NEW ESTIMATES OF THE INCLINATION, POSITION ANGLE, PITCH ANGLE, AND SCALE HEIGHT OF THE WHIRLPOOL GALAXY
文献类型：期刊论文
| 作者 | Hu, Tao1,2; Shao, Zhengyi3 ; Peng, Qiuhe4
|
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2013-01-10 |
| 卷号 | 762期号:2页码:1 |
| 关键词 | galaxies: individual (M51) galaxies: spiral galaxies: structure |
| 英文摘要 | The inclination (i) and position angle (PA) of the Whirlpool galaxy (M51) are critical to modeling and interpreting observations. Here we make improved estimates of these parameters by fitting logarithmic spirals to the main arms. From separate fits to each major arm, we obtain i = 20 degrees.3 +/- 2 degrees.8 and PA = 12 degrees.0 +/- 2 degrees.5. We then use Poisson's equation for the logarithmic perturbation of the density to estimate the mean vertical scale height (H) of M51 to be 95-178 pc. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | SPIRAL GALAXIES ; STELLAR KINEMATICS ; MILKY-WAY ; M51 ; THICKNESS ; DISKS ; DISTANCES ; DYNAMICS ; REGIONS ; FIELD |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000325876300012 |
| 源URL | [http://119.78.226.72/handle/331011/18042]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Shanghai Univ, Dept Automat, Shanghai 200072, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China 3.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 4.Nanjing Univ, Dept Astron, Nanjing 210093, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Tao,Shao, Zhengyi,Peng, Qiuhe. NEW ESTIMATES OF THE INCLINATION, POSITION ANGLE, PITCH ANGLE, AND SCALE HEIGHT OF THE WHIRLPOOL GALAXY[J]. ASTROPHYSICAL JOURNAL LETTERS,2013,762(2):1. |
| APA | Hu, Tao,Shao, Zhengyi,&Peng, Qiuhe.(2013).NEW ESTIMATES OF THE INCLINATION, POSITION ANGLE, PITCH ANGLE, AND SCALE HEIGHT OF THE WHIRLPOOL GALAXY.ASTROPHYSICAL JOURNAL LETTERS,762(2),1. |
| MLA | Hu, Tao,et al."NEW ESTIMATES OF THE INCLINATION, POSITION ANGLE, PITCH ANGLE, AND SCALE HEIGHT OF THE WHIRLPOOL GALAXY".ASTROPHYSICAL JOURNAL LETTERS 762.2(2013):1. |
入库方式： OAI收割
来源：上海天文台
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