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The Star Formation Structure and H2O Supermaser Radiation in Orion KL |
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| Authors: | LI Matveyenko K Zakharin PJ Diamond DA Graham |
| Institution: | 1. Space Research Institute, Profsojuznaja 84/32, 117810, Moscow, Russia; E-mail 2. Nuffiled Radio Observatory, Macclesfield, Cheshire, SK11, 9DL, UK 3. Max-Planck-Institute Radioastronomie, Auf dem Hugel 69, 53121, Bonn, USA |
| Abstract: | 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. |
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