Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....56..407h&link_type=abstract
Astronomy and Astrophysics, vol. 56, no. 3, Apr. 1977, p. 407-411.
Astronomy and Astrophysics
Astronomy
22
H Ii Regions, Hydroxyl Emission, Infrared Radiation, Interstellar Masers, Radio Sources (Astronomy), Hydrogen Ions, Image Tubes, Infrared Astronomy, Infrared Photography, Radiant Flux Density, Spectral Energy Distribution
Scientific paper
Results of broadband photometry in the wavelength range from 5 to 22 microns and of near-infrared photography with an image tube of four fields containing six class I OH maser sources are presented. Several of the compact H II regions located in the vicinity of the OH masers are found to be associated with strong sources of far-infrared radiation. The maser source OH 45.07 + 0.13 is the only case in the sample where an OH and H2O maser associated with radio continuum emission coincides with a luminous infrared source. No infrared radiation could be detected at the positions of the maser sources OH 45.10+0.12, OH 45.47+0.13, OH 45.47+0.05, ON-1 and ON-2. Upper limits for the 10.7-micron flux densities are given in these cases.
Hefele H.
Wacker Wolfgang
Weinberger Ram
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