The Radio Emission from Normal Galaxies: II. A Study of 20 Spirals at 158 Mc/s
Open Access
- 1 June 1961
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 122 (6) , 479-490
- https://doi.org/10.1093/mnras/122.6.479
Abstract
A survey has been made of the radio emission at 158 Mc/s from twenty bright spiral galaxies. A radio index R has been defined by the equation R = m r – m pg , where m r and m pg are the radio and photographic magnitude respectively. The results indicate that R is a function of the inclination and galactic latitude of a galaxy and it is suggested that this effect is due to the absorption of light. The mean value of R for spirals of type Sb and Sc is +1.3 with an r.m.s. dispersion ±0.7. No significant difference was found between the mean values of R for the two types of galaxy.Keywords
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