Spectroscopic parameters for 451 stars in the HARPS GTO planet search program: Stellar [fe/h] and the frequency of exo-neptunes

S. G. Sousa; N. C. Santos; M. Mayor; S. Udry; L. Casagrande; G. Israelian; F. Pepe; D. Queloz; M. J.P.F.G. Monteiro

doi:10.1063/1.3099152

Spectroscopic parameters for 451 stars in the HARPS GTO planet search program: Stellar [fe/h] and the frequency of exo-neptunes

S. G. Sousa, N. C. Santos, M. Mayor, S. Udry, L. Casagrande, G. Israelian, F. Pepe, D. Queloz, M. J.P.F.G. Monteiro

Research output: Contribution to journal › Conference article › peer-review

Abstract

We present a catalogue with accurate stellar parameters for the 451 stars that compose the HARPS Guaranteed Time Observations (GTO) "high precision" sample. We use our results, together with the others found in the literature, to study the metallicity-planet correlation, namely for very low mass planets. The results presented here suggests that contrarily to their jovian couterparts, neptune-like planets do not form preferentially around metal-rich stars. The ratio of jupiter-toneptunes is also an increasing function of stellar metallicity. These results are discussed in the context of the core-accretion model for planet formation.

Original language	English
Pages (from-to)	477-480
Number of pages	4
Journal	AIP Conference Proceedings
Volume	1094
DOIs	https://doi.org/10.1063/1.3099152
Publication status	Published - 2009
Externally published	Yes
Event	15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun - St. Andrews, United Kingdom Duration: 21 Jul 2008 → 25 Jul 2008

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10.1063/1.3099152

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title = "Spectroscopic parameters for 451 stars in the HARPS GTO planet search program: Stellar [fe/h] and the frequency of exo-neptunes",

abstract = "We present a catalogue with accurate stellar parameters for the 451 stars that compose the HARPS Guaranteed Time Observations (GTO) {"}high precision{"} sample. We use our results, together with the others found in the literature, to study the metallicity-planet correlation, namely for very low mass planets. The results presented here suggests that contrarily to their jovian couterparts, neptune-like planets do not form preferentially around metal-rich stars. The ratio of jupiter-toneptunes is also an increasing function of stellar metallicity. These results are discussed in the context of the core-accretion model for planet formation.",

keywords = "Formation, Fundamental parameters, Planetary systems",

author = "Sousa, {S. G.} and Santos, {N. C.} and M. Mayor and S. Udry and L. Casagrande and G. Israelian and F. Pepe and D. Queloz and Monteiro, {M. J.P.F.G.}",

year = "2009",

doi = "10.1063/1.3099152",

language = "English",

volume = "1094",

pages = "477--480",

journal = "AIP Conference Proceedings",

issn = "0094-243X",

publisher = "American Institute of Physics",

note = "15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun ; Conference date: 21-07-2008 Through 25-07-2008",

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TY - JOUR

T1 - Spectroscopic parameters for 451 stars in the HARPS GTO planet search program

T2 - 15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun

AU - Sousa, S. G.

AU - Santos, N. C.

AU - Mayor, M.

AU - Udry, S.

AU - Casagrande, L.

AU - Israelian, G.

AU - Pepe, F.

AU - Queloz, D.

AU - Monteiro, M. J.P.F.G.

PY - 2009

Y1 - 2009

N2 - We present a catalogue with accurate stellar parameters for the 451 stars that compose the HARPS Guaranteed Time Observations (GTO) "high precision" sample. We use our results, together with the others found in the literature, to study the metallicity-planet correlation, namely for very low mass planets. The results presented here suggests that contrarily to their jovian couterparts, neptune-like planets do not form preferentially around metal-rich stars. The ratio of jupiter-toneptunes is also an increasing function of stellar metallicity. These results are discussed in the context of the core-accretion model for planet formation.

AB - We present a catalogue with accurate stellar parameters for the 451 stars that compose the HARPS Guaranteed Time Observations (GTO) "high precision" sample. We use our results, together with the others found in the literature, to study the metallicity-planet correlation, namely for very low mass planets. The results presented here suggests that contrarily to their jovian couterparts, neptune-like planets do not form preferentially around metal-rich stars. The ratio of jupiter-toneptunes is also an increasing function of stellar metallicity. These results are discussed in the context of the core-accretion model for planet formation.

KW - Formation

KW - Fundamental parameters

KW - Planetary systems

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U2 - 10.1063/1.3099152

DO - 10.1063/1.3099152

M3 - Conference article

AN - SCOPUS:64849086187

SN - 0094-243X

VL - 1094

SP - 477

EP - 480

JO - AIP Conference Proceedings

JF - AIP Conference Proceedings

Y2 - 21 July 2008 through 25 July 2008

ER -

Spectroscopic parameters for 451 stars in the HARPS GTO planet search program: Stellar [fe/h] and the frequency of exo-neptunes

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