J/A+A/551/A112 Metallicity-giant planet correlation (Mortier+, 2013)
On the functional form of the metallicity-giant planet correlation.
Mortier A., Santos N.C., Sousa S., Israelian G., Mayor M., Udry S.
<Astron. Astrophys. 551, A112 (2013)>
=2013A&A...551A.112M 2013A&A...551A.112M
ADC_Keywords: Stars, nearby ; Abundances ; Stars, masses ;
Effective temperatures
Keywords: methods: statistical - planet-star interactions - stars: abundances
Abstract:
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.
In this paper, we test several scenarios to describe 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). By using
a Bayesian analysis, we can quantitatively compare the different
scenarios.
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 contrarily to what has been previously stated in the
literature. The dependence on stellar mass could not be confirmed,
neither discarded.
Description:
Table 1 contains stellar parameters for all the stars in the CORALIE
sample. Table 2 contains stellar parameters for all the stars in the
HARPS sample.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 33 1216 Parameters for the stars in the CORALIE sample
table2.dat 25 582 Parameters for the stars in the HARPS sample
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Star Star name
12- 16 F5.2 [Sun] [Fe/H] Metallicity
18- 21 F4.2 Msun Mass Stellar mass
23- 29 F7.2 K Teff Effective temperature
31- 33 A3 --- Planet yes = Presence of a giant planet
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Star Star name
12- 16 F5.2 [Sun] [Fe/H] Metallicity
18- 21 F4.2 Msun Mass Stellar mass
23- 25 A3 --- Planet yes = Presence of a giant planet
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Acknowledgements:
Annelies Mortier, Annelies.Mortier(at)astro.up.pt
(End) A. Mortier [CAUP-Porto, Portugal], P. Vannier [CDS] 27-Feb-2013