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Candidate members of the Pal 5, GD-1, Cetus Polar and Orphan tidal stellar halo streams from SDSS DR9, LAMOST DR3 and APOGEE catalogs
作者: Li Guangwei(李广伟)1; Yanny, Brian2; Zhang Haotong(张昊彤)1; Bai, Zong-Rui1; Wu Yue(吴悦)1; Dong Yiqiao(董义乔)1; Lei Yajuan(雷亚娟)1; Yuan Hailong(袁海龙)1; Hou, Yong-Hui3; Wang, Yue-Fei3; Zhang, Yong3
关键词: Galaxy: structure general: stream ; Galaxy: structure individual (GD-1, Orphan, Cetus, Pal 5)
刊名: RESEARCH IN ASTRONOMY AND ASTROPHYSICS
发表日期: 2017-06-01
DOI: 10.1088/1674-4527/17/6/62
卷: 17, 期:6
文章类型: Article
收录类别: SCI
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: DIGITAL SKY SURVEY ; GALACTIC HALO ; SAGITTARIUS ; GALAXY ; STARS ; SPECTROSCOPY ; TELESCOPE ; CLUSTERS ; SEGUE ; ORBIT
英文摘要: We 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.
语种: 英语
项目资助者: National Natural Science Foundation of China (NSFC)(Y011161001 ; US NSF LAMOST-PLUS grant ; Guangdong Provincial Engineering Technology Research Center for Data Science ; National Development and Reform Commission ; 11403056 ; 11673036 ; 11333004)
WOS记录号: WOS:000408362700014
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内容类型: 期刊论文
URI标识: http://ir.bao.ac.cn/handle/114a11/20140
Appears in Collections:光学天文研究部_期刊论文

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作者单位: 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
2.Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
3.Chinese Acad Sci, Nanjing Inst Astron Opt & Technol, Natl Astron Observ, Nanjing 210042, Jiangsu, Peoples R China

Recommended Citation:
Li, Guang-Wei,Yanny, Brian,Zhang, Hao-Tong,et al. Candidate members of the Pal 5, GD-1, Cetus Polar and Orphan tidal stellar halo streams from SDSS DR9, LAMOST DR3 and APOGEE catalogs[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2017,17(6).
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