The dynamics of Herbig-Haro objects

Details The dynamics of Herbig-Haro objects The dynamics of Herbig-Haro objects

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986cajph..64..414s&link_type=abstract

(Conference on Jets from Stars and Galaxies, Toronto, Canada, June 24-27, 1985) Canadian Journal of Physics (ISSN 0008-4204), vo

Physics

6

Herbig-Haro Objects, Radial Velocity, Stellar Mass Ejection, Stellar Motions, Supersonic Flow, Early Stars, Electron Density (Concentration), H Alpha Line, Oxygen, Shock Waves, Velocity Distribution, Visible Spectrum

Scientific paper

Radial-velocity and proper-motion information on Herbig-Haro (HH) objects is analyzed for clues to the character of the supersonic flows that produce the objects. The author examines the correlations among space velocities, excitation states, internal velocity dispersions, electron densities, and positions relative to the exciting stars for the emission knots of HH 1 and HH 2. Whereas the interstellar-bullet model may account for most of the phenomena in the HH 1-HH 2 system, HH 43 is found to show characteristics of a stellar wind shock against an obstacle cloudlet. By contrast, the HH 46-HH 47 system exhibits a continuous, well-collimated jet of emission with knots that may be due to instabilities in the confined, supersonic flow.

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