Fulltext

A search for starlight reflected from HD 75289b

Leigh, Christopher ; Collier Cameron, Andrew ; Udry, Stephane ; Donati, Jean-François ; Horne, Keith ; James, David ; Penny, Alan

In: Monthly Notices of the Royal Astronomical Society, 2003, vol. 346, no. 2, p. L16-L20

Ajouter à la liste personnelle
    Titre
    • A search for starlight reflected from HD 75289b
    Auteur
    • Leigh, Christopher. School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9SS
    • Collier Cameron, Andrew. School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9SS
    • Udry, Stephane. Observatoire de Genève, 51 ch. des Maillettes, 1290 Sauverny, Switzerland
    • Donati, Jean-François. Laboratoire d'Astrophysique Observatoire Midi-Pyrénées, 14 avenue Edouard Belin, F-31400 Toulouse, France
    • Horne, Keith. School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9SS
    • James, David. Observatoire de Grenoble, F-38041 Grenoble, Cedex 9, France
    • Penny, Alan. Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Monthly Notices of the Royal Astronomical Society, 2003, vol. 346, no. 2, p. L16-L20. Blackwell Science Ltd
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:300503
    Summary
    We have used a Doppler tomographic analysis to conduct a deep search for the starlight reflected from the planetary companion to HD 75289. In four nights on VLT(UT2)/UVES in 2003 January, we obtained 684 high-resolution echelle spectra with a total integration time of 26 h. We establish an upper limit on the geometric albedo of the planet p < 0.12 (to the 99.9 per cent significance level) at the most probable orbital inclination i≃ 60°, assuming a grey albedo, a Venus-like phase function and a planetary radius Rp= 1.6 RJup. We are able to rule out some combinations of the predicted planetary radius and atmospheric albedo models with high, reflective cloud decks