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  1. No Access

    Chapter and Conference Paper

    A Radiative Wind Model for Active Hot Stars

    Radiative wind from active hot stars has been studied for more than two decades. During this period, numerous models which try to fit a small number of observables as closely as possible have been developed, s...

    P. Stee, D. Bonneau, D. Mourard, F. Vakili in Numerical Astrophysics (1999)

  2. No Access

    Chapter and Conference Paper

    Physics of radiatively driven winds by high angular resolution observations (HARO)

    Numerous models have been developed during the last two decades which try to fit a small number of “classical” observables as closely as possible (i.e Hα line profile and continuum energy distribution or polar...

    Ph. Stee, D. Bonneau, D. Mourard, F. Vakili in Variable and Non-spherical Stellar Winds i… (1999)

  3. No Access

    Chapter

    Sub-Milliarcsecond Structures in P Cyg

    We report the first resolution of the envelope of P Cyg in Ha using the GI2T spectro-interferometer in the southern France. We detected a localized asymmetry at .8 mas to the South of P Cyg’s photosphere on Au...

    F. Vakili, P. Berio, D. Bonneau, O. Chesneau, D. Mourard, P. Stee, N. Thureau in B[e] Stars (1998)

  4. No Access

    Chapter and Conference Paper

    Stellar Astrophysics with Sub-Milliarcsecond Optical Interferometry

    Although stellar interferometers are capable of measuring the angular diameters of stars, with longer baselines they may also be used to measure brightness variations across a star’s surface and to provide con...

    Ph. Stee, D. Bonneau, D. Mourard, P. Lawson… in Astronomical and Astrophysical Objectives … (1995)

  5. No Access

    Chapter and Conference Paper

    The Extended Hα Component of T Tau

    We report the observation of T Tau by visible speckle interferometry at the CFHT. The observations were carried out at two wavelengths simultaneously. Each image was split into two, allowing improved data proc...

    E. Thiébaut, N. Devaney, R. Foy, B. De Batz… in Very High Angular Resolution Imaging (1994)

  6. No Access

    Chapter and Conference Paper

    Progress on GI2T

    The purpose of this paper is to describe the operation of GI2T, the visible Michelson stellar interferometer with two 1.5 m apertures, as well as a presentation of its desired evolution.

    I. Tallon-bosc, D. Bonneau, A. Labeyrie, F. Morand… in Very High Angular Resolution Imaging (1994)

  7. No Access

    Chapter and Conference Paper

    First Results of an International Multisite Multitechnique Campaign on omicron and

    Omicron Andromedae is a multiple system of at least four stars: a B ↔Be star (component A), a spectroscopic binary (components B1-B2) and a close companion (component a). According to several studies (see Hill...

    J. P. Sareyan, J. Chauville, D. Briot… in Pulsation, Rotation and Mass Loss in Early… (1994)

  8. No Access

    Chapter and Conference Paper

    Lock-In Image Subtraction: Detectability of Circumstellar Planets with the Large Space Telescope

    Faint circumstellar features in the close vicinity of stars or qso’s are of considerable astrophysical interest since they can provide important informations on stellar parameters and evolutions: stellar compa...

    D. Bonneau, M. Josse, A. Labeyrie in Image Processing Techniques in Astronomy (1975)