Physical and Chemical Structure of the Disk and Envelope of the Class 0/I Protostar L1527

no code implementations • 10 Dec 2020 • Lizxandra Flores-Rivera, Susan Terebey, Karen Willacy, Andrea Isella, Neal Turner, Mario Flock

Here we present a benchmark study of our modeling code, RadChemT, that for the first time uses a chemical model to reproduce ALMA C$^{18}$O (2-1) and CARMA $^{12}$CO (1-0) and N$_{2}$H$^{+}$ (1-0) observations of L1527, that allow us to distinguish the disk, the infalling envelope and outflow of this Class 0/I protostar.

Solar and Stellar Astrophysics Earth and Planetary Astrophysics Astrophysics of Galaxies

A Tale of Two Transition Disks: ALMA long-baseline observations of ISO-Oph 2 reveal two closely packed non-axisymmetric rings and a $\sim$2 au cavity

no code implementations • 7 Oct 2020 • Camilo González-Ruilova, Lucas A. Cieza, Antonio S. Hales, Sebastián Pérez, Alice Zurlo, Carla Arce-Tord, Simón Casassus, Hector Cánovas, Mario Flock, Gregory J. Herczeg, Paola Pinilla, Daniel J. Price, David A. Principe, Dary Ruíz-Rodríguez, Jonathan P. Williams

ISO-Oph 2 is a wide-separation (240 au) binary system where the primary star harbors a massive (M$_{dust}$ $\sim$40 M$_{\oplus}$) ring-like disk with a dust cavity $\sim$50 au in radius and the secondary hosts a much lighter (M$_{dust}$ $\sim$0. 8 M$_{\oplus}$) disk.

Earth and Planetary Astrophysics Solar and Stellar Astrophysics 85-11 J.2