_BR |
dc.contributor.author | Wan, Xiaoke | pt_BR |
dc.contributor.author | Weaver, Benjamin A. | pt_BR |
dc.contributor.author | Zhao, Bo | pt_BR |
dc.date.accessioned | 2014-12-12T02:16:14Z | pt_BR |
dc.date.issued | 2013 | pt_BR |
dc.identifier.issn | 0004-6256 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/108178 | pt_BR |
dc.description.abstract | We 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.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | The Astronomical journal. Vol. 146, no. 3 (Sep. 2013), 65, 11 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Binaries: spectroscopic | en |
dc.subject | Estrelas binarias | pt_BR |
dc.subject | Brown dwarfs | en |
dc.subject | Anãs marrons | pt_BR |
dc.subject | Massa estelar | pt_BR |
dc.subject | Stars: individual (HIP 67526) | en |
dc.subject | Stars: low-mass | en |
dc.subject | Techniques: radial velocities | en |
dc.title | Very low mass stellar and substellar companions to solar-like stars from MARVELS. IV. A candidate bronw dwarf or low-mass stellar companion HIP 67526 | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000901139 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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