SIMBAD references

1999AJ....117..456S - Astron. J., 117, 456-461 (1999/January-0)

Kinematics of the HH 43 flow: evidence for a precessing jet?


Abstract (from CDS):

High spectral resolution long-slit spectra of HH 43 obtained in the 1-0 S(1) line of H2 are reported. A direct image of HH 43 obtained in the 1-0 S(1) line of H2 reveals a close correspondence with knots as seen in optical [S II] and Hα emission. We suggest that ambient molecular gas is being entrained and shocked by an atomic flow. The position-velocity diagram along the central axis of HH 43 as seen in H2 reveals a sinusoidal-like structure with a semiamplitude of 8 km.s–1 and a spatial wavelength of about 8000 AU. A direct Hα image of HH 43 shows evidence for a morphological wiggle with a semiamplitude of about 2" that has the same spatial wavelength and phase seen in the 8 km.s–1 kinematic oscillation. These data suggest that HH 43 may be produced by a precessing jet in a close pre-main-sequence binary system. Possible system parameters are explored.

Abstract Copyright:

Journal keyword(s): ISM: Jets and Outflows - ISM: Kinematics and Dynamics

Simbad objects: 13

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:1999AJ....117..456S and select 'bookmark this link' or equivalent in the popup menu


© Université de Strasbourg/CNRS

    • Contact