Intergalactic stellar distributions in the interacting M81/M82 galaxy group
文献类型：期刊论文
| 作者 | Sun, WH; Chen, JS; Jiang, ZJ; Byun, YI; Ma, J ; Windhorst, RA; Burstein, D; Chen, WP; Zhou, X
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2005-09-10 |
| 卷号 | 630期号:2页码:L133-L136 |
| 关键词 | Intergalactic Medium Galaxies : Individual (M81 M82) |
| 英文摘要 | Previous H (I) observations of the M81/ M82/ NGC 3077 galaxy group clearly show a widespread H (I) distribution within this galaxy group. While the gas is vulnerable to tidal disruption from a galaxy encounter, are there also stars embedded in this H (I) distribution? Our deep, 1 deg(2) exposures of the M81/ M82 group in 10 optical bands using the Beijing- Arizona- Taipei- Connecticut ( BATC) filter set clearly reveal widespread stellar distributions that coincide with the atomic hydrogen clouds - considered to be the relics of the merging process of the galaxies splayed over the region. The spectral energy distributions of the stellar groups to the east and west of M81 ( including the " Arp Loop") are similar to that measured at the southeast edge of the optical disk of M82. This similarity in stellar radiation, combined with the observed peculiar rotational velocity of M82, suggests that the diffuse stellar population in the intergalactic space around M81 is possibly a relic of the tidally disrupted disk of M82 during the last close encounter. Alternately, the stars could have formed in situ in the H (I) as it was drawn out of the galaxies. Recent measurements of distances to and radial velocities of M81 ( 3.63 Mpc and 48 km s (-1), respectively) and M82 ( 3.9 Mpc and 296 km s (-1)) lend further support to the notion of a close passage between these two galaxies several hundred million years ago. |
| 语种 | 英语 |
| WOS记录号 | WOS:000231664600008 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8935]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Natl Cent Univ, Inst Astron, Chungli 32054, Taiwan 2.Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 4.Yonsei Univ, Dept Astron, Seoul 120749, South Korea |
| 推荐引用方式 GB/T 7714 | Sun, WH,Chen, JS,Jiang, ZJ,et al. Intergalactic stellar distributions in the interacting M81/M82 galaxy group[J]. ASTROPHYSICAL JOURNAL,2005,630(2):L133-L136. |
| APA | Sun, WH.,Chen, JS.,Jiang, ZJ.,Byun, YI.,Ma, J.,...&Zhou, X.(2005).Intergalactic stellar distributions in the interacting M81/M82 galaxy group.ASTROPHYSICAL JOURNAL,630(2),L133-L136. |
| MLA | Sun, WH,et al."Intergalactic stellar distributions in the interacting M81/M82 galaxy group".ASTROPHYSICAL JOURNAL 630.2(2005):L133-L136. |
入库方式： OAI收割
来源：国家天文台
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