On the functional form of the metallicity-giant planet correlation

A. Mortier; N. C. Santos; S. Sousa; G. Israelian; M. Mayor; S. Udry

doi:10.1051/0004-6361/201220707

On the functional form of the metallicity-giant planet correlation

A. Mortier^*, N. C. Santos, S. Sousa, G. Israelian, M. Mayor, S. Udry

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

49 Citations (Scopus)

Abstract

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.

Original language	English
Article number	A112
Journal	Astronomy and Astrophysics
Volume	551
DOIs	https://doi.org/10.1051/0004-6361/201220707
Publication status	Published - 2013

Bibliographical note

Funding Information:
This work was supported by the European Research Council/European Community under the FP7 through Starting Grant agreement number 239953. N.C.S. also acknowledges the support from Fundação para a Ciência e a Tecnologia (FCT) through program Ciência 2007 funded by FCT/MCTES (Portugal) and POPH/FSE (EC), and in the form of grants reference PTDC/CTE-AST/098528/2008 and PTDC/CTE-AST/09860/2008.

Keywords

Methods: statistical
Planet-star interactions
Stars: abundances

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1051/0004-6361/201220707

Cite this

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title = "On the functional form of the metallicity-giant planet correlation",

abstract = "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.",

keywords = "Methods: statistical, Planet-star interactions, Stars: abundances",

author = "A. Mortier and Santos, {N. C.} and S. Sousa and G. Israelian and M. Mayor and S. Udry",

note = "Funding Information: This work was supported by the European Research Council/European Community under the FP7 through Starting Grant agreement number 239953. N.C.S. also acknowledges the support from Funda{\c c}{\~a}o para a Ci{\^e}ncia e a Tecnologia (FCT) through program Ci{\^e}ncia 2007 funded by FCT/MCTES (Portugal) and POPH/FSE (EC), and in the form of grants reference PTDC/CTE-AST/098528/2008 and PTDC/CTE-AST/09860/2008.",

year = "2013",

doi = "10.1051/0004-6361/201220707",

language = "English",

volume = "551",

journal = "Astronomy and Astrophysics",

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TY - JOUR

T1 - On the functional form of the metallicity-giant planet correlation

AU - Mortier, A.

AU - Santos, N. C.

AU - Sousa, S.

AU - Israelian, G.

AU - Mayor, M.

AU - Udry, S.

N1 - Funding Information: This work was supported by the European Research Council/European Community under the FP7 through Starting Grant agreement number 239953. N.C.S. also acknowledges the support from Fundação para a Ciência e a Tecnologia (FCT) through program Ciência 2007 funded by FCT/MCTES (Portugal) and POPH/FSE (EC), and in the form of grants reference PTDC/CTE-AST/098528/2008 and PTDC/CTE-AST/09860/2008.

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

KW - Methods: statistical

KW - Planet-star interactions

KW - Stars: abundances

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DO - 10.1051/0004-6361/201220707

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JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A112

ER -

On the functional form of the metallicity-giant planet correlation

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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