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A high resolution radio continuum survey of Messier 31. I : Observations at 610 MHz, data reduction, and the 36W catalogue of radio sources
(1984-05-01)
High resolution observations of M31 at 610 MHz (49.2 cm), made with the Westerbork Synthesis Radio Telescope, are described. The observations and reduction of three full synthesis fields which, after combination, cover M31 ...
A high resolution hydrogen line survey of Messier 31. I : Observations and data reduction
(1984-02-01)
New observations with the Westerbork Synthesis Radio Telescope are presented of M31 in the 21 cm line of neutral atomic hydrogen. The observations and calibration are described, and the various stages of data reduction are ...
NGC 206, a hole in M31
(1981-02-01)
New high resolution 21 cm line observations of M31 show that the interstellar medium of this galaxy contains numerous holes in the H I distribution, some of which are clearly correlated with OB-associations. These holes ...