VLA detection of the exciting sources of HH 34, HH 114, and HH 199.

Details VLA detection of the exciting sources of HH 34, HH 114, and HH 199. VLA detection of the exciting sources of HH 34, HH 114, and HH 199.

Apr 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996rmxaa..32...27r&link_type=abstract

Revista Mexicana de Astronomia y Astrofisica, 32, 27-33 (1996)

Astronomy and Astrophysics

Astronomy

32

Ism: Jets And Outflows, Radio Continuum Stars. Stars: Formation, Stars: Mass Loss

Scientific paper

We present sensitive VLA observations at 3.6-cm of four Herbig-Haro fields: HH 34, HH 114, HH 199, and HH 212. In all fields but the last we detect radio sources that are probably associated with the exciting source of the region. We present sensitive VLA observations at 3.6-cm of four Herbig-Haro fields: HH 34, HH 114, HH 199, and HH 212. In all fields but the last we detect radio sources that are probably associated with the exciting source of the region. In the case of HH 34, our detection of a radio counterpart supports the notion that newborn stars which are actively producing HH flows generally emit in the cm radio continuum at levels that are detectable with a moderately long (a few hours) integration made with the VLA. In the HH 114 field, we detect independent sources associated with both an IRAS source and a millimeter object in the region. Our present observations cannot favor either of the sources as the dominant exciting object in the region. Finally, in HH 199 we detect a source that could be a thermal jet or an unresolved radio binary and that is associated with the IRAS source in the field. In the case of HH 34, our detection of a radio counterpart supports the notion that newborn stars which are actively producing HH flows generally emit in the cm radio continuum at levels that are detectable with a moderately long (a few hours) integration made with the VLA. In the HH 114 field, we detect independent sources associated with both an IRAS source and a millimeter object in the region. Our present observations cannot favor either of the sources as the dominant exciting object in the region. Finally, in HH 199 we detect a source that could be a thermal jet or an unresolved radio binary and that is associated with the IRAS source in the field.

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