Multi-period pulsation and amplitude variation behavior in delta Scuti variable DQ Cephei

Details Multi-period pulsation and amplitude variation behavior in delta Scuti variable DQ Cephei Multi-period pulsation and amplitude variation behavior in delta Scuti variable DQ Cephei

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26as..136..515l&link_type=abstract

Astronomy and Astrophysics Supplement, v.136, p.515-517

Astronomy and Astrophysics

Astrophysics

3

Stars: Delta Sct, Oscillations, Individual: Dq Cephei

Scientific paper

A period analysis of the data obtained in six nights of differential photoelectric photometry of the delta 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. Table 4 is only available in electronic form at the CDS Via anonymous http://cdsweb.u-strasbg.fr/Abstract.html

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