NAOC Open IR
candidatemembersofthepal5gd1cetuspolarandorphantidalstellarhalostreamsfromsdssdr9lamostdr3andapogeecatalogs
Li Guangwei1; Yanny Brian2; Zhang Haotong1; Bai Zongrui1; Wu Yue1; Dong Yiqiao1; Lei Yajuan1; Yuan Hailong1; Hou Yonghui3; Wang Yuefei3; Zhang Yong3
2017
Source Publicationresearchinastronomyandastrophysics
ISSN1674-4527
Volume17Issue:6Pages:62_01
AbstractWe present candidate members of the pal 5, gd-1, cetus polar and orphan tidal stellar streams found in lamost dr3, sdss dr9 and apogee catalogs. in lamost dr3, we find 20, 4 and 24 high confidence candidates of tidal streams gd-1, cetus polar and orphan respectively. we also list 59, 118 and 10 high confidence candidates of tidal streams cetus polar, orphan and pal 5, respectively from the sdss dr9 spectroscopic catalog. furthermore, we find seven high confidence candidates of the pal 5 tidal stream in the apogee data. compared with sdss, the new candidates from lamost dr3 are brighter, so that together, more of the color-magnitude diagram, including the giant branch, can be explored. analysis of the sdss data shows that there are three metallicity peaks associated with the orphan stream which also exhibit some spatial separation. the lamost data confirm multiple metallicities in this stream. the metallicity, given by the higher resolution apogee instrument, of the pal 5 tidal stream is fe/h similar to -1.2, higher than that given earlier by sdss spectra. many previously unidentified stream members are tabulated here for the first time, along with existing members, allowing future researchers to further constrain the orbits of these objects as they move within the galaxy's dark matter potential.
Language英语
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/39979
Collection中国科学院国家天文台
Affiliation1.中国科学院国家天文台
2.Fermi National Accelerator Laboratory
3.中铁一局集团第五工程有限公司
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li Guangwei,Yanny Brian,Zhang Haotong,et al. candidatemembersofthepal5gd1cetuspolarandorphantidalstellarhalostreamsfromsdssdr9lamostdr3andapogeecatalogs[J]. researchinastronomyandastrophysics,2017,17(6):62_01.
APA Li Guangwei.,Yanny Brian.,Zhang Haotong.,Bai Zongrui.,Wu Yue.,...&Zhang Yong.(2017).candidatemembersofthepal5gd1cetuspolarandorphantidalstellarhalostreamsfromsdssdr9lamostdr3andapogeecatalogs.researchinastronomyandastrophysics,17(6),62_01.
MLA Li Guangwei,et al."candidatemembersofthepal5gd1cetuspolarandorphantidalstellarhalostreamsfromsdssdr9lamostdr3andapogeecatalogs".researchinastronomyandastrophysics 17.6(2017):62_01.
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