HCO(+) observations of the Herbig-Haro objects 1 and 2

Details HCO(+) observations of the Herbig-Haro objects 1 and 2 HCO(+) observations of the Herbig-Haro objects 1 and 2

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.244..173d&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 244, May 1, 1990, p. 173-180.

Astronomy and Astrophysics

Astronomy

43

Formyl Ions, Herbig-Haro Objects, Very Large Array (Vla), Astronomical Models, Bremsstrahlung, Hydrogen, Radial Velocity, Spectral Line Width

Scientific paper

Recent observations, made in the J = 3 - 2(267.557 GHz) rotational line of HCO(+) of the HH1-2 bipolar outflow region, have detected the presence of a dense, stationary, ambient clump of HCO(+) associated with the Herbig-Haro object HH2. HCO(+) was also detected around HH1 and the probable central exciting object, VLA1. The downwind offset of the clump of HCO(+) in HH2 from the peak optical, bremsstrahlung and molecular hydrogen v = 1 - 0 S(1) emission, together with the low HCO(+) radial velocity measured and narrow FWHM line widths, imply that HH2 represents a 'shocked cloudlet'.

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