Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.3354/cr01444 |
Star formation inside a galactic outflow | |
Maiolino, R.1,2; Russell, H. R.3; Fabian, A. C.3; Carniani, S.1,2; Gallagher, R.1,2; Cazzoli, S.4; Arribas, S.4; Belfiore, F.1,2; Bellocchi, E.4; Colina, L.4; Cresci, G.5; Ishibashi, W.6; Marconi, A.5,7; Mannucci, F.5; Oliva, E.5; Sturm, E.8 | |
2017-04-13 | |
发表期刊 | NATURE |
ISSN | 0028-0836 |
EISSN | 1476-4687 |
出版年 | 2017 |
卷号 | 544期号:7649页码:202-+ |
文章类型 | Article |
语种 | 英语 |
国家 | England; Spain; Italy; Switzerland; Germany |
英文摘要 | Recent observations have revealed massive galactic molecular outflows(1-3) that may have the physical conditions (high gas densities(4-6)) required to form stars. Indeed, several recent models predict that such massive outflows may ignite star formation within the outflow itself(7-11). This star-formation mode, in which stars form with high radial velocities, could contribute to the morphological evolution of galaxies(12), to the evolution in size and velocity dispersion of the spheroidal component of galaxies(11,13), and would contribute to the population of high-velocity stars, which could even escape the galaxy(13). Such star formation could provide in situ chemical enrichment of the circumgalactic and intergalactic medium (through supernova explosions of young stars on large orbits), and some models also predict it to contribute substantially to the star-formation rate observed in distant galaxies9. Although there exists observational evidence for star formation triggered by outflows or jets into their host galaxy, as a consequence of gas compression, evidence for star formation occurring within galactic outflows is still missing. Here we report spectroscopic observations that unambiguously reveal star formation occurring in a galactic outflow at a redshift of 0.0448. The inferred star-formation rate in the outflow is larger than 15 solar masses per year. Star formation may also be occurring in other galactic outflows, but may have been missed by previous observations owing to the lack of adequate diagnostics(14,15). |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000398897900031 |
WOS关键词 | INTEGRAL FIELD SPECTROSCOPY ; MASSIVE MOLECULAR OUTFLOWS ; COMPACT DWARF GALAXIES ; INFRARED GALAXIES ; POSITIVE FEEDBACK ; SEYFERT-GALAXIES ; FORMING GALAXIES ; QUASAR FEEDBACK ; HOST GALAXIES ; AGN FEEDBACK |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/15298 |
专题 | 气候变化 |
作者单位 | 1.Univ Cambridge, Cavendish Lab, 19 JJ Thomson Ave, Cambridge CB3 0HE, England; 2.Univ Cambridge, Kavli Inst Cosmol, Madingley Rd, Cambridge CB3 0HA, England; 3.Inst Astron, Madingley Rd, Cambridge CB3 0HA, England; 4.CSIC, Dept Astrofis, Ctr Astrobiol CSIC INTA, Madrid, Spain; 5.INAF, Osserv Astrofis Arcetri, Largo E Fermi 5, I-20125 Florence, Italy; 6.Univ Zurich, Inst Phys, Winterthurerstr 190, CH-8057 Zurich, Switzerland; 7.Univ Studi Firenze, Dipartimento Fis & Astron, Via G Sansone 1, I-50019 Florence, Italy; 8.Max Planck Inst Extraterr Phys, Giessenbachstr, D-85748 Garching, Germany |
推荐引用方式 GB/T 7714 | Maiolino, R.,Russell, H. R.,Fabian, A. C.,et al. Star formation inside a galactic outflow[J]. NATURE,2017,544(7649):202-+. |
APA | Maiolino, R..,Russell, H. R..,Fabian, A. C..,Carniani, S..,Gallagher, R..,...&Sturm, E..(2017).Star formation inside a galactic outflow.NATURE,544(7649),202-+. |
MLA | Maiolino, R.,et al."Star formation inside a galactic outflow".NATURE 544.7649(2017):202-+. |
条目包含的文件 | 条目无相关文件。 |
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