Photoelectric UBV Photometry of Northern Cepheids, III

Details Photoelectric UBV Photometry of Northern Cepheids, III Photoelectric UBV Photometry of Northern Cepheids, III

Jan 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981cokon..77....1s&link_type=abstract

Communications of the Konkoly Observatory, No. 77 (Vol. VIII, 3), p. 1-97 (1981)

Physics

42

Scientific paper

New UBV photoelectric observational data on 25 northern Cepheids with periods longer than 10 days are presented. The period changes and the variations in the light curve of the observed Cepheids are investigated. Almost half of the programme stars show continuous period change (parabolic O-C curve). Among the Cepheids in binary systems YZ Aur, SV Per and perhaps AN Aur show a period jump and a subsequent rejump to the earlier value of the period. The apparent period changes due to orbital motion around the common centre of gravity can be seen in RW Cam, X Cyg, SZ Cyg and T Mon. The orbital period of RW Cam is about 6600 Days. The only new case of secular light curve variation is observed in AN Aur.

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