Kinematic studies of protoplanetary discs are becoming a valuable method for uncovering hidden companions. While there exists a substantial amount of literature on the understanding of planet-disc interactions and their observational implications, little attention has been made towards circumbinary discs. Using 3D hydrodynamical simulations post-processed with Monte Carlo radiative transfer, I devised two quantitative criteria that can differentiate circumbinary discs from other protoplanetary discs. I also found that Doppler flips, spiral arms, eccentric gas motion, and vortex-like kinematic signatures are commonly seen in circumbinary discs. These complex kinematic structures may explain some of the observed, and potentially misinterpreted, kinematic signatures seen in the literature.
BIO
Josh Calcino completed his PhD at The University of Queensland in 2021 under the supervision of Prof. Tamara Davis and Prof. Daniel J. Price, in the fields of cosmology and planet formation. He was a Director's Postdoctoral Fellow at the Los Alamos National Laboratory from 2021 until 2023, where he worked on topics in planet formation and binary black hole mergers inside of the discs around supermassive black holes. He has recently joined Tsinghua University in Beijing as a Shuimu Scholar with Chris Ormel and Xuening Bai.
