The radio continuum morphology of the Orion Nebula - From 10 arcmin to 0.1 arcsec Resolution

Details The radio continuum morphology of the Orion Nebula - From 10 arcmin to 0.1 arcsec Resolution The radio continuum morphology of the Orion Nebula - From 10 arcmin to 0.1 arcsec Resolution

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26as...98..137f&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 98, no. 1, p. 137-164.

Astronomy and Astrophysics

Astronomy

87

Astronomical Maps, Continuous Spectra, Interstellar Gas, Line Spectra, Orion Nebula, Radio Astronomy, H Alpha Line, Very Large Array (Vla)

Scientific paper

A complete set of newly measured radio continuum maps of the Orion Nebula at 20 and 2 cm is presented. The largest field covers a region of 2 deg x 2 deg with a resolution of 10 arcmin, the smallest covers 3 arcmin x 3 arcmin field, centered on the peak, with a resolution of 0.1 arcsec. The lower resolution maps emphasize the extended emission of the diffuse ionized gas. As the resolution increases, the maps sample regions of higher emission measure. A detailed comparison with H-alpha images shows a very good match on all scale sizes. As the resolution becomes finer than 1 arcsec a completely new aspect of the radio emission appears: a new class of weak, small diameter sources of high surface brightness are found. Many of these features are associated with stars. Finally, a morphological comparison of the radio continuum emission with similar-scale maps of molecular and atomic emission is presented.

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