Molecular hydrogen mapping of Herbig-Haro 7-11. II - A filamentary bullet?

Details Molecular hydrogen mapping of Herbig-Haro 7-11. II - A filamentary bullet? Molecular hydrogen mapping of Herbig-Haro 7-11. II - A filamentary bullet?

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.221..993l&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 221, Aug. 15, 1986, p. 993-1000.

Astronomy and Astrophysics

Astronomy

42

Astronomical Maps, Herbig-Haro Objects, Hydrogen, Molecular Clouds, Stellar Envelopes, Stellar Mass Ejection, Emission Spectra, Filaments, H Lines, Molecular Gases, Shock Wave Propagation

Scientific paper

A map is presented of the Q-branch H2 line emission associated with Herbig-Haro 7-11. The molecules are shock-excited and the emitting area stretches 4 arcmin north-west from HH 7-11 in a fairly sharp and straight line. The evidence suggests that the emission occurs where a spine of dense molecular gas is being struck by a jet from the young star SVS 13. The origin of the Herbig-Haro objects is discussed. The authors suggest that HH 7-11 are the bow-shocks formed around a helical filament of dense gas moving at 200 km s-1 through the molecular cloud. The filament could be produced by a well-collimated precessing jet from SVS 13. HH 2, HH 12 and HH 101 may be explained in a similar way.

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