Optical emission from shocks. IV - The Herbig-Haro objects

Details Optical emission from shocks. IV - The Herbig-Haro objects Optical emission from shocks. IV - The Herbig-Haro objects

May 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apjs...37..117d&link_type=abstract

Astrophysical Journal Supplement Series, vol. 37, May 1978, p. 117-144.

Astronomy and Astrophysics

Astrophysics

204

Emission Spectra, Herbig-Haro Objects, Optical Emission Spectroscopy, Protostars, Shock Waves, Stellar Evolution, Stellar Spectrophotometry, Interstellar Gas, Line Spectra, Radial Velocity, Stellar Luminosity, Stellar Mass Ejection, T Tauri Stars

Scientific paper

Extensive absolute spectrophotometry of HH objects has been obtained with the 3.9 m AAT and the 1.9 m Mount Stromlo telescopes. Systematic trends in their spectral characteristics have been found. All the observations can be explained in a quantitative manner using a theory of radiating shock waves traveling into a partially preionized medium. There are probably two classes of stellar objects driving the shocks. These are either B-type protostars in the process of breaking up optically thick dust cocoons, or FU Orionis-type stars losing mass. In either case, high luminosities and/or high mass-loss rates are required. If the stellar object is an FU Orionis object, these must be maintained over time scales of order 100 years.

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