We report the results of a search for candidate Li-rich giants among 569,738 stars of the SDSS DR10 dataset. With small variations, our approach is based on that taken in an earlier search for EMP/CEMP stars and uses the same dataset. As part of our investigation, we demonstrate a method for separating post-main sequence and main sequence stars cooler than Teff ~ 5800 K using our feature strength measures of the Sr II 4078, Fe I 4072, and Ca I 4227 lines. By taking carefully selected cuts in a multi-dimensional phase space, we isolate a sample of potential Li-rich giant stars. From these, using detailed comparison with dwarf and giant MILES stars, and our own individual spectral classifications, we identify a set of high likelihood candidate Li-rich giant stars. We offer these for further study to promote an understanding of these enigmatic objects.
@article{arxiv.1806.10295,
title = {A Search for Candidate Li-Rich Giant Stars in SDSS DR10},
author = {Duane F. Carbon and Richard O. Gray and Bron C. Nelson and Christopher Henze},
journal= {arXiv preprint arXiv:1806.10295},
year = {2018}
}
Comments
Accepted for publication in the Astronomical Journal