Volume 550, February 2013
|Number of page(s)||12|
|Section||Planets and planetary systems|
|Published online||28 January 2013|
Secondary eclipses in the CoRoT light curves
A homogeneous search based on Bayesian model selection
Instituto de Astrofísica de Canarias (IAC), 38200
La Laguna, Tenerife
2 Dept. Astrofísica, Universidad de La Laguna (ULL), 38206, La Laguna, Tenerife, Spain
Received: 23 July 2012
Accepted: 20 November 2012
Aims. We aim to identify and characterize secondary eclipses in the original light curves of all published CoRoT planets using uniform detection and evaluation critetia.
Methods. Our analysis is based on a Bayesian model selection between two competing models: one with and one without an eclipse signal. The search is carried out by mapping the Bayes factor in favor of the eclipse model as a function of the eclipse center time, after which the characterization of plausible eclipse candidates is done by estimating the posterior distributions of the eclipse model parameters using Markov chain Monte Carlo.
Results. We discover statistically significant eclipse events for two planets, CoRoT-6b and CoRoT-11b, and for one brown dwarf, CoRoT-15b. We also find marginally significant eclipse events passing our plausibility criteria for CoRoT-3b, 13b, 18b, and 21b. The previously published CoRoT-1b and CoRoT-2b eclipses are also confirmed.
Key words: planetary systems / eclipses / methods: statistical
© ESO, 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.