SIMBAD references

We give an extensive primer on roAp stars - introducing them, putting them in context and explaining terminology and jargon, and giving a thorough discussion of what is known and not known about them. This provides a good understanding of the kind of science WET could extract from these stars. We also discuss the many potential pitfalls and problems in high-precision photometry. Finally, we suggest a WET campaign for the roAp star HR 1217.