Star formation histories within the Antennae galaxies (Arp 244)
文献类型：期刊论文
| 作者 | Zhang, Hong-Xin1,2; Gao, Yu1 ; Kong, Xu3
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2010-01-21 |
| 卷号 | 401期号:3页码:1839-1849 |
| 关键词 | galaxies: individual: Antennae galaxies: interactions galaxies: photometry galaxies: starburst galaxies: stellar content |
| ISSN号 | 0035-8711 |
| 英文摘要 | With the imagery from Galaxy Evolution Explorer, Hubble Space Telescope, Two Micron All Sky Survey and Spitzer and at the resolution of Multiband Imaging Photometer for Spitzer (MIPS) 24 mu m (similar to 6 arcsec), we study the variations of the broad-band spectral energy distributions of star-forming regions within the nearest prototypal major merger - the Antennae galaxies. By including MIPS 24 mu m dust emission into stellar population analysis, we reliably, albeit roughly, constrain the star formation histories of these 24 mu m selected star-forming regions across the merging discs of the Antennae. Our population analysis is consistent with the star formation scenario that most regions across the whole system are at a modest level of star formation with the exception of some localized intense starburst sites in the well-known overlap regions and the western-loop regions of northern galaxy NGC 4038. Compared with all the other regions, the young overlap regions currently (< 10 Myr) are experiencing much more violent enhancement of star formation. Across the overlap regions, we suggest two sequential star formation paths which we interpret as the imprints of the interpenetrating process of the two merging discs following their second close encounter. Furthermore, we suggest that the star formation in the southern and (especially) north-western edges of the overlap zone may have been just triggered by pre-starburst shocks. The well-known mid-infrared 'hotspot' in the overlap regions is also a 'hotspot' at 4.5 mu m, whose total 4.5 mu m emission (>= 80 per cent from both hot dust and atomic/molecular lines) is comparable with that of the two galactic nuclei. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | LUMINOUS INFRARED GALAXIES ; SPITZER-SPACE-TELESCOPE ; COMPACT HII-REGIONS ; FORMING GALAXIES ; MOLECULAR-COMPLEXES ; STELLAR POPULATIONS ; INTERSTELLAR-MEDIUM ; ISO SPECTROSCOPY ; SPIRAL GALAXIES ; REDSHIFT SURVEY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000273550500034 |
| 公开日期 | 2011-11-23 |
| 源URL | [http://159.226.72.40/handle/332002/1135]  |
| 专题 | 紫金山天文台_星系中的恒星形成研究团组 |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China 3.Univ Sci & Technol China, Ctr Astrophys, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Hong-Xin,Gao, Yu,Kong, Xu. Star formation histories within the Antennae galaxies (Arp 244)[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2010,401(3):1839-1849. |
| APA | Zhang, Hong-Xin,Gao, Yu,&Kong, Xu.(2010).Star formation histories within the Antennae galaxies (Arp 244).MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,401(3),1839-1849. |
| MLA | Zhang, Hong-Xin,et al."Star formation histories within the Antennae galaxies (Arp 244)".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 401.3(2010):1839-1849. |
入库方式： OAI收割
来源：紫金山天文台
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