An Examination of the Binary Nature of the delta Scuti Variable AN Lyncis

It has been previously reported that a potential orbital solution fit the the O-C diagram of AN Lyn. It was also stated that the curve was turning over and that AN Lyn was part of a binary system with an orbital period of approximately 22 years. As part of an undergraduate observational astronomy class (BYU Phscs 329) we have monitored AN Lyn for the past two years. We obtained 5 nights of time-series V observations in 2008 and 18 nights of times-series in 2009. In addition, four seasons of observations were obtained as part of a MSU undergraduate observing program. From our data we find that AN Lyn was not turning over at the previously reported point. We will report a new O-C analysis and a detailed Fourier analysis of the 2009 data set.