Chemical analysis of 8 recently discovered extra-solar planet host stars

G. Israelian (IAC); M. Mayor (Observatoire de Geneve); N.C.Santos (Observatoire de Geneve)

Chemical analysis of 8 recently discovered extra-solar planet host stars

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arxiv astro-ph/0009182 v1 pith:6DSAZSRK submitted 2000-09-12 astro-ph

N.C.Santos (Observatoire de Geneve) , G. Israelian (IAC) , M. Mayor (Observatoire de Geneve) This is my paper · ORCID

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keywords starsdistributionplanetsanalysischemicalextra-solarmetallicityabundances

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We present the chemical analysis of a new set of stars known to harbor low mass companions, namely HD 1237, HD 52265, HD 82943, HD 83443, HD 169830, and HD 202206. In addition, we have also analyzed HD 13445 and HD 7528}, already studied elsewhere. The abundances of C and alpha-elements O, S, Si, Ca and Ti are presented and discussed in the context of the metallicity distribution of the stars with extra-solar planets. We compare the metallicity distribution of stars with planets with the same distribution of field dwarfs. The results further confirm that stars with planets are over-abundant in [Fe/H].

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Chemical Abundances of the Bioessential Elements C, O and S, and the Refractory Elements Fe and Ni, in Solar-type Exoplanet-hosting Stars from HARPS North and South
astro-ph.EP 2026-06 unverdicted novelty 4.0 of 10

Observational study of 290 exoplanet-host stars finds higher C, O, S, Fe, Ni abundances in giant-planet hosts than small-planet hosts, with C/O ratios, hot/warm differences, and mass correlations that vary by subpopulation.

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