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Limiting the accretion disk light in two mass transferring hot subdwarf binaries
Kunal Deshmukh, Thomas Kupfer, Pasi Hakala +6
We report the results from follow-up observations of two Roche-lobe filling hot subdwarf binaries with white dwarf companions predicted to have accretion disks. ZTF J213056.71+4420…
Synthesizing Spectra from 3D Radiation Hydrodynamic Models of Massive Stars Using Monte Carlo Radiation Transport
William C. Schultz, Benny T. H. Tsang, Lars Bildsten +1
Observations indicate that turbulent motions are present on most massive star surfaces. Starting from the observed phenomena of spectral lines with widths much larger than thermal…
Modules for Experiments in Stellar Astrophysics (MESA): Time-Dependent Convection, Energy Conservation, Automatic Differentiation, and Infrastructure
Adam S. Jermyn, Evan B. Bauer, Josiah Schwab +19
We update the capabilities of the open-knowledge software instrument Modules for Experiments in Stellar Astrophysics (MESA). The new auto_diff module implements automatic different…
3D Hydrodynamics of Pre-supernova Outbursts in Convective Red Supergiant Envelopes
Benny T. -H. Tsang, Daniel Kasen, Lars Bildsten
Eruptive mass loss likely produces the energetic outbursts observed from some massive stars before they undergo core-collapse supernovae (CCSNe). The resulting dense circumstellar…
Shock Breakout in 3-Dimensional Red Supergiant Envelopes
Jared A. Goldberg, Yan-fei Jiang, Lars Bildsten
Using Athena++, we perform 3D Radiation-Hydrodynamic calculations of the radiative breakout of the shock wave in the outer envelope of a red supergiant (RSG) which has suffered cor…