FGK 22 $\mu$m Excess Stars in LAMOST DR2 Stellar Catalog
Abstract
Since the release of LAMOST (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope) catalog, we have the opportunity to use the LAMOST DR2 stellar catalog and \emph{WISE All-sky catalog} to search for 22 m excess candidates. In this paper, we present 10 FGK candidates which show an excess in the infrared (IR) at 22 m. The ten sources are all the newly identified 22 m excess candidates. Of these 10 stars, 5 stars are F type and 5 stars are G type. The criterion for selecting candidates is . In addition, we present the spectral energy distributions (SEDs) covering wavelength from optical to mid-infrared band. Most of them show an obvious excess from 12 m band and three candidates even show excess from 3.4 m. To characterize the amount of dust, we also estimate the fractional luminosity of ten 22 m excess candidates.
Keywords
Cite
@article{arxiv.1603.03296,
title = {FGK 22 $\mu$m Excess Stars in LAMOST DR2 Stellar Catalog},
author = {Chao-Jian Wu and Hong Wu and Kang Liu and Tan-Da Li and Ming Yang and Man I Lam and Fan Yang and Yue Wu and Yong Zhang and Yonghui Hou and Guangwei Li},
journal= {arXiv preprint arXiv:1603.03296},
year = {2016}
}
Comments
11 pages, 5 figures, 1 table. Accepted for publication in RAA