Observations and analyses of the eclipsing binary stars NP Andromedae and V1120 Ophiuchi

Analysis was performed on observations of the binary star systems NP Andromedae and V1120 Ophiuchi. The raw CCD images were calibrated and aperture photometry was performed to obtain the light curves for both systems. The period was calculated for NP And using the Period04 program, and the period was calculated for V1120 Oph by using an O -- C period study. The spectral type and temperature were determined by color indices for both star systems. The Wilson-Devinney method was used to obtain geometric and astrophysical parameters for NP And, and a 3-D model was constructed of the NP And star system using Binary Maker. The light curves confirmed that both star systems were in fact W UMa star systems. NP And was determined to be an A-type W UMa system with a cool spot on the primary star. There was not enough data to do a complete photometric analysis of V1120 Oph.