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  A 2 Jupiter-mass planet orbiting HD 8574


  Last update: March the 5th 2005

 
 
 
  • "The ELODIE survey for northern extra-solar I. Six new extra-solar planet candidates"
    C. Perrier, J.-P. Sivan, D. Naef, J.-L. Beuzit, M. Mayor, D. Queloz, S. Udry, 2003
    A&A 410, 1039 (ADS)


  • April 4th 2001 ESO Press Release

    • Higher resolution image (178 kb)


  • Orbital solution (from Perrier et al. 2003):

    Object
    Period
    (days)
    T0
    (JD - 2 400 000)
    Eccentricity
    V
    (km/s)
    Omega
    (deg)
    K1
    (km/s)
    m2sini
    (M_Jup)
    a
    (AU)
    N
    Residuals
    (m/s)
    HD 8574
    227.55 +/- 0.77
    51467.5 +/- 6.6
    0.288 +/- 0.053
    18.919 +/- 0.002
    3.6 +/- 10.9
    0.066 +/- 0.005
    2.11
    0.77
    41
    11.8


  • Stellar properties:

    Parameter
    Value
    Reference
    Sp. Type
    F8
    Hipparcos
    pi (mas)
    22.65
    Hipparcos
    d (pc)
    44.2
    Hipparcos
    m_v (mag)
    7.12
    Hipparcos
    B-V (mag)
    0.577
    Hipparcos
    T_eff (K)
    6080 +/- 50
    Santos et al. 2003
    M_v (mag)
    3.89
    -
    L (L_sol)
    2.25
    -
    log(g) (CGS)
    4.41 +/- 0.15
    Santos et al. 2003
    M_1 (M_sol)
    1.17
    Santos et al. 2003
    log(R'HK)
    -
    -
    P_rot (d)
    -
    -
    Vsini (km/s)
    4.04 +/- 0.61
    Elodie, Perrier et al. 2003
    Age (Gyr)
    -
    -
    [Fe/H]
    0.05 +/- 0.07
    Santos et al. 2003

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    stephane.udry@obs.unige.ch