dc.contributor.author |
Jiang, P |
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dc.contributor.author |
Ge, J |
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dc.contributor.author |
Cargile, P |
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dc.contributor.author |
Crepp, J. R |
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dc.contributor.author |
De Lee, N |
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dc.contributor.author |
Porto de Mello, G. F |
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dc.contributor.author |
Esposito, M. |
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dc.contributor.author |
Ferreira, L. D |
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dc.contributor.author |
Femenia, B |
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dc.contributor.author |
Fleming, S. W |
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dc.contributor.author |
Gaudi, B. S |
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dc.contributor.author |
Ghezzi, L |
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dc.contributor.author |
Gonzalez Hernandez, J. I |
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dc.contributor.author |
Hebb, L |
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dc.contributor.author |
Lee, B. L |
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dc.contributor.author |
Ma, Bo |
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dc.contributor.author |
Stassun, K. G |
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dc.contributor.author |
Wang, Ji |
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dc.contributor.author |
Wisniewski, John P |
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dc.contributor.author |
Agol, Eric |
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dc.contributor.author |
Bizyaev, Dmitry |
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dc.contributor.author |
Brewington, Howard |
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dc.contributor.author |
Chang, Liang |
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dc.contributor.author |
Nicolaci da Costa, Luiz |
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dc.contributor.author |
Eastman, Jason D |
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dc.contributor.author |
Ebelke, Garrett |
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dc.contributor.author |
Gary, Bruce |
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dc.contributor.author |
Kane, Stephen R |
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dc.contributor.author |
Li, Rui |
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dc.contributor.author |
Liu, Jian |
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dc.contributor.author |
Mahadevan, Suvrath |
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dc.contributor.author |
Maia, Marcio A. G |
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dc.contributor.author |
Malanushenko, Viktor |
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dc.contributor.author |
Malanushenko, Elena |
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dc.contributor.author |
Muna, Demitri |
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dc.contributor.author |
Nguyen, Duy Cuong |
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dc.contributor.author |
Ogando, Ricardo L. C |
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dc.contributor.author |
Oravetz, Audrey |
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dc.contributor.author |
Oravetz, Daniel |
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dc.contributor.author |
Pan, Kaike |
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dc.contributor.author |
Pepper, Joshua |
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dc.contributor.author |
Paegert, Martin |
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dc.contributor.author |
Allende Prieto, Carlos |
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dc.contributor.author |
Rebolo, Rafael |
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dc.contributor.author |
Santiago, Basilio X |
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dc.contributor.author |
Schneider, Donald P |
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dc.contributor.author |
Shelden Bradley, Alaina C |
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dc.contributor.author |
Sivarani, T |
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dc.contributor.author |
Snedden, Stephanie |
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dc.contributor.author |
van Eyken, J. C |
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dc.contributor.author |
Wan, Xiaoke |
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dc.contributor.author |
Weaver, Benjamin A |
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dc.contributor.author |
Zhao, Bo |
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dc.date.accessioned |
2013-08-23T10:52:43Z |
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dc.date.available |
2013-08-23T10:52:43Z |
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dc.date.issued |
2013-09 |
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dc.identifier.citation |
The Astronomical Journal, Vol. 146, No. 3, 65 |
en |
dc.identifier.uri |
http://hdl.handle.net/2248/6317 |
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dc.description |
Restricted Access |
en |
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. Our Keplerian 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 T eff = 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 ± 0.09 M ☉ and 0.92 ± 0.19 R ☉. The minimum mass of MARVELS-5b is 65.0 ± 2.9M Jup, 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.language.iso |
en |
en |
dc.publisher |
IOP Publishing |
en |
dc.relation.uri |
http://dx.doi.org/10.1088/0004-6256/146/3/65 |
en |
dc.relation.uri |
http://arxiv.org/abs/1307.3308 |
en |
dc.rights |
© IOP Publishing |
en |
dc.subject |
Binaries: spectroscopic |
en |
dc.subject |
Brown dwarfs |
en |
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 Brown Dwarf or Low-mass Stellar Companion to HIP 67526 |
en |
dc.type |
Article |
en |