A complete, high-sensitivity 21-cm hydrogen line survey of M31

Details A complete, high-sensitivity 21-cm hydrogen line survey of M31 A complete, high-sensitivity 21-cm hydrogen line survey of M31

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26as...40..215c&link_type=abstract

Astronomy and Astrophysics Supplement Series, vol. 40, May 1980, p. 215-248.

Astronomy and Astrophysics

Astronomy

61

Andromeda Galaxy, H Lines, Microwave Spectra, Radio Astronomy, Astronomical Maps, Astronomical Photography, Data Reduction, Galactic Rotation, Hydrogen Atoms, Radial Velocity, Radio Antennas, Radio Telescopes, Velocity Distribution

Scientific paper

Results of a complete, high-sensitivity, filled aperture, 21-cm hydrogen line survey of M31 are presented. These observations were made with the 100-meter Bonn radio telescope whose beamwidth at this wavelength is 8.8 min. The data are displayed as velocity profiles, contour maps, and photographs of the distribution of line intensity. A brief discussion is given of a few of the unusual features in the measured H I distribution and velocity field of M31. An extended (greater than 30 deg) high-velocity feature in the northern region of M31 is noted.

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