Hostname: page-component-cc8bf7c57-qfg88 Total loading time: 0 Render date: 2024-12-12T06:29:49.885Z Has data issue: false hasContentIssue false

New extra-solar planets: the metallicity distribution revisited

Published online by Cambridge University Press:  26 May 2016

Nuno C. Santos
Affiliation:
Observatoire de Genève, CH1290 Sauverny, Switzerland
Garik Israelian
Affiliation:
Instituto de Astrofisica de Canarias, 38200 La Laguna, Tenerife, Spain
Michel Mayor
Affiliation:
Observatoire de Genève, CH1290 Sauverny, Switzerland

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We present the spectroscopy results of a new set of planetary host stars discovered in the context of the Geneva extra-solar planet search programme. The analysis was based on high S/N spectra obtained with the CORALIE spectrograph at the 1.2-m Euler Swiss Telescope (at La Silla, ESO). We revisit the metallicity distribution of stars with planets. The present sample, largely enriched by the inclusion of the most recent discoveries, strongly suggests that stars with planets are anomalously metal rich, but that the source of the metallicity excess is most probably “primordial”.

Type
Part I: Discovery and study of extrasolar planets - current
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

D'Antona, F., & Mazzitelli, I. 1994, ApJS, 90, 467.CrossRefGoogle Scholar
Favata, F., Micela, G., & Sciortino, S. 1997, A&A, 323, 809.Google Scholar
Gonzalez, G. 1998, A&A, 334, 221.Google Scholar
Kurucz, R.L., Furenlid, I., Brault, J., & Testerman, L. 1984, Solar Flux Atlas from 296 to 1300 nm, NOAO Atlas No. 1.Google Scholar
Santos, N.C., Israelian, G., & Mayor, M. 2000, A&A, in press.Google Scholar
Sneden, C., 1973, , University of Texas.Google Scholar
Zuckerman, B., Forveille, T., & Kastner, J.H. 1995, Nature, 373, 494.CrossRefGoogle Scholar