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  A 4 M_Jup Planet Around the Nearby Star Gliese 86
Last update: October 16 2008


 
 
  • "The CORALIE survey for southern extra-solar planets I. A planet orbiting the star Gliese 86"
     D. Queloz, M. Mayor, L. Weber, A. Blecha, M. Burnet, B. Confino, D. Naef, F. Pepe, N.C. Santos, S. Udry, 2000
     A&A 354, 99 (ADS)
  • The very long-period radial-velocity drift superimposed to the main signal is due to the presence of a white dwarf. See Mugrauer & Neuhauser and Lagrange et al. 2006 for details.
  • ESO Press Release


    • Top: Velocities (corrected for the fitted linear drift) versus orbital phase
    Bottom: Residuals around the solution
    Larger image (372 kb)


  • Orbital solution as published in Queloz et al. 2000:

    Object
    Period
    (days)
    T0
    (JD - 2 400 000)
    Eccentricity
    V
    (km/s)
    Omega
    (deg)
    K1
    (km/s)
    slope
    (m/s/yr)
    m2sini
    (M_Jup)
    a
    (AU)
    N
    Residuals
    (m/s)
    GL 86
    15.78 +/- 0.004
    51146.7 +/- 0.2
    0.046 +/- 0.004
    56.57 +/- 0.01
    (at HJD=2 451 150)
    270 +/- 4
    0.380 +/- 0.001
    131
    4.0
    0.11
    61
    7.0


  • Stellar properties:

    Parameter
    Value
    Reference
    Sp. Type
    K0V
    Hipparcos
    pi (mas)
    91.63
    Hipparcos
    d (pc)
    10.91
    Hipparcos
    m_v (mag)
    6.12
    Hipparcos
    B-V (mag)
    0.812
    Hipparcos
    T_eff (K)
    5350
    Flynn & Morell 1997
    M_v (mag)
    5.93
    -
    L (L_sol)
    0.4
    -
    log(g) (CGS)
    4.6
    Flynn & Morell 1997
    M_1 (M_sol)
    0.8
    -
    log(R'HK)
    -4.74
    Henry et al. 1996
    P_rot (d)
    31
    Noyes et al. 1984
    Vsini (km/s)
    <0.7
    Saar et Osten 1997
    Age (Gyr)
    -
    -
    [Fe/H]
    -0.24
    Flynn & Morell 1997


  • Links:
  • GL 86 @ exoplanets.org (Confirmation)

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    stephane.udry@obs.unige.ch