Radio Continuum Structure of the Orion Nebula

Details Radio Continuum Structure of the Orion Nebula Radio Continuum Structure of the Orion Nebula

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aj....121..399s&link_type=abstract

The Astronomical Journal, Volume 121, Issue 1, pp. 399-407.

Astronomy and Astrophysics

Astronomy

13

Ism: H Ii Regions, Ism: Individual (Ngc 1976, Ngc 1977), Radio Continuum, Ism: Reflection Nebulae

Scientific paper

We have imaged the large-scale radio continuum structure in the Orion region with the Very Large Array at 330 MHz. Arcminute-resolution morphology of the extended emission in the H II regions M42 and M43 (NGC 1976 and NGC 1982) and in the NGC 1973-75-77 nebulosity to the north are presented. A low surface brightness thermal radio halo is detected in the H II region M42: comparison with an optical photograph indicates that the radio emission distinguishes optical emission structures from reflection nebulosities. In NGC 1977 we have discovered a compact, steep-spectrum radio source coincident with a bright optical rim.

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