Special Issue for LAMOST Sciences

Searching for classical Be stars in LAMOST DR1

Chien-Cheng Lin, Jin-Liang Hou, Li Chen, Zheng-Yi Shao, Jing Zhong, Po-Chieh Yu


Abstract We report on searching for Classical B-type emission-line (CBe) stars in the first data release of the Large Sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST; also called the Guo Shou Jing Telescope). A total of 192 objects (including 12 previously known CBes) were identified as CBe candidates with prominent He I λ4387, He I λ4471 and Mg II λ4481 absorption lines, as well as Hβ λ4861 and Hα λ6563 emission lines. These candidates significantly increase the currently known sample of CBes by about 8%. Most of the CBe candidates are distributed near the Galactic Anti-Center due to the observing strategy used for LAMOST. Only two CBes are in star clusters. These two CBes have ages of 15.8 and 398 Myr, respectively.


Keywords stars: emission-line — Be — stars: early-type — open clusters and asso- ciations: general

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