A Light Curve And Period Analysis Of AE Ursae Majoris, CY Aquarii, And DY Pegasi

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We present a light curve analysis of three high amplitude delta Scuti stars (HADs). Data for this presentation were all secured during spring and fall of 2007. Most of the observations were obtained using the facilities of the Brigham Young University West Mountain Observatory. The variable stars we observed in this investigation include AE Ursae Majoris, CY Aquarii, and DY Pegasi. We present evidence for small period changes as well as an analysis of the light curve components for each of the variables. We compare the results obtained in the present investigation with prior studies of these same targets.
This investigation is part of an initiative to provide a mentored learning environment at the West Mountain Observatory and to promote a variety of undergraduate research experiences. Tools developed in this investigation include the data reduction procedures that enable us to process the several thousand CCD frames that are secured each night as raw observations. We thank the Department of Physics and Astronomy and the College of Physical and Mathematical Sciences at Brigham Young University for the continued support of mentored undergraduate research.

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