A search for starlight reflected from HD 75289 b
Astrophysics
2009-11-10 v1
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 4 nights on VLT2/UVES in January 2003, we obtained 684 high resolution echelle spectra with a total integration time of 26 hours. We establish an upper limit on the planet's geometric albedo p < 0.12 (to the 99.9% significance level) at the most probable orbital inclination i ~ 60 degrees, 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.
Cite
@article{arxiv.astro-ph/0310489,
title = {A search for starlight reflected from HD 75289 b},
author = {C. Leigh and A. Collier Cameron and S. Udry and J. -F. Donati and K. Horne and D. James and A. Penny},
journal= {arXiv preprint arXiv:astro-ph/0310489},
year = {2009}
}
Comments
5 pages, 5 figures, MNRAS accepted 12 Oct 2003