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  HD 81040 b: a planet around a young disc star
  Last update: June the 3rd 2006

 
 
 
 
 
 
  • "A massive planet to the young disc star HD 81040"
    A. Sozzetti, S. Udry, S. Zucker, G. Torres, J.-L. Beuzit, D.W. Latham, M. Mayor, T. Mazeh, D. Naef, C. Perrier, D. Queloz, J.-P. Sivan, 2006
    A&A 449, 417 (ADS)

    •  
     
    HIRES (open dots) and ELODIE (filled dots)
    radial velocities for HD 81040.
    Top: Temporal RVs and residuals.
    Bottom: Phase-folded RVs and residuals.
    Larger image (107 kb)


  • Orbital solution (from Sozzetti et al. 2006):

    Object
    Period
    (days)
    T0
    (JD - 2 400 000)
    Eccentricity
    V
    (km/s)
    Omega
    (deg)
    K1
    (m/s)
    m2sini
    (M_Jup)
    a
    (AU)
    N
    Residuals
    (m/s)
    HD 81040
    1001.7 +/- 7.0
    52504.0 +/- 12.0
    0.526 +/- 0.042
    49.2535 +/- 0.0063
    81.3 +/- 7.2
    168 +/- 9
    6.86 +/- 0.71
    1.94
    23 (Elodie) +
    3 (Hires)
    26.0


  • Stellar properties:

    Parameter
    Value
    Reference
    Sp. Type
    G2/G3
    Sozzetti et al. 2006
    pi (mas)
    30.71
    Hipparcos
    d (pc)
    32.56
    Hipparcos
    m_v (mag)
    7.72
    Hipparcos
    B-V (mag)
    0.68
    Hipparcos
    T_eff (K)
    5700 +/- 50
    Sozzetti et al. 2006
    M_v (mag)
    5.17
    -
    L (L_sol)
    -
    -
    log(g) (CGS)
    4.5 +/- 0.1
    Sozzetti et al. 2006
    M_1 (M_sol)
    0.96 +/- 0.04
    Sozzetti et al. 2006
    log(R'HK)
    -4.48
    Sozzetti et al. 2006
    P_rot (d)
    9.8
    Sozzetti et al. 2006
    Vsini (km/s)
    2 +/- 1
    Sozzetti et al. 2006
    Age (Gyr)
    0.73 +/- 0.1
    Sozzetti et al. 2006
    Log N(Li)
    1.90/1.91 +/- 0.07
    Sozzetti et al. 2006
    [Fe/H]
    -0.16 +/- 0.06
    Sozzetti et al. 2006


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    stephane.udry@obs.unige.ch