Observations of Unusual CO Fractionation in Young Stellar Objects
We are using high resolution CO ro-vibrational absorption spectra of CO isotopologues obtained with the Cryogenic Infrared Echelle Spectrograph (CRIRES-VLT, R=100,000) to derive precise isotope ratios of carbon and oxygen for young stellar objects (YSOs) in various stages of evolution. I will present our results showing varying oxygen and carbon fractionations in several YSOs, including our most recent findings of mysteriously high 12C/13C fractionation in several sources. I will describe how observations of YSOs aid our understanding of the evolution of protoplanetary disks and the solar nebula.
Lyons and Young (2005) ...about self-shielding.
Planet Lunch talks are held 12:00 - 13:00 and are informal in nature. Bring your (planet) lunch and bring your questions.
Jewitt home ESS home e-mail: David Jewitt