The Highly Collimated HH 92 Jet and Parsec-Scale Outflow from IRAS 05399-0121

Details The Highly Collimated HH 92 Jet and Parsec-Scale Outflow from IRAS 05399-0121 The Highly Collimated HH 92 Jet and Parsec-Scale Outflow from IRAS 05399-0121

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002apj...574l..79b&link_type=abstract

The Astrophysical Journal, Volume 574, Issue 1, pp. L79-L82.

Astronomy and Astrophysics

Astronomy

10

Ism: Clouds, Ism: Herbig-Haro Objects, Ism: Jets And Outflows, Stars: Formation, Stars: Pre-Main-Sequence

Scientific paper

We report the discovery of a 4 pc long bipolar Herbig-Haro outflow driven by a 10 Lsolar class I source, IRAS 05399-0121, which is deeply embedded within a submillimeter dust condensation in the LBS 30 cloud core in the Orion B molecular cloud north of NGC 2024. A highly collimated low-excitation jet, HH 92, emerges from an asymmetric infrared reflection nebula and breaks into a cluster of well-resolved Hα-bright bow shocks about 2.5′ northwest of the source. We propose that the well-known objects HH 90 and 91, and some previously uncataloged shocks that lie along the axis of the HH 92 jet, trace a single giant outflow lobe ~3 pc in length. The object HH 93, which lies about 10' southeast of HH 92, traces the counterflow.

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