On the Nature of Ryle and Bailey's Candidate Star for the Pulsating Radio Source CP 1919
The energy distribution and spectrum of the "blue" star near CP 1919 indicate that it is a normal early F, main-sequence star and therefore is not likely to be related to the radio source. No regular variations were found in the light from the star, to within an accuracy of a few tenths of 1 per cent.
Additional Information© 1969 American Astronomical Society. Provided by the NASA Astrophysics Data System. Received December 16, 1968. We are indebted to W. L. W. Sargent for a discussion of the spectroscopic data and to M. Ryle for furnishing a revised Cambridge position. This research was supported in part by NASA grant NGL 05-002-007 and ARPA grant DA-ARO-D-31-124-G 705.
Published - 1969ApJ___155L_109W.pdf