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  WASP-3b: A strongly irradiated planet
  Last update: April 7 2008

 
 
  • "WASP-3b: a strongly-irradiated transiting gas-giant planet"
    D. Pollacco, I. Skillen, A. Collier Cameron, B. Loeillet, H.C. Stempels, F. Bouchy, N.P. Gibson, L. Hebb, G. Hebrard, Y.C. Joshi, I. McDonald, B. Smalley, A.M.S. Smith, R.A. Street, S. Udry, R.G. West, D.M. Wilson, P.J. Wheatley, S. Aigrain, C.R. Benn, V.A. Bruce, D.J. Christian, W.I. Clarkson, B. Enoch, A. Evans, A.Fitzsimmons, C.A. Haswell, C. Hellier, S. Hickey, S.T. Hodgkin, K. Horne, M. Hrudkova, J. Irwin, S.R. Kane, F.P. Keenan, T.A. Lister, P. Maxted, M. Mayor, C. Moutou, A.J. Norton, J. P. Osborne, N. Parley, F. Pont, D. Queloz, R. Ryans, E. Simpson, 2008
    MNRAS 385, 1576 (ADS) --> Transit light curve & RV orbit


    • Top:WASP-3 Photometric data and fitted transit curves
    Bottom:SOPHIE radial-velocity data and fitted orbit.
    Larger image (139kb)


  • SOPHIE orbital solution (from Pollacco et al. 2008):

    Object
    Period
    [days]
    T_trans
    [JD - 2400000]
    Eccentricity
    V
    [km/s]
    Omega
    [deg]
    K1
    [m/s]
    a
    [AU]
    N
    WASP-3b
    1.846834
    +/-
    0.000002
    54143.8503
    +0.0004 /-0.0003
    0.0 (fixed)
    -5.4887
    +0.0013 /-0.0018
    0.0 (fixed)
    251.2
    +7.9 /- 10.8
    0.0317
    +0.0005 /-0.001
    7


  • Other parameters (from Pollacco et al. 2008):

    Planet mass
    [M_Jup]
    1.76 +0.08 /-0.14
    Planet radius
    [R_Jup]
    1.31 +0.07 /-0.14
    Planet density
    [rho_Jup]
    0.78 +0.28 /-0.09
    Planet surface gravity
    [CGS]
    3.37 +0.09 /-0.04
    Planet equ. temperature
    [K]
    1960 +33 /-76
    Orbital inclination
    [deg]
    84.4 +2.1 /- 0.8


  • Stellar properties:

    Parameter
    Value
    Reference
    Sp. Type
    F7-8V
    Pollacco et al. 2008
    m_v [mag]
    10.5
    Pollacco et al. 2008
    T_eff [K]
    6400 +/- 100
    Pollacco et al. 2008
    log(g) [CGS]
    4.25 +/- 0.05
    Pollacco et al. 2008
    M_1 [M_Sun]
    1.24 +0.06 /-0.11
    Pollacco et al. 2008
    [M/H]
    0.0 +/- 0.2
    Pollacco et al. 2008
    R [R_Sun]
    1.31 +0.05 /- 0.12
    Pollacco et al. 2008
    Vsini [km/s]
    13.4 +/- 1.5
    Pollacco et al. 2008


  • Links:
  • superWASP home page
  • SOPHIE @ OHP

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    stephane.udry@obs.unige.ch