Carbon Stars from LAMOST DR2 Data
Carbon Stars from LAMOST DR2 Data
复制标题
LAMOST DR2 数据中的碳星
DOI:
10.3847/0067-0049/226/1/1
复制
发表时间:
2016-06
期刊:
影响因子:
--
通讯作者:
Zhang Bo
中科院分区:
文献类型:
--
作者:
Ji Wei;Cui Wenyuan;Liu Chao;Luo Ali;Zhao Gang;Zhang Bo
In this work, we present the new catalog of carbon stars from the LAMOST DR2 catalog. In total, 894 carbon stars are identified from multiple line indices measured from the stellar spectra. We are able to identify the carbon stars by combining the CN bands in the red end with C2 and other lines. Moreover, we also classify the carbon stars into spectral sub-types of C-H, C-R, and C-N. These sub-types show distinct features in the multi-dimensional line indices, implying that in the future they can be used to identify carbon stars from larger spectroscopic data sets. While the C-N stars are clearly separated from the others in the line index space, we find no clear separation between the C-R and C-H sub-types. The C-R and C-H stars seem to smoothly transition from one to another. This may hint that the C-R and C-H stars may not be different in their origins, instead their spectra look different because of different metallicities. Due to the relatively low spectral resolution and lower signal-to-noise ratio, the ratio of 12C/13C is not measured and thus the C-J stars are not identified.
登录
查看更多内容
DOI:
10.1086/162671
发表时间:
1984-12
期刊:
The Astrophysical Journal
影响因子:
--
作者:
H. Richer;D. Crabtree;C. Pritchet
通讯作者:
H. Richer;D. Crabtree;C. Pritchet
DOI:
10.1086/383211
发表时间:
2004-02
期刊:
The Astronomical Journal
影响因子:
--
作者:
R. Downes;B. Margon;S. Anderson;H. Harris;G. Knapp;Joshua Schroeder;D. Schneider;D. York;J. Pier;J. Brinkmann
通讯作者:
R. Downes;B. Margon;S. Anderson;H. Harris;G. Knapp;Joshua Schroeder;D. Schneider;D. York;J. Pier;J. Brinkmann
影响因子:
6.5
作者:
L. Piersanti;R. Cabezón;O. Zamora;I. Domínguez;D. García-Senz;C. Abia;O. Straniero
通讯作者:
L. Piersanti;R. Cabezón;O. Zamora;I. Domínguez;D. García-Senz;C. Abia;O. Straniero
影响因子:
8.7
作者:
G. Worthey
通讯作者:
G. Worthey
DOI:
10.1088/0004-637x/765/1/12
发表时间:
2013-01
期刊:
The Astrophysical Journal
影响因子:
--
作者:
P. Green
通讯作者:
P. Green