Molecular Gas of the Most Massive Spiral Galaxies. I. A Case Study of NGC 5908
文献类型：期刊论文
| 作者 | Li, Jiang-Tao1; Zhou, Ping2; Jiang, Xuejian3; Bregman, Joel N.1; Gao, Yu3
|
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2019-05-20 |
| 卷号 | 877期号:1页码:12 |
| ISSN号 | 0004-637X |
| 关键词 | galaxies: individual (NGC 5908) galaxies: ISM galaxies: spiral galaxies: star formation intergalactic medium ISM: molecules |
| DOI | 10.3847/1538-4357/ab1851 |
| 通讯作者 | Li, Jiang-Tao() |
| 英文摘要 | We present IRAM 30 m observations of molecular lines of CO and its isotopologues from the massive spiral galaxy NGC 5908 selected from the CGM-MASS sample. (CO)-C-12 J = 1 - 0, (CO)-C-12 J = 2 - 1 and (CO)-C-13 J = 1 - 0 lines have been detected in most of the positions along the galactic disk. The total molecular gas mass of NGC 5908 is similar to 7 x 10(9) M-circle dot and the total cool gas mass adding atomic hydrogen is similar to 1.3 x 10(10 )M(circle dot), comparable to the upper limit of the mass of the X-ray emitting hot gas in the halo. Modeling the rotation curves constructed with all three CO lines indicates that NGC 5908 has a dark matter halo mass of M-vir similar to 10(13) M-circle dot, putting it among the most massive isolated spiral galaxies. The (CO)-C-12/(CO)-C-13 J = 1 - 0,(CO)-C- 12 J = 2 - 1/J = 1 - 0 line ratios and the estimated molecular gas temperature all indicate normal but non-negligible star formation in this fairly gas-rich massive isolated spiral galaxy, consistent with the measured star formation intensity and surface densities. The galaxy is probably at an early evolutionary stage after a fast growth stage with mergers and/or starbursts, with plenty of leftover cool gas, relatively high SFR, low hot CGM cooling rate, and low X-ray emissivity. |
| WOS关键词 | INCLINED DISC GALAXIES ; STAR-FORMATION ; CHANDRA SURVEY ; MILKY-WAY ; CO ; STARBURST ; FEEDBACK ; INSIGHTS ; RATIOS ; ENERGY |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000468279600003 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/26663]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Li, Jiang-Tao |
| 作者单位 | 1.Univ Michigan, Dept Astron, 311 West Hall,1085 S Univ Ave, Ann Arbor, MI 48109 USA 2.Univ Amsterdam, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands 3.Chinese Acad Sci, Key Lab Radio Astron, Purple Mt Observ, Nanjing 210034, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Jiang-Tao,Zhou, Ping,Jiang, Xuejian,et al. Molecular Gas of the Most Massive Spiral Galaxies. I. A Case Study of NGC 5908[J]. ASTROPHYSICAL JOURNAL,2019,877(1):12. |
| APA | Li, Jiang-Tao,Zhou, Ping,Jiang, Xuejian,Bregman, Joel N.,&Gao, Yu.(2019).Molecular Gas of the Most Massive Spiral Galaxies. I. A Case Study of NGC 5908.ASTROPHYSICAL JOURNAL,877(1),12. |
| MLA | Li, Jiang-Tao,et al."Molecular Gas of the Most Massive Spiral Galaxies. I. A Case Study of NGC 5908".ASTROPHYSICAL JOURNAL 877.1(2019):12. |
入库方式： OAI收割
来源：紫金山天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。