SIMBAD references

A review of the asteroseismology of the rapidly oscillating Ap (roAp) stars based on the simultaneous or multicolor photometry is presented. So far, multicolor photometric studies of roAp stars are based on single frequencies. In this paper we propose simultaneous multicolor photometric study on multi-mode roAp stars such as HR 1217. HR 1217 has six modes, three of which are of comparable and large enough amplitudes to be detectable in several wavelengths. With a WET campaign on a star like HR 1217, we could resolve the individual modes, and monitor each in different colors for amplitude and phase information. This study is also well suited for mode-identification.