Photometric and Orbital Study of the Short-Period Eclipsing Binary EM Lac

Ceridwyn Snow Butler University
Faculty Sponsor(s): Xianming Han Butler University
We present three sets of CCD photometric light curves for the eclipsing binary EM Lac. Based on all available minimum light times, we produced an updated ephemeris. The period analysis reveals that the period variation of EM Lac is an upward parabolic curve, which means that the orbital period is increasing. Furthermore, the increased orbital period may be interpreted as mass transfer from the secondary component to the primary component, and the corresponding rate of mass transfer is calculated. Finally, by analyzing the CCD photometric light curves, the photometric solution was obtained with the Wilson-Devinney program.
Competitive Paper--All Disciplines (includes an Oral Presentation)
Competitive Paper (includes an Oral Presentation)

When & Where

09:30 AM
Jordan Hall 276