Behavior of sulfur abundances in halo stars observed with HIDES at OAO

Details Behavior of sulfur abundances in halo stars observed with HIDES at OAO Behavior of sulfur abundances in halo stars observed with HIDES at OAO

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hia....13..590t&link_type=abstract

In: Highlights of Astronomy, Vol. 13, as presented at the XXVth General Assembly of the IAU - 2003 [Sydney, Australia, 13 - 26 J

Astronomy and Astrophysics

Astronomy

Stellar Abundances

Scientific paper

LTE and non-LTE (NLTE) abundances of sulfur (S) are explored in 22 metal-poor stars within the metallicity range of -3 < [Fe/H] < -0.5 using high-resolution spectra of the S I (multiplet 6) (8693.9 8694.6 A) and S I (1) (9212.9 9228.1 9237.5 A) lines observed with HIDES at Okayama Astophysical Observatory. NLTE effects in S abundances are found to be small for S I (6) weak lines while they are large for S I (1) strong lines with the maximum NLTE correction of about 0.4 dex. We will discuss the behavior of S abundances based on NLTE analysis.

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