Galaxy formation in an intergalactic medium dominated by explosions
Galaxy formation in an intergalactic medium dominated by explosions
复制标题
以爆炸为主的星系间介质中的星系形成
DOI：
10.1086/183458
复制
发表时间：
1981
期刊：
影响因子：
--
通讯作者：
L. Cowie
中科院分区：
文献类型：
--
作者：
J. Ostriker;L. Cowie
星系在星系际介质中的演化由星星系统的爆炸控制，被认为类似于星际介质中的非线性相互作用过程的星星形成。流体动力学不稳定性的存在条件，星系的形成导致更多的星系形成由于传播的能量释放在死亡的大质量恒星的检查，它表明，这样的爆炸性放大是可能的红移小于约5和恒星系统的质量之间的10至第8和10至第12太阳质量。在红移约为5之前的爆炸主要导致大质量恒星而不是星系的形成，而在红移接近5的爆炸将导致正常星系尺度的物体。该模型还预测了一种尘埃星际介质，阻止了红移大于3的天体的探测，原星系的数量和光度与目前的观测结果相当，二维表面上的未维里化星系群，以及大量质量在1000- 10，000太阳质量范围内的黑洞。
The evolution of galaxies in an intergalactic medium dominated by explosions of star systems is considered analogously to star formation by nonlinearly interacting processes in the interstellar medium. Conditions for the existence of a hydrodynamic instability by which galaxy formation leads to more galaxy formation due to the propagation of the energy released at the death of massive stars are examined, and it is shown that such an explosive amplification is possible at redshifts less than about 5 and stellar system masses between 10 to the 8th and 10 to the 12th solar masses. Explosions before a redshift of about 5 are found to lead primarily to the formation of massive stars rather than galaxies, while those at a redshift close to 5 will result in objects of normal galactic scale. The model also predicts a dusty interstellar medium preventing the detection of objects of redshift greater than 3, numbers and luminosities of protogalaxies comparable to present observations, unvirialized groups of galaxies lying on two-dimensional surfaces, and a significant number of black holes in the mass range 1000-10,000 solar masses.