Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981azh....58.1187v&link_type=abstract
(Astronomicheskii Zhurnal, vol. 58, Nov.-Dec. 1981, p. 1187-1194.) Soviet Astronomy, vol. 25, Nov.-Dec. 1981, p. 675-679. Trans
Astronomy and Astrophysics
Astronomy
Astronomical Spectroscopy, Radio Sources (Astronomy), Supernova Remnants, Absorption Spectra, Emission Spectra, H Ii Regions, Line Spectra, Milky Way Galaxy, Molecular Clouds, Radio Astronomy
Scientific paper
The H I radio line has been observed in absorption and emission near the source W44 with the RATAN-600 radio telescope at 2.2 arcmin x 20 arcmin x 6.3 km/sec resolution. The absorption-line observations show that the nearby H II region NRAO 584 cannot be physically associated with the supernova remnant. The six H I clouds detected in emission and absorption may possibly form part of a patchy envelope around W44; three of them coincide with a molecular cloud in the vicinity. The combined mass of the H I clouds is approximately 220 solar masses, and if the envelope is real it would be expanding at about 10 km/sec. Estimates are obtained for the age of the supernova remnant and the physical parameters of NRAO 584.
Egorova T. M.
Gosachinskij I. V.
Grachev V. G.
Khersonskij V. K.
Ryzhkov N. F.
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