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  Two planets around the F6IV-V star HD 60532
  Last update: February 6 2009

 
 
  • "Extrasolar planets and brown dwarfs around A-F type stars V. A planetary system found with HARPS around the F6IV-V star HD 60532"
    M. Desort, A.-M. Lagrange, F. Galland, H. Beust, S. Udry, M. Mayor, G. Lo Curto, 2008
    A&A 491, 883 (ADS)
  • "HD60532, a planetary system in a 3:1 mean motion resonance"
    J. Laskar & A.C.M. Correia, 2009
    A&A in press (astro-ph/0902.0667)

    •  
    Larger image
    HARPS radial-velocity data for HD 60532
    Top: Temporal velocities and 2-planet fit
    Middle: Phase-folded orbit of the inner planet
    Bottom: Phase-folded orbit of the outer planet


  • Orbital solution (from Desort et al. 2008):

    Object
    Period
    (days)
    T0
    (JD - 2 400 000)
    Eccentricity
    Omega
    (deg)
    K1
    (m/s)
    m2sini
    (M_Jup)
    a
    (AU)
    N
    Residuals
    (m/s)
    HD 60532 b
    201.3
    +/- 0.6
    53987
    +/- 2
    0.2
    +/- 0.03
    -8.1
    +/- 4.9
    29.3 +/- 1.4
    1.03
    +/- 0.05
    0.759
    +/- 0.001
    147
    4.4
    HD 60532 c
    604
    +/- 9
    53723
    +/- 158
    0.02
    +/- 0.02
    -209
    +/- 92
    46.4 +/- 1.7
    2.46
    +/- 0.09
    1.58
    +/- 0.02
    "
    "


  • Stellar properties:

    Parameter
    Value
    Reference
    Sp. Type
    F6IV-V
    Hipparcos
    pi (mas)
    38.9
    Hipparcos
    d (pc)
    25.7
    Hipparcos
    m_v (mag)
    4.45
    Hipparcos
    B-V (mag)
    0.52
    Hipparcos
    T_eff (K)
    6095
    Nordstroem et al. 2004
    M_v (mag)
    2.40
    Desort et al. 2008
    L (L_sol)
    -
    -
    log(g) (CGS)
    3.83
    Gray et al. 2006
    M_1 (M_sol)
    1.44 +0.03/-0.01
    Nordstroem et al. 2004
    log(R'HK)
    -4.94
    Desort et al. 2008
    P_rot (d)
    <~7
    Desort et al. 2008
    Vsini (km/s)
    8.0
    Desort et al. 2008
    Age (Gyr)
    2.7 +/- 0.1
    Nordstroem et al. 2004
    [Fe/H]
    -0.42
    Nordstroem et al. 2004


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    stephane.udry@obs.unige.ch