Paper: astro-ph/0509412
Date: Wed, 14 Sep 2005 21:42:41 GMT (298kb)

Title: A Bayesian analysis of extrasolar planet data for HD 208487

Authors: P. C. Gregory

Comments: For publication in ``Bayesian Inference and Maximum Entropy
Methods'', San Jose 2005, K. H. Knuth, A. E. Abbas, R. D. Morris, J. P.
Castle (eds.), AIP Conference Proceeding
\\
Precision radial velocity data for HD 208487 has been re-analyzed using a new
Bayesian multi-planet Kepler periodogram. The periodgram employs a parallel
tempering Markov chain Monte Carlo algorithm with a novel statistical control
system. We confirm the previously reported orbit (Tinney et al. 2005) of 130
days. In addition, we conclude there is strong evidence for a second planet
with a period of 998 -62 +57 days, an eccentricity of 0.19 -0.18 +0.05, and an
M sin i = 0.46 -0.13 +0.05 of Jupiter's mass.

\\ ( http://arXiv.org/abs/astro-ph/0509412 , 298kb)