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M.D. Reed, S.D. Kawaler, S.J. Kleinman (Iowa State University)
Subdwarf B stars were the most common objects detected in both the PG and KPD surveys. They have been detected in open and globular clusters as well as in the field population. It is believed they will evolve directly from the horizontal branch to the white dwarf cooling track, though the creation mechanism remains a mystery.
Fortunately, pulsating sdB stars were discovered by Kilkenny \emph{et al.} (1997), opening them up to seismological probing. Since the original discovery of pulsating sdB stars, additional members have been discovered at a rapid pace. Discovery data plus follow-up observations by us and others is sufficient to begin looking at their class properties.
We will report on preliminary attempts to discern trends within modes amongst class members. Such trends may be of help in identifying the spherical harmonics of modes, or may show effects due to variations of mass, temperature, radius, or evolutionary sequences.
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