Radio Continuum and Radio Recombination Line Observations of Sagittarius B1 and G0.6-0.0
Radio Continuum and Radio Recombination Line Observations of Sagittarius B1 and G0.6-0.0
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人马座 B1 和 G0.6-0.0 的射电连续谱和射电重组线观测
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
W. Goss
中科院分区：
文献类型：
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作者：
D. Mehringer;F. Yusef;P. Palmer;W. Goss
用VLA观测了Sgr B1和G0.6-0.0的连续发射和h110 - α复合线发射。结果表明，Sgr B1在空间和运动学上都是一个非常复杂的区域。连续体观测表明，该地区主要是由许多扩展特征而不是紧凑源所主导。另一方面，Sgr B2由几个超紧凑的H II区主导。这两个区域可能处于不同的进化阶段，Sgr B1更古老，可能相差0到6年。重组线研究表明，Sgr B1由两个截然不同的运动区组成，即简单的西部运动区和较为复杂的东部运动区。G0.6-0.0是一个位于Sgr B1和Sgr B2之间，由至少四个超紧的H II区组成的区域。在这些致密区域的东部和南部有一个电离气体弧。G0.6-0.0的速度介于Sgr B1和Sgr B2之间。这些事实加强了这些区域之间存在物理联系的论点。
Continuum emission and H110-alpha recombination line emission from Sgr B1 and G0.6-0.0 have been observed using the VLA. It is shown that Sgr B1 is a region of great complexity, both spatially and kinematically. The continuum observations show that this region is dominated by many extended features rather than compact sources. On the other hand, Sgr B2 is dominated by several ultracompact H II regions. The two regions may be in different stages of evolution, with Sgr B1 being older, perhaps by as much as 0 exp 6 yrs. The recombination line study shows that Sgr B1 is composed of two distinct kinematic regions, a simple western one and a more complex eastern one. G0.6-0.0 is a region composed of at least four ultracompact H II regions that is situated between Sgr B1 and Sgr B2. There is an arc of ionized gas that lies to the east and to the south of these compact regions. The velocity of G0.6-0.0 is intermediate between those of Sgr B1 and Sgr B2. These facts strengthen the argument that these regions are physically associated.