Dr. Aufdenberg specializes in stellar astrophysics, in particular stellar spectroscopy, stellar interferometry and stellar atmospheres. For the last 30 years he has been developing and using the PHOENIX general stellar atmosphere code to produce models for many of the brightest stars in the night sky: Sirius, Deneb, Mirzam, Adhara, Vega, Spica and Merak, to name a few. Dr. Aufdenberg successfully modeled the extreme ultraviolet spectral energy distribution of Adhara (epsilon Canis Majoris), the brightest star in the night sky at a wavelength of 50 nanometers. He also participated in one of the first interferometric limb-darkening measurements and modeling of Vega (alpha Lyrae), confirming it to be a pole-on rapidly rotating star. Dr. Aufdenberg recently joined the VERITAS collaboration for stellar intensity interferometry and has co-authored a paper constraining the temperature and age of Merak (beta Ursa Majoris), a star in the Ursa Major moving group.