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2008CoAst.153...63B - Com. in Asteroseismology, 153, 63 (2008/April-0)
The amplitudes of the δ Scuti star 4 CVn in 1991.
BREGER M., DAVIS K.A. and DUKES R.J.
Abstract (from CDS):
The star 4 CVn shows strong amplitude variability from year to year with an approximate range of a factor of two for each mode. 32 nights of photometry from 1991 are used to derive the photometric amplitudes of the ten dominant modes. The amplitude variability of all these modes is confirmed with time scales of years, but not decades. The amplitudes lie within the range for each frequency determined during previous studies of 4 CVn covering 40 years.
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