New, high-resolution, near-infrared observations of HH1

Details New, high-resolution, near-infrared observations of HH1 New, high-resolution, near-infrared observations of HH1

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000mnras.318..747d&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 318, Issue 3, pp. 747-752.

Astronomy and Astrophysics

Astronomy

18

Circumstellar Matter, Ism: Individual: Hh1, Ism: Jets And Outflows, Ism: Kinematics And Dynamics, Infrared: Ism: Lines And Bands, Infrared: Stars

Scientific paper

We present new, high-resolution, near-infrared images of the HH1 jet and bow shock. H2 and [Feii] images are combined to trace excitation changes along the jet and across the many shock features in this flow. Echelle spectra of H2 profiles towards a few locations in HH1 are also discussed. Gas excitation in oblique, planar C-type shocks best explains the observations, although J-type shocks must be responsible for the observed [Feii] emission features. Clearly, no single shock model can account for all of the observations. This will probably be true of most, if not all, Herbig-Haro flows.

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