The chemical composition of stars with extrasolar planetary systems

Details The chemical composition of stars with extrasolar planetary systems The chemical composition of stars with extrasolar planetary systems

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005an....326.1053i&link_type=abstract

Astronomische Nachrichten, Vol.326, Issue 10, p.1053-1056

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Stars, Solar-Type Stars, Extra-Solar Planets, Abundances

Scientific paper

Spectroscopic studies of stars with and without planetary systems have concluded that planet hosts are more metal-rich. This enrichment is also seen in the other chemical elements studied and is likely to be primordial in nature. Interesting trends of different chemical elements begin to appear as the number of extrasolar planets continues to grow. I present our current knowledge concerning the observed abundance trends of chemical elements in planet hosts and their possible implications. In most cases the abundance trends of planet host stars are identical to those of the comparison sample. However, some exceptions (such as Li) have been reported too. No clear correlation was found between orbital parameters of planets and host star metallicity.

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