SIMBAD references

2007AJ....133.2464L - Astron. J., 133, 2464-2486 (2007/June-0)

Giants in the local region.


Abstract (from CDS):

We present parameter and abundance data for a sample of 298 nearby giants. The spectroscopic data for this work have a resolution of R∼60,000, S/N>150, and spectral coverage from 475 to 685 nm. Overall trends in the Z>10 abundances are dominated by Galactic chemical evolution, while the light-element abundances are influenced by stellar evolution, as well as Galactic evolution. We find several super-Li stars in our sample and confirm that Li abundances in the first giant branch are related to mixing depths. Once astration of lithium on the main sequence along with the overall range of main-sequence lithium abundances are taken into account, the lithium abundances of the giants are not dramatically at odds with the predictions of standard stellar evolution. We find the giants to be carbon-diluted in accord with standard stellar evolution and that the carbon and oxygen abundances determined for the local giants are consistent with those found in local field dwarfs. We find that there is evidence for systematic carbon variations in the red giant clump in the sense that the blue side of the clump is carbon-poor (more diluted) than the red side.

Abstract Copyright:

Journal keyword(s): Galaxy: Solar Neighborhood - Stars: Abundances - Stars: Late-Type

VizieR on-line data: <Available at CDS (J/AJ/133/2464): table1.dat table2.dat table3.dat table4a.dat table4b.dat table4c.dat table4d.dat table6.dat table7.dat>

Simbad objects: 300

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