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Disk thickness and spiral arm structure of M31
Hu, Tao1,2,3; Shao, ZY3; Wang M(汪敏)2; Peng, QH4; Hu, T (reprint author), Shanghai Univ, Dept Automat, 149 Yanchang Rd, Shanghai 200072, Peoples R China.
发表期刊NEW ASTRONOMY
2013-10
卷号23-24页码:49-54
DOI10.1016/j.newast.2013.02.001
产权排序第2完成单位
收录类别SCI
关键词Galaxies: Spiral Galaxies: Structure Galaxies: Individual (M31)
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.
项目资助者foundation of Key Laboratory for the Structure and Evolution of Celestial Objects ; Chinese Academy of Sciences [OP201202] ; Innovative Foundation of Shanghai University [A10010909012] ; Chinese Natural Science Foundation [10973028, 10833005, 10878003]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1384-1076
URL查看原文
WOS记录号WOS:000319247200007
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SURFACE PHOTOMETRY ; ANDROMEDA GALAXY ; 3-DIMENSIONAL DISTRIBUTION ; SPITZER MIPS ; STARS ; LIGHT ; PARAMETERS ; MODEL
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5627
专题射电天文研究组
中国科学院天体结构与演化重点实验室
通讯作者Hu, T (reprint author), Shanghai Univ, Dept Automat, 149 Yanchang Rd, Shanghai 200072, Peoples R China.
作者单位1.Department of Automation, Shanghai University, 149 Yanchang Rd., Shanghai 200072, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Yunnan Astronomical Observatory, Fenghuang Mountain, Kunming 650011, China
3.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Rd., Shanghai 200030, China
4.Department of Astronomy, Nanjing University, 22 Hankou Rd., Nanjing 210093, China
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GB/T 7714
Hu, Tao,Shao, ZY,Wang M,et al. Disk thickness and spiral arm structure of M31[J]. NEW ASTRONOMY,2013,23-24:49-54.
APA Hu, Tao,Shao, ZY,Wang M,Peng, QH,&Hu, T .(2013).Disk thickness and spiral arm structure of M31.NEW ASTRONOMY,23-24,49-54.
MLA Hu, Tao,et al."Disk thickness and spiral arm structure of M31".NEW ASTRONOMY 23-24(2013):49-54.
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