Five new δ Scuti stars

We present high-resolution spectroscopy and precision photometry of five new, relatively bright delta Scuti stars. They were originally chosen as photometric comparison stars in our program of automated, high-precision photometry of solar-type stars and subsequently recognized as new variable stars. We conducted follow-up spectroscopic and photometric observations to determine the properties of the stars and their types of variability. All five of the stars presented here belong to the most common subgroup of low-amplitude, Population I delta Scuti variables. One of the stars, HD 10502, is the third example of a delta Scuti variable with composite broad and narrow spectroscopic line profiles suggesting the presence of a circumstellar shell or disk.