Speaker
Ian Czekala
Description
Circumbinary planets form from material in protoplanetary disks. Therefore it is reasonable to expect that planets would inherit their orbits from the distribution of this material, at least in a broad and initial sense. In this talk, I will review observations of circumbinary material across stellar ages: from the earliest protostellar and class 0/I systems, through the "classic" class II protoplanetary disks orbiting orbiting pre-main sequence stars, to circumbinary debris disks orbiting main sequence stars. I will cover the diverse means by which these circumbinary systems are observed with a special focus on how the mutual inclination between the stellar and disk planes is calculated and the ambiguities that may result.
