Jets from young stars. III - The case of Haro 6-5B, HH 33/40, HH 19, and 1548C27

Astronomy and Astrophysics – Astrophysics

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Early Stars, Herbig-Haro Objects, Jet Flow, Stellar Mass Ejection, Stellar Winds, T Tauri Stars, Emission Spectra, H Alpha Line, Line Spectra, Nebulae, Photographic Plates

Scientific paper

The authors report the discovery of 3 jetlike emission-line nebulosities associated with Haro 6-5B, HH33/40, and HH19 and confirm the 1548C27-jet. These jets are 0.05 - 0.2 pc long and have opening angles of about 5°. CCD images and spectroscopic observations of these new and of previously discovered jets strongly suggest that they are all representations of well-collimated, high-velocity (50 - 400 km s-1) flows emanating from young stars. The possibility of powering many HH objects by such jets is discussed.

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