Aperture synthesis observations of recombination lines from compact H II regions. II - The radio sources near K 3-50
Abstract
Observations of the H 109 (alpha) line with the Westerbork Synthesis Radio Telescope showed compact H II regions near K 3-50. The H2CO absorption detectors were directed towards the brightest components A and C using the Effelsberg 100 m telescope; the more compact line sources of the H II (alpha) have lower line to continuum ratios due to pressure broadening, with very strong H2CO absorption towards C. The most compact H II regions A and C velocities differ from the neutral material by -7 and +7 km/s, indicating that both sources are examples of the 'blister model'.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- February 1981
- Bibcode:
- 1981A&A....94..259V
- Keywords:
-
- Astronomical Spectroscopy;
- H Alpha Line;
- H Ii Regions;
- Radio Sources (Astronomy);
- Synthetic Apertures;
- Absorption Spectra;
- Astronomical Maps;
- Flow Velocity;
- Formaldehyde;
- Hydrogen Recombinations;
- Astronomy