Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.231..833s&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 231, April 1, 1988, p. 833-871.
Astronomy and Astrophysics
Astronomy
53
H I Regions, Local Group (Astronomy), Peculiar Stars, Radio Observation, Red Shift, Spiral Galaxies, Astronomical Catalogs, Hubble Constant, Star Formation Rate, Starburst Galaxies, Stellar Luminosity
Scientific paper
H I observations of a sample of 163 Sc galaxies made with the Mk IA and Mk II radio telescopes at Jodrell Bank are presented. These observations complete the northern part of a survey of intermediate-type spirals for the purpose of establishing the peculiar velocity of the Local Group. Optical, infrared, far-infrared and radio observations are used to demonstrate that the global properties of Sc galaxies are adequately described in terms of three uncorrelated parameters which can be related to linear diameter, quiescent star-formation rate and embedded starburst-type activity. This three-parameter sequence is effectively an orthogonal three-dimensional classification system which is able to account for the global properties of Sc galaxies with an accuracy close to the limit of measurement error. It is suggested that the scheme may extend to other types of spiral galaxy.
Davies Rhodri D.
Staveley--Smith Lister
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