Millimeter observations of the HH 222 region

Details Millimeter observations of the HH 222 region Millimeter observations of the HH 222 region

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...427..895c&link_type=abstract

Astronomy and Astrophysics, v.427, p.895-899 (2004)

Astronomy and Astrophysics

Astrophysics

2

Ism: Jets And Outflows, Ism: Herbig-Haro Objects, Ism: Molecules, Stars: Formation, Stars: Pre-Main Sequence, Radio Lines: Ism

Scientific paper

The HH 222 streamers in Orion and their associated non-thermal radio jet form a unique object, whose nature remains enigmatic. We have carried out a set of detailed millimeter observations around the non-thermal radio source in several transitions of the CO, 13CO, C18O and CS molecules. We find that the radio source is not associated with any molecular outflow nor located within a dense molecular core, and is therefore very unlikely to be a newborn star. The observations are in principle consistent with the radio source being a more evolved T Tauri star undergoing an energetic event, but it could also be an evolved object (an X-ray binary or a microquasar) accidentally passing through the large Orion cloud complex.
Based on observations collected at IRAM, Spain.

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