Pulsation of the delta Scuti star theta(2) Tau: new multisite photometry and modelling of instability
Breger, M × Pamyatnykh, AA Zima, Wolfgang Garrido, R Handler, G Reegen, P #
Priestley and Weale
Monthly Notices of the Royal Astronomical Society vol:336 issue:1 pages:249-258
The results of a multisite photometric campaign of theta(2) Tau are reported. This binary system consists of an evolved and a main-sequence A star, both situated inside the instability strip. The 12th Delta Scuti Network campaign included 152 h of high-precision photometry obtained at four observatories. This leads to the derivation of 11 frequencies of pulsation in the 10.8 to 14.6 cycle d(-1) range. These frequencies confirm the results from previous Earth-based (1982-1986) as well as satellite (2000) photometry, although amplitude variability on a time-scale of several years is present.