Published October 1982 | Version v1
Journal article Metadata-only

Westerbork observations of 6-cm H2CO in W3

Creators

  • 1. Rijksuniversiteit Groningen (Netherlands). Kapteyn Sterrewacht
  • 2. Illinois Univ., Urbana (USA). Dept. of Astronomy
  • 3. Dwineloo Observatory (Netherlands)

Description

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 arcsec2 and a velocity resolution of 1.22 km s-1. 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 μm. Evidence for an interaction between the ionized gas and the surrounding molecular cloud has been found. (author)

Additional details

Publishing Information

Journal Title
Mon. Not. R. Astron. Soc.
Journal Volume
201
Journal Issue
1
Series
Mon. Not. R. Astron. Soc.
Journal Page Range
317-330
ISSN
0035-8711

INIS

Country of Publication
United Kingdom
Country of Input or Organization
United Kingdom
INIS RN
14777786
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
COSMIC GASES; EXPERIMENTAL DATA; FORMALDEHYDE; GHZ RANGE 01-100; H2 REGIONS; OPACITY; OPTICAL DEPTH CURVE; RADIO TELESCOPES; RADIOWAVE RADIATION
Descriptors DEC
ALDEHYDES; COSMIC RADIO SOURCES; DATA; DIAGRAMS; ELECTROMAGNETIC RADIATION; ELECTRONIC EQUIPMENT; EQUIPMENT; FLUIDS; FREQUENCY RANGE; GASES; GHZ RANGE; INFORMATION; NUMERICAL DATA; OPTICAL PROPERTIES; ORGANIC COMPOUNDS; PHYSICAL PROPERTIES; RADIATIONS; RADIO EQUIPMENT; TELESCOPES