FGK 22 μm excess stars in LAMOST DR2 stellar catalog
Wu Chaojian1; Wu Hong1; Liu Kang2; Li Tanda1; Yang Ming1; Lam Mani1; Yang Fan1; Wu Yue1; Zhang Yong3; Hou Yonghui3; Li Guangwei1
Source PublicationResearch in Astronomy and Astrophysics
AbstractSince the release of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) catalog, we have had the opportunity to use the LAMOST DR2 stellar catalog and the WISE All-Sky Data Release catalog to search for 22 μm excess candidates. In this paper, we present 10 FGK candidates which show an excess in the infrared at 22 μm. All the 10 sources are newly identified 22 μm excess candidates. Of these 10 stars, five stars are F type and five stars are G type. The criterion for selecting candidates is K_s - 22 ≥ 0.387. In addition, we present the spectral energy distributions covering wavelengths from the optical to mid-infrared band. Most of them show an obvious excess from the 12 μm band and three candidates even show excess from 3.4 μm. To characterize the amount of dust, we also estimate the fractional luminosity of 10 22 μm excess candidates.
Keywordinfrared: planetary systems stars: formation planetary systems: protoplanetary disks
Document Type期刊论文
3.National Astronomical Observatories
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wu Chaojian,Wu Hong,Liu Kang,et al. FGK 22 μm excess stars in LAMOST DR2 stellar catalog[J]. Research in Astronomy and Astrophysics,2016,16(7):102_01.
APA Wu Chaojian.,Wu Hong.,Liu Kang.,Li Tanda.,Yang Ming.,...&Li Guangwei.(2016).FGK 22 μm excess stars in LAMOST DR2 stellar catalog.Research in Astronomy and Astrophysics,16(7),102_01.
MLA Wu Chaojian,et al."FGK 22 μm excess stars in LAMOST DR2 stellar catalog".Research in Astronomy and Astrophysics 16.7(2016):102_01.
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