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 language | English |
|---|---|
| Pages (from-to) | L16-L20 |
| Number of pages | 5 |
| Journal | Monthly Notices of the Royal Astronomical Society |
| Volume | 346 |
| Issue number | 2 |
| Publication status | Published - 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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