A search for starlight reflected from HD 75289b

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

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

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 &SIME; 60&DEG;, assuming a grey albedo, a Venus-like phase function and a planetary radius R-p = 1.6 R-Jup. We are able to rule out some combinations of the predicted planetary radius and atmospheric albedo models with high, reflective cloud decks.

Original languageEnglish
Pages (from-to)L16-L20
Number of pages5
JournalMonthly Notices of the Royal Astronomical Society
Volume346
Issue number2
Publication statusPublished - 1 Dec 2003

Keywords

  • techniques : spectroscopic
  • stars : individual : HD 75289
  • planetary systems
  • EXTRASOLAR GIANT PLANETS
  • G-TYPE STARS
  • CORALIE SURVEY
  • PARENT STARS
  • TAU-BOOTIS
  • F-TYPE
  • COMPANIONS
  • ATMOSPHERES
  • SPECTRA
  • ALBEDO

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