The exciting source of the Herbig-Haro 111 jet complex: VLA detection of a one-sided radio jet

Details The exciting source of the Herbig-Haro 111 jet complex: VLA detection of a one-sided radio jet The exciting source of the Herbig-Haro 111 jet complex: VLA detection of a one-sided radio jet

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...281..882r&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 281, no. 3, p. 882-888

Astronomy and Astrophysics

Astronomy

54

Herbig-Haro Objects, Pre-Main Sequence Stars, Radio Astronomy, Radio Jets (Astronomy), Star Formation, Infrared Stars, Stellar Mass Ejection, Very Large Array (Vla)

Scientific paper

Using the Very Large Array (VLA) in the D configuration we observed 28 fields containing Herbig-Haro (HH) objects, at 3.6 and 2-cm. We detected 23 sources at 3.6-cm, most of which are background objects. In the regions of HH 111 and HH 24/26 we detected sources with positive spectral indices. The radio source detected in the HH 111 region is associated with the powering star of this collimated Herbig-Haro flow. High-angular resolution (approximately 0.2 sec) VLA observations of this source made in the A configuration at 3.6-cm reveal that it is a one-sided radio jet very well aligned with the optical jet. The radio source in the HH 24/26 field coincides spatially with an infrared star in the region, SSV 61, which is not related to the HH objects. A few other sources, which lie close to HH objects, are briefly discussed. Combining the results of the present and previous surveys of HH sources suggests that about one third of these objects are detected in the radio continuum, with a strong tendency for the sources of the more spectacular HH flows to be detected.

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