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Kinematic and chemical properties of five open clusters based on SDSS DR7

文献类型：期刊论文

作者Gao, Xin-Hua1,2,3; Chen, Li1,3
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2010-08-01
卷号10期号:8页码:761-776
关键词open clusters and associations: general open clusters and associations: individual (NGC 6791 NGC 2420 NGC 2682 NGC 2158 NGC 7789)
英文摘要We present metallicities and radial velocities for five old open clusters (NGC 6791, NGC 2420, NGC 2682, NGC 2158, and NGC 7789) using data from the seventh public data release of the Sloan Digital Sky Survey (SDSS), which includes the directed stellar program SEGUE: Sloan Extension For Galactic Understanding and Exploration. The radial velocities are used to calculate cluster membership probabilities for stars in each cluster region. NGC 6791, NGC 2420, NGC 2682, NGC 2158 and NGC 7789 are found to have mean metallicities [Fe/H]= +0.08 +/- 0.09, -0.38 +/- 0.11, -0.08 +/- 0.05, -0.41 +/- 0.13 and -0.19 +/- 0.13 dex (s.d.), respectively. The mean radial velocities for NGC 6791, NGC 2420, NGC 2682, NGC 2158 and NGC 7789 are V(r) = -45.9 +/- 0.2, + 76.1 +/- 0.2, +35.0 +/- 0.2, +26.9 +/- 0.2 and -48.2 +/- 0.2 km s(-1)(s.e.m.), respectively. We have compared our results with the values from literatures, and found that our metallicity of NGC 6791 is significantly underestimated (by about 0.3 dex) and our radial velocities of the open clusters agree well with the values derived using high-resolution spectroscopy.
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
关键词[WOS]OLD OPEN CLUSTERS ; DIGITAL SKY SURVEY ; RICH OPEN CLUSTER ; AGE-METALLICITY RELATION ; COLOR-MAGNITUDE DIAGRAM ; BETA CCD PHOTOMETRY ; RED GIANT STARS ; NGC 7789 ; RADIAL-VELOCITIES ; METAL-RICH
收录类别SCI
语种英语
WOS记录号WOS:000281136200006
公开日期2015-02-02
源URL[http://119.78.226.72//handle/331011/15515]  
专题上海天文台_星系宇宙学重点实验室
作者单位1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Key Lab Astrophys, Shanghai 200234, Peoples R China
推荐引用方式
GB/T 7714		 Gao, Xin-Hua,Chen, Li. Kinematic and chemical properties of five open clusters based on SDSS DR7[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2010,10(8):761-776.
APA Gao, Xin-Hua,&Chen, Li.(2010).Kinematic and chemical properties of five open clusters based on SDSS DR7.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,10(8),761-776.
MLA Gao, Xin-Hua,et al."Kinematic and chemical properties of five open clusters based on SDSS DR7".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 10.8(2010):761-776.

入库方式： OAI收割

来源：上海天文台

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