A neutral hydrogen survey of NGC 2685

Details A neutral hydrogen survey of NGC 2685 A neutral hydrogen survey of NGC 2685

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....82..314s&link_type=abstract

Astronomy and Astrophysics, vol. 82, no. 3, Feb. 1980, p. 314-321.

Astronomy and Astrophysics

Astrophysics

74

Astronomical Models, Cosmic Gases, Galaxies, Hydrogen Clouds, Line Spectra, Neutral Gases, Background Radiation, Brightness Temperature, Galactic Rotation, Galactic Structure, Intergalactic Media, Milky Way Galaxy

Scientific paper

The paper reports on a survey of NGC 2685 in the 21-cm line of neutral hydrogen in the velocity range of +730 to +1030 km/s using the Westerbork radio synthesis telescope. The results are discussed in terms of accretion of intergalactic gas. It is suggested that the outer ring may be quite old or possibly a remnant of the formation period of the galaxy. Finally, it is proposed that the helix-like structure may be the result of a much more recent accretion event.

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