SIMBAD references

2011ApJ...735...41P - Astrophys. J., 735, 41 (2011/July-1)

Carbon and oxygen in nearby stars: keys to protoplanetary disk chemistry.


Abstract (from CDS):

We present carbon and oxygen abundances for 941 FGK stars–the largest such catalog to date. We find that planet-bearing systems are enriched in these elements. We self-consistently measure NC/NO, which is thought to play a key role in planet formation. We identify 46 stars with NC/NO ≥ 1.00 as potential hosts of carbon-dominated exoplanets. We measure a downward trend in [O/Fe] versus [Fe/H] and find distinct trends in the thin and thick disks, supporting the work of Bensby et al. Finally, we measure sub-solar NC/NO= 0.40+0.11_- 0.07_, for WASP-12, a surprising result as this star is host to a transiting hot Jupiter whose dayside atmosphere was recently reported to have NC/NO ≥ 1 by Madhusudhan et al. Our measurements are based on 15,000 high signal-to-noise spectra taken with the Keck 1 telescope as part of the California Planet Search. We derive abundances from the [O I] and C I absorption lines at λ = 6300 and 6587 Å using the SME spectral synthesizer.

Abstract Copyright:

Journal keyword(s): catalogs - planetary systems - stars: abundances - stars: fundamental parameters - techniques: spectroscopic

VizieR on-line data: <Available at CDS (J/ApJ/735/41): table6.dat>

Simbad objects: 944

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