Volume 551, March 2013
|Number of page(s)||5|
|Section||Planets and planetary systems|
|Published online||04 March 2013|
On the functional form of the metallicity-giant planet correlation⋆
Centro de Astrofísica, Universidade do Porto,
Rua das Estrelas,
2 Departamento de Física e Astronomia, Faculdade de Ciências, Universidade do Porto, Portugal
3 Instituto de Astrofísica de Canarias, 38200, La Laguna, Tenerife, Spain
4 Departamento de Astrofísica, Universidad de La Laguna, 38206, La Laguna, Tenerife, Spain
5 Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland
Received: 8 November 2012
Accepted: 28 January 2013
Context. It is generally accepted that the presence of a giant planet is strongly dependent on the stellar metallicity. A stellar mass dependence has also been investigated, but this dependence does not seem as strong as the metallicity dependence. Even for metallicity, however, the exact form of the correlation has not been established.
Aims. In this paper, we test several scenarios for describing the frequency of giant planets as a function of its host parameters. We perform this test on two volume-limited samples (from CORALIE and HARPS).
Methods. By using a Bayesian analysis, we quantitatively compared the different scenarios.
Results. We confirm that giant planet frequency is indeed a function of metallicity. However, there is no statistical difference between a constant or an exponential function for stars with subsolar metallicities contrary to what has been previously stated in the literature. The dependence on stellar mass could neither be confirmed nor be discarded.
Key words: methods: statistical / planet-star interactions / stars: abundances
Full Tables 1 and 2 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (126.96.36.199) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/551/A112
© 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.