Other
Scientific paper
Nov 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ycat..34490127z&link_type=abstract
VizieR On-line Data Catalog: J/A+A/449/127. Originally published in: 2006A&A...449..127Z
Other
Stars: Dwarfs, Stars: Metal-Deficient, Abundances: Peculiar
Scientific paper
We present photospheric abundances of the O, Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Ni, and Ba elements for 32 mildly metal-poor stars with [Fe/H]~-0.7. High resolution and high signal-to-noise ratio spectra were obtained with the Coude Echelle Spectrograph mounted on the 2.16m telescope at the National Astronomical Observatories (Xinglong, China) on 10 nights during 1999. Effective temperatures were estimated from colour indices, and surface gravities from Hipparcos parallaxes. Stellar abundances were determined from a differential LTE analysis. Our element abundance results extend and confirm previous works. The oxygen and other alpha-elements (Mg, Si, Ca, and Ti) abundances of thin and thick disk stars show distinct trends at [Fe/H]<-0.60. The [Al/Fe] behaviour is exactly as an alpha-element, although the separation for [Na/Fe] of thin and thick disk stars is not clear. The elements V, Cr, and Ni follow Fe very closely, and there is no offset between thin and thick disk stars, but the Sc and Mn abundance trends of the thin and thick disk stars are different, and [Ba/Fe] of thin disk and thick disk stars shows different behaviour.
(3 data files).
Zhang Han-Wei
Zhao Gang
No associations
LandOfFree
Chemical abundances of 32 mildly metal-poor stars (Zhang+, 2006) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Chemical abundances of 32 mildly metal-poor stars (Zhang+, 2006), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chemical abundances of 32 mildly metal-poor stars (Zhang+, 2006) will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1733726