NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-03-19 T12:30:32 PDT
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For refcode 1992A&AS...93..255G:
Retrieve 342 NED objects in this reference.
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NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
1992A&AS...93..255G Axial ratios of edge-on spirals B.N.G. Guthrie Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, Scotland Received March 21; accepted August 21,1991 Abstract. - A diameter-limited sample of 888 normal Sa-Sc galaxies was compiled from the Uppsala General Catalogue. New micrometer measures of the axial ratios A of the disc components of 262 edge-on spirals in this sample were made on copies of blue Palomar Sky Survey plates and calibrated against photometric standards. The distribution of isophotal axial ratios for the whole sample was analysed to give information on the true axial ratios R_0_ of spiral discs. The mean value of log R_0_ is 0.95 +/- 0.03 and the dispersion about this mean is 0.12 +/- 0.04. A similar mean value (0.90) was obtained from a volume-limited subsample of 348 spirals. The dispersion in log R_0_ is partly due to a dependence of R_0_ on morphological type, and the mean value of log R_0_ for each type was estimated. Inclinations of 342 edge-on (R> ~ 3) spirals were determined from their isophotal axial ratios and types. No significant dependence of R_0_ on luminosity at each type was found. Key words: galaxies: spiral - galaxies: structure of.
Retrieve 342 NED objects in this reference.
Please click here for ADS abstract

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