Geneva Observatory Web Page Geneva Planet Search Programmes

 
  HD 189733 b: a very hot Jupiter transiting a bright star
  Last update: March the 5th 2007

 
 
 
 
 
 
  • The ELODIE metallicity-biased search for transiting Hot Jupiters. II. A very hot Jupiter transiting the bright K star HD 189733
    F. Bouchy, S. Udry, M. Mayor, C. Moutou, F. Pont, R. Da Silva, S. Ilovaisky, D. Queloz, N.C. Santos, D. Ségransan, S. Zucker 2005
    A&A 444, L15 (ADS) --> Transit light curve & RV orbit
  • Refined Parameters of the Planet Orbiting HD 189733
    G. Á Bakos, H. Knutson, F. Pont, C. Moutou, D. Charbonneau, A. Shporer, F. Bouchy, M. Everett, C. Hergenrother, D.W. Latham, D. Mayor, T. Mazeh, R.W. Noyes, D. Queloz, A. Pál, S. Udry, S. 2006
    ApJ 650, 1160 (ADS) --> New photometric data, Improved light curve & planet parameters
  • On the Age of Stars Harboring Transiting Planets
    C. Melo, N. C. Santos, F. Pont, T. Guillot, G. Israelian, M. Mayor, D. Queloz, S. Udry, 2006
    A&A 460, 251 (ADS) --> Constraints on age and activity and updated stellar atmospheric parameters

    •  
     
    		 
    Larger image
    		 
    Larger image
    ELODIE phase-folded velocities and residuals
    		  
    Temporal ELODIE RVs
       
    		 
    Larger image
    		 
    Larger image
    Rossiter-McLaughlin effect on
    velocities obtained during a transit
    		 
    Photometric data obtained during 3 transits
    with the OHP 1.2-m telescope


  • Orbital solution (from Bouchy et al. 2005):

    Object
    Period
    (days)
    T_trans
    (JD - 2 400 000)
    Eccentricity
    V
    (km/s)
    Omega
    (deg)
    K1
    (m/s)
    m2
    (M_Jup)
    a
    (AU)
    Residuals
    (m/s)
    HD 189733
    2.219 +/- 0.0005
    53629.3890 +/- 0.0004
    0.0 (fixed)
    -2.361 +/- 0.003
    0.0 (fixed)
    205 +/- 6
    1.15 +/- 0.04
    0.0313 +/- 0.0004
    15


  • Other parameters (from Bouchy et al. 2005):

    Transit impact parameter
    0.71 +/- 0.02
    Inclination (deg)
    85.3 +/- 0.1
    Radius ratio
    0.172 +/- 0.003
    Planet radius (R_Jup)
    1.26 +/- 0.03
    Planet density (g/cm^3)
    0.75 +/- 0.08


  • Other parameters (from Bakos et al. 2006):         -- Light curve Bakos et al. 2006
            -- Velocities from Bouchy et al. 2005
            -- Stellar atmospheric parameters and mass from Bouchy et al. 2005
            -- Stellar radius from Masana et al. 2006 (A&A 450, 735)

    Inclination (deg)
    85.79 +/- 0.24
    Planet Radius
    1.154 +/- 0.033
    Period (d)
    2.218573 +/- 0.000020
    Transit time (HJD)
    2453629.39420 +/- 0.00024


  • Stellar properties:

    Parameter
    Value
    Reference
    Sp. Type
    K1-K2
    Bouchy et al. 2005
    pi (mas)
    51.94
    Hipparcos
    d (pc)
    19.25
    Hipparcos
    m_v (mag)
    7.67
    Hipparcos
    B-V (mag)
    0.932
    Hipparcos
    T_eff (K)
    5050 +/- 50
    Bouchy et al. 2005
    M_v (mag)
    6.25
    -
    log(g) (CGS)
    4.53 +/- 0.14
    Bouchy et al. 2005
    M_1 (M_sol)
    0.82 +/- 0.03
    Bouchy et al. 2005
    R (R_sol)
    0.76 +/- 0.01
    0.758 +/- 0.016
    Bouchy et al. 2005
    Masana et al. 2006
    log(R'HK)
    -4.537
    Melo et al. 2006
    P_rot (d)
    19.8
    Noyes et al. 1984
    Vsini (km/s)
    3.5 +/- 1
    Bouchy et al. 2005
    Age (Gyr)
    >0.5
    Melo et al. 2006
    [Fe/H]
    -0.02 +/- 0.03
    Melo et al. 2006


  • Links:

    ----
    Group Logo
    Extrasolar planet page

    Group Logo
    Planet Search and Stellar Kinematics group page

    Geneva Observatory Logo
    Geneva observatory

    Geneva University banner
    University of Geneva

     

    stephane.udry@obs.unige.ch