标题： FGK 22$μ$m 过量恒星在LAMOST DR2恒星目录中 显示英文标题

标题： FGK 22 $μ$m Excess Stars in LAMOST DR2 Stellar Catalog

摘要： 自LAMOST（大型天空面积多目标光纤光谱望远镜）目录发布以来，我们有机会使用LAMOST DR2恒星目录和\emph{WISE全天空目录}来搜索22$\mu$m过量候选体。 在本文中，我们展示了10个FGK候选体，在22$\mu$m的红外（IR）波段显示出过量。这十个源都是新识别的22$\mu$m过量候选体。 在这10颗恒星中，5颗是F型，5颗是G型。 选择候选体的标准是$K_s-[22]_{\mu m}\geq0.387$。 此外，我们给出了覆盖从光学到中红外波段的光谱能量分布（SEDs）。 它们中的大多数在12 $\mu$米波段显示出明显的过量，三个候选体甚至在3.4 $\mu$米波段显示出过量。为了表征尘埃的数量，我们还估算了十位22 $\mu$米过量候选体的分率光度。 显示英文摘要

摘要： 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 $\mu$m excess candidates. In this paper, we present 10 FGK candidates which show an excess in the infrared (IR) at 22 $\mu$m. The ten sources are all the newly identified 22 $\mu$m excess candidates. Of these 10 stars, 5 stars are F type and 5 stars are G type. The criterion for selecting candidates is $K_s-[22]_{\mu m}\geq0.387$. 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 $\mu$m band and three candidates even show excess from 3.4 $\mu$m. To characterize the amount of dust, we also estimate the fractional luminosity of ten 22 $\mu$m excess candidates.