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Notes from Observatories
1969
Publications of the Astronomical Society of the Pacific
Preserved Fulltext
UBV observations of P Cygni are presented. No short-period variability is discernible, and there appear to have been no secular changes in brightness exceeding a few thousandths of a magnitude over the last six years.
doi:10.1086/128755
fatcat:ubdn74qbxvgohgl2gooeujcqxa