Kinematic and chemical properties of five open clusters based on SDSS DR7
文献类型：期刊论文
| 作者 | Gao XinHua2; Chen Li2
|
| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2010 |
| 卷号 | 10期号:8页码:761 |
| 关键词 | 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 open clusters and associations: general open clusters and associations: individual (NGC 6791, NGC 2420, NGC 2682, NGC 2158, NGC 7789) |
| ISSN号 | 1674-4527 |
| 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. |
| 资助项目 | [National Natural Science Foundation of China] ; [Key Project] ; [Group Innovation] ; [973 program] |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/62492]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.中国科学院 2.中国科学院国家天文台 3.Key Lab Astrophys, Shanghai 200234, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao XinHua,Chen Li. Kinematic and chemical properties of five open clusters based on SDSS DR7[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2010,10(8):761. |
| APA | Gao XinHua,&Chen Li.(2010).Kinematic and chemical properties of five open clusters based on SDSS DR7.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,10(8),761. |
| MLA | Gao XinHua,et al."Kinematic and chemical properties of five open clusters based on SDSS DR7".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 10.8(2010):761. |
入库方式： OAI收割
来源：国家天文台
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