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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dc.contributor.authorSousa, S. G.en
dc.contributor.authorSantos, N. C.en
dc.contributor.authorMayor, M.en
dc.contributor.authorUdry, S.en
dc.contributor.authorCasagrande, L.en
dc.contributor.authorIsraelian, G.en
dc.contributor.authorPepe, F.en
dc.contributor.authorQueloz, D.en
dc.contributor.authorMonteiro, M. J.P.F.G.en
dc.date.accessioned2026-01-01T06:41:11Z
dc.date.available2026-01-01T06:41:11Z
dc.date.issued2009en
dc.description.abstractWe 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.en
dc.description.statusPeer-revieweden
dc.format.extent4en
dc.identifier.issn0094-243Xen
dc.identifier.otherORCID:/0000-0003-2688-7511/work/162948990en
dc.identifier.scopus64849086187en
dc.identifier.urihttps://hdl.handle.net/1885/733798663
dc.language.isoenen
dc.relation.ispartofseries15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sunen
dc.sourceAIP Conference Proceedingsen
dc.subjectFormationen
dc.subjectFundamental parametersen
dc.subjectPlanetary systemsen
dc.titleSpectroscopic parameters for 451 stars in the HARPS GTO planet search program: Stellar [fe/h] and the frequency of exo-neptunesen
dc.typeConference paperen
dspace.entity.typePublicationen
local.bibliographicCitation.lastpage480en
local.bibliographicCitation.startpage477en
local.contributor.affiliationSousa, S. G.; University of Portoen
local.contributor.affiliationSantos, N. C.; University of Portoen
local.contributor.affiliationMayor, M.; University of Genevaen
local.contributor.affiliationUdry, S.; University of Genevaen
local.contributor.affiliationCasagrande, L.; University of Turkuen
local.contributor.affiliationIsraelian, G.; Instituto de Astrofísica de Canariasen
local.contributor.affiliationPepe, F.; University of Genevaen
local.contributor.affiliationQueloz, D.; University of Genevaen
local.contributor.affiliationMonteiro, M. J.P.F.G.; University of Portoen
local.identifier.ariespublicationf5625xPUB13057en
local.identifier.citationvolume1094en
local.identifier.doi10.1063/1.3099152en
local.identifier.pure092f06aa-94c9-4d8d-bd9a-0e565d2ce2eden
local.identifier.urlhttps://www.scopus.com/pages/publications/64849086187en
local.type.statusPublisheden

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