Taniguchi Y, Shioya Y
Astrophys J. 2000 Mar 20;532(1):L13-L16. doi: 10.1086/312557.
We propose a new model for the extended Lyalpha blobs found recently at high redshift (z approximately 3). The observational properties of these blobs are as follows: (1) the observed Lyalpha luminosities are approximately 1043 h-2 ergs s-1, (2) they appear elongated morphologically, (3) their sizes amount to approximately 100 kpc, (4) the observed line widths amount to approximately 1000 km s-1, and (5) they are not associated with strong radio continuum sources. All these observational properties seem to be explained in terms of galactic winds driven by successive supernova explosions shortly after the initial burst of massive star formation in the galactic centers. The observed number density of Lyalpha blobs ( approximately 3.4x10-5 h3 Mpc-3) may be explained if their present-day counterparts are elliptical galaxies with a luminosity above approximately 1L*.
我们针对最近在高红移（z约为3）处发现的延展莱曼α星云提出了一个新模型。这些星云的观测特性如下：（1）观测到的莱曼α光度约为10^43 h^-2 尔格/秒，（2）它们在形态上呈拉长状，（3）它们的大小约为100千秒差距，（4）观测到的线宽约为1000千米/秒，以及（5）它们与强射电连续谱源无关。所有这些观测特性似乎都可以用星系中心大质量恒星形成初始爆发后紧接着的一系列超新星爆发所驱动的星系风来解释。如果它们目前的对应天体是光度高于约1L*的椭圆星系，那么观测到的莱曼α星云的数密度（约3.4×10^-5 h^3 兆秒差距^-3）或许可以得到解释。
