DQ Cephei amplitude variations (Li+ 1999)

Details DQ Cephei amplitude variations (Li+ 1999) DQ Cephei amplitude variations (Li+ 1999)

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ycat..41360515l&link_type=abstract

VizieR On-line Data Catalog: J/A+AS/136/515. Originally published in: 1999A&AS..136..515L

Computer Science

Stars: Variable, Magnitudes

Scientific paper

A period analysis of the data obtained in six nights of differential photoelectric photometry of the δ Scuti star DQ Cephei (about 42 hours) confirms the pulsation modes of f1=8.0480 cycle per day and f2=12.6826 cycle per day. The result adjusts well to the observations that cover a time span of 46 years. Comparing with the results obtained for different years, we discovered obvious amplitude variations of the two modes. These amplitude variations show phase differences of almost 180 degrees. The variation period probably is longer than 46 years. (1 data file).

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