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C. A. GrandPre, D. E. Backman (Franklin and Marshall College), L. A. Marschall (Gettysburg College), J. R. Stauffer (SIRTF Science Center)
We present analyses of long-term photometric variation of four rapidly rotating stars of spectral type K in the Pleiades and alpha Persei clusters. These young stars (approx. ZAMS) are known to have rotational light curves with amplitudes of a few per-cent due to large "starspots" and photospheric active regions. The data show multi-year trends possibly representing analogs to the solar sunspot cycle. Our observations were made at the National Undergraduate Research Observatory (NURO) which is operated by Lowell Observatory. We thank the NASA Space Grant Colleges program for support.
The author(s) of this abstract have provided an email address for comments about the abstract: backman@ssa1.arc.nasa.gov