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

Peng Jiang, Jian Ge, Phillip Cargile, Justin R. Crepp, Nathan De Lee, Gustavo F. Porto De Mello, Massimiliano Esposito, Letícia D. Ferreira, Bruno Femenia, Scott W. Fleming, B. Scott Gaudi, Luan Ghezzi, Jonay I. González Hernández, Leslie Hebb, Brian L. Lee, Bo Ma, Keivan G. Stassun, Ji Wang, John P. Wisniewski, Eric Agol & 33 others Dmitry Bizyaev, Howard Brewington, Liang Chang, Luiz Nicolaci Da Costa, Jason D. Eastman, Garrett Ebelke, Bruce Gary, Stephen R. Kane, Rui Li, Jian Liu, Suvrath Mahadevan, Marcio A.G. Maia, Viktor Malanushenko, Elena Malanushenko, Demitri Muna, Duy Cuong Nguyen, Ricardo L.C. Ogando, Audrey Oravetz, Daniel Oravetz, Kaike Pan, Joshua Pepper, Martin Paegert, Carlos Allende Prieto, Rafael Rebolo, Basilio X. Santiago, Donald P. Schneider, Alaina C. Shelden Bradley, Thirupathi Sivarani, Stephanie Snedden, J. C. Van Eyken, Xiaoke Wan, Benjamin A. Weaver, Bo Zhao

Research output: Contribution to journalArticle

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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 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.

Original languageEnglish (US)
Article number65
JournalAstronomical Journal
Volume146
Issue number3
DOIs
StatePublished - Sep 1 2013

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stars
radial velocity
extrasolar planets
observatories
observatory
hot isostatic pressing
Markov chains
image contrast
Markov chain
stellar mass
eccentricity
adaptive optics
metallicity
spectroscopy
time measurement
gravity
gravitation
orbitals
radii
high resolution

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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Jiang, Peng ; Ge, Jian ; Cargile, Phillip ; Crepp, Justin R. ; De Lee, Nathan ; Porto De Mello, Gustavo F. ; Esposito, Massimiliano ; Ferreira, Letícia D. ; Femenia, Bruno ; Fleming, Scott W. ; Gaudi, B. Scott ; Ghezzi, Luan ; González Hernández, Jonay I. ; Hebb, Leslie ; Lee, Brian L. ; Ma, Bo ; Stassun, Keivan G. ; Wang, Ji ; Wisniewski, John P. ; Agol, Eric ; Bizyaev, Dmitry ; Brewington, Howard ; Chang, Liang ; Da Costa, Luiz Nicolaci ; Eastman, Jason D. ; Ebelke, Garrett ; Gary, Bruce ; Kane, Stephen R. ; Li, Rui ; Liu, Jian ; Mahadevan, Suvrath ; Maia, Marcio A.G. ; Malanushenko, Viktor ; Malanushenko, Elena ; Muna, Demitri ; Nguyen, Duy Cuong ; Ogando, Ricardo L.C. ; Oravetz, Audrey ; Oravetz, Daniel ; Pan, Kaike ; Pepper, Joshua ; Paegert, Martin ; Allende Prieto, Carlos ; Rebolo, Rafael ; Santiago, Basilio X. ; Schneider, Donald P. ; Shelden Bradley, Alaina C. ; Sivarani, Thirupathi ; Snedden, Stephanie ; Van Eyken, J. C. ; Wan, Xiaoke ; Weaver, Benjamin A. ; Zhao, Bo. / 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. In: Astronomical Journal. 2013 ; Vol. 146, No. 3.
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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",
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 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.",
author = "Peng Jiang and Jian Ge and Phillip Cargile and Crepp, {Justin R.} and {De Lee}, Nathan and {Porto De Mello}, {Gustavo F.} and Massimiliano Esposito and Ferreira, {Let{\'i}cia D.} and Bruno Femenia and Fleming, {Scott W.} and Gaudi, {B. Scott} and Luan Ghezzi and {Gonz{\'a}lez Hern{\'a}ndez}, {Jonay I.} and Leslie Hebb and Lee, {Brian L.} and Bo Ma and Stassun, {Keivan G.} and Ji Wang and Wisniewski, {John P.} and Eric Agol and Dmitry Bizyaev and Howard Brewington and Liang Chang and {Da Costa}, {Luiz Nicolaci} and Eastman, {Jason D.} and Garrett Ebelke and Bruce Gary and Kane, {Stephen R.} and Rui Li and Jian Liu and Suvrath Mahadevan and Maia, {Marcio A.G.} and Viktor Malanushenko and Elena Malanushenko and Demitri Muna and Nguyen, {Duy Cuong} and Ogando, {Ricardo L.C.} and Audrey Oravetz and Daniel Oravetz and Kaike Pan and Joshua Pepper and Martin Paegert and {Allende Prieto}, Carlos and Rafael Rebolo and Santiago, {Basilio X.} and Schneider, {Donald P.} and {Shelden Bradley}, {Alaina C.} and Thirupathi Sivarani and Stephanie Snedden and {Van Eyken}, {J. C.} and Xiaoke Wan and Weaver, {Benjamin A.} and Bo Zhao",
year = "2013",
month = "9",
day = "1",
doi = "10.1088/0004-6256/146/3/65",
language = "English (US)",
volume = "146",
journal = "Astronomical Journal",
issn = "0004-6256",
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Jiang, P, Ge, J, Cargile, P, Crepp, JR, De Lee, N, Porto De Mello, GF, Esposito, M, Ferreira, LD, Femenia, B, Fleming, SW, Gaudi, BS, Ghezzi, L, González Hernández, JI, Hebb, L, Lee, BL, Ma, B, Stassun, KG, Wang, J, Wisniewski, JP, Agol, E, Bizyaev, D, Brewington, H, Chang, L, Da Costa, LN, Eastman, JD, Ebelke, G, Gary, B, Kane, SR, Li, R, Liu, J, Mahadevan, S, Maia, MAG, Malanushenko, V, Malanushenko, E, Muna, D, Nguyen, DC, Ogando, RLC, Oravetz, A, Oravetz, D, Pan, K, Pepper, J, Paegert, M, Allende Prieto, C, Rebolo, R, Santiago, BX, Schneider, DP, Shelden Bradley, AC, Sivarani, T, Snedden, S, Van Eyken, JC, Wan, X, Weaver, BA & Zhao, B 2013, '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', Astronomical Journal, vol. 146, no. 3, 65. https://doi.org/10.1088/0004-6256/146/3/65

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. / Jiang, Peng; Ge, Jian; Cargile, Phillip; Crepp, Justin R.; De Lee, Nathan; Porto De Mello, Gustavo F.; Esposito, Massimiliano; Ferreira, Letícia D.; Femenia, Bruno; Fleming, Scott W.; Gaudi, B. Scott; Ghezzi, Luan; González Hernández, Jonay I.; Hebb, Leslie; Lee, Brian L.; Ma, Bo; Stassun, Keivan G.; Wang, Ji; Wisniewski, John P.; Agol, Eric; Bizyaev, Dmitry; Brewington, Howard; Chang, Liang; Da Costa, Luiz Nicolaci; Eastman, Jason D.; Ebelke, Garrett; Gary, Bruce; Kane, Stephen R.; Li, Rui; Liu, Jian; Mahadevan, Suvrath; Maia, Marcio A.G.; Malanushenko, Viktor; Malanushenko, Elena; Muna, Demitri; Nguyen, Duy Cuong; Ogando, Ricardo L.C.; Oravetz, Audrey; Oravetz, Daniel; Pan, Kaike; Pepper, Joshua; Paegert, Martin; Allende Prieto, Carlos; Rebolo, Rafael; Santiago, Basilio X.; Schneider, Donald P.; Shelden Bradley, Alaina C.; Sivarani, Thirupathi; Snedden, Stephanie; Van Eyken, J. C.; Wan, Xiaoke; Weaver, Benjamin A.; Zhao, Bo.

In: Astronomical Journal, Vol. 146, No. 3, 65, 01.09.2013.

Research output: Contribution to journalArticle

TY - JOUR

T1 - 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

AU - Jiang, Peng

AU - Ge, Jian

AU - Cargile, Phillip

AU - Crepp, Justin R.

AU - De Lee, Nathan

AU - Porto De Mello, Gustavo F.

AU - Esposito, Massimiliano

AU - Ferreira, Letícia D.

AU - Femenia, Bruno

AU - Fleming, Scott W.

AU - Gaudi, B. Scott

AU - Ghezzi, Luan

AU - González Hernández, Jonay I.

AU - Hebb, Leslie

AU - Lee, Brian L.

AU - Ma, Bo

AU - Stassun, Keivan G.

AU - Wang, Ji

AU - Wisniewski, John P.

AU - Agol, Eric

AU - Bizyaev, Dmitry

AU - Brewington, Howard

AU - Chang, Liang

AU - Da Costa, Luiz Nicolaci

AU - Eastman, Jason D.

AU - Ebelke, Garrett

AU - Gary, Bruce

AU - Kane, Stephen R.

AU - Li, Rui

AU - Liu, Jian

AU - Mahadevan, Suvrath

AU - Maia, Marcio A.G.

AU - Malanushenko, Viktor

AU - Malanushenko, Elena

AU - Muna, Demitri

AU - Nguyen, Duy Cuong

AU - Ogando, Ricardo L.C.

AU - Oravetz, Audrey

AU - Oravetz, Daniel

AU - Pan, Kaike

AU - Pepper, Joshua

AU - Paegert, Martin

AU - Allende Prieto, Carlos

AU - Rebolo, Rafael

AU - Santiago, Basilio X.

AU - Schneider, Donald P.

AU - Shelden Bradley, Alaina C.

AU - Sivarani, Thirupathi

AU - Snedden, Stephanie

AU - Van Eyken, J. C.

AU - Wan, Xiaoke

AU - Weaver, Benjamin A.

AU - Zhao, Bo

PY - 2013/9/1

Y1 - 2013/9/1

N2 - 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 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.

AB - 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 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.

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U2 - 10.1088/0004-6256/146/3/65

DO - 10.1088/0004-6256/146/3/65

M3 - Article

VL - 146

JO - Astronomical Journal

JF - Astronomical Journal

SN - 0004-6256

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