Westerbork observations of 6-cm H2CO in W3

Details Westerbork observations of 6-cm H2CO in W3 Westerbork observations of 6-cm H2CO in W3

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.201..317a&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 201, Oct. 1982, p. 317-330. Research supported by the Rijksuniversiteit

Astronomy and Astrophysics

Astronomy

19

Absorption Spectra, Astronomical Maps, Formaldehyde, Molecular Clouds, Opacity, Angular Resolution, Data Reduction, Ionized Gases, Recombination Reactions, Silicates

Scientific paper

The distribution of the 4.8-GHz formaldehyde absorption against the continuum sources in the W3 core has been mapped with an angular resolution of 8.2 x 9.3 arcsec and a velocity resolution of 1.22 km/s. Opacity variations on a linear scale size of 0.2 pc are seen against the continuum source W3A. The opacity enhancements are interpreted as being caused by clumping in the molecular material overlying the continuum source. There is a strong correlation between the optical depth of H2CO and that of the silicate absorption at 9.7 microns. Evidence for an interaction between the ionized gas and the surrounding molecular cloud has been found.

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