A search for starlight reflected from HD 75289b

2003/10/17 by C. J. Leigh, C. Leigh, A. Collier Cameron +8
Physics and Astronomy · #Albedo (alchemy) #Astrobiology #Astronomy #Astrophysics #Geometric albedo #History and Developments in Astronomy #Photometry (optics) #Physics #Planet #RADIUS #Solar and Space Plasma Dynamics #Starlight #Stars #Stellar, planetary, and galactic studies #Venus #astro-ph

paper · pdf · doi:10.1046/j.1365-2966.2003.07276.x

published as Mon.Not.Roy.Astron.Soc. 346 (2003) L16 · 5 pages, 5 figures, MNRAS accepted 12 Oct 2003

arxiv created 2003/10/17 · openalex publication_date 2003/11/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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≃ 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.

Citations

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