The Star Formation Structure and H2O Supermaser Radiation in Orion KL

被引：0
|
作者：
L.I. Matveyenko
K. Zakharin
P.J. Diamond
D.A. Graham
机构：
[1] Profsojuznaja 84/32,Space Research Institute
[2] Nuffiled Radio Observatory,undefined
[3] Max-Planck-Institute Radioastronomie,undefined
来源：
Astrophysics and Space Science | 2003年 / 287卷
关键词：
maser; accretion disk; bipolar outflow; star formation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The extra fine structure of the active region of H2O supermaser emission of Orion KL (angular resolution is 0.1 mas) is studied. A central body / accretion disk / bipolar outflow / bullets / envelope is discovered, that corresponds to the earliest stage of the small-mass star formation. The ejector – a compact bright source ≤0.05 AU, Tb ≈ 1017K. The bipolar outflow, vej ≈ 10km/s is a highly-collimated stream with a ration length/diameter∼ 60, rotation period is ∼ 0.5 yr, precession period ∼ 10 yrs, precession angle ∼ 33°. Precession forms a conical helix jet. The envelope amplified radio emission by about three orders of magnitude at velocity at v=7.65 km/s.
引用
收藏
页码：187 / 190
页数：3
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