Radio jet in the H II region Orion B

Details Radio jet in the H II region Orion B Radio jet in the H II region Orion B

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.254..719s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 254, Feb. 15, 1992, p. 719-722.

Astronomy and Astrophysics

Astronomy

9

H Ii Regions, Interstellar Chemistry, Molecular Clouds, Radio Jets (Astronomy), Brightness Temperature, Carbon, Continuous Spectra, Electron Energy, Forbidden Transitions, Gas Ionization, Heavy Elements

Scientific paper

An arcmin-resolution image is presented of the nearby H II region Orion B (NGC 2024, W12) made in the radio continuum at a frequency of 330 MHz. The image displays a spectacular jetlike feature extending northwards and up to 10 arcmin from the core of the nebula. The radio jet is parallel to a molecular bipolar flow seen in the associated molecular cloud. Continuum radio emission is also detected to the south of the H II region and positionally coincident with the southern molecular jet. Despite the large optical depth, the imaging shows surface-brightness variations in the main body of the H II region. The brightness temperature toward the peak of the continuum emission directly measures the electron temperature of the ionized gas to be 8400 +/- 1000 K.

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