Disk thickness and spiral arm structure of M31
文献类型：期刊论文
| 作者 | Hu, Tao1,2,3; Shao, Zhengyi3 ; Wang, Min2; Peng, Qiuhe4
|
| 刊名 | NEW ASTRONOMY
 |
| 出版日期 | 2013-10-01 |
| 卷号 | 23-24期号:1页码:49-54 |
| 关键词 | Galaxies: spiral Galaxies: structure Galaxies: individual (M31) |
| 英文摘要 | The objective of this work is to obtain the disk thickness and spiral arm structure of M31. The method to estimate the thickness of galactic disk is based on using Poisson's equation for the logarithmical matter density in three-dimensional disk galaxies. We use new infrared image of M31 at 24 mu m taken with the Multiband Imaging Photometer for Spitzer (MIPS). Far infrared images would be free of blurring by the bright bulge, so that the spiral arms can be traced inwards to smaller radii (the forbidden radii). We investigate the fitting of a two-armed (a- and b-arm) spiral structure of M31 by logarithmical spirals. From a-arm structure, we acquire the disk inclination gamma(a) = 74.5 +/- 1.5 degrees, and from b-arm structure, gamma(b) = 70.3 +/- 2.0 degrees. The mean values for the forbidden radius (r) over bar (0), the winding parameter (Lambda) over bar, and the disk thickness (H) over bar are 2.82 +/- 0.23 kpc, 12.49 +/- 1.50, and 0.45 +/- 0.09 kpc, respectively. (C) 2013 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | SURFACE PHOTOMETRY ; ANDROMEDA GALAXY ; 3-DIMENSIONAL DISTRIBUTION ; SPITZER MIPS ; STARS ; LIGHT ; PARAMETERS ; MODEL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000319247200007 |
| 源URL | [http://119.78.226.72/handle/331011/18054]  |
| 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, Yunnan Astron Observ, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China 3.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 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,Wang, Min,et al. Disk thickness and spiral arm structure of M31[J]. NEW ASTRONOMY,2013,23-24(1):49-54. |
| APA | Hu, Tao,Shao, Zhengyi,Wang, Min,&Peng, Qiuhe.(2013).Disk thickness and spiral arm structure of M31.NEW ASTRONOMY,23-24(1),49-54. |
| MLA | Hu, Tao,et al."Disk thickness and spiral arm structure of M31".NEW ASTRONOMY 23-24.1(2013):49-54. |
入库方式： OAI收割
来源：上海天文台
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