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The combined effects of vertical and horizontal shear instabilities
Pascale Garaud, Saniya Khan, Justin M. Brown
Shear instabilities can be the source of significant amounts of turbulent mixing in stellar radiative zones. Past attempts at modeling their effects (either theoretically or using…
Excitation of gravity waves by fingering convection, and the formation of compositional staircases in stellar interiors
P. Garaud, M. Medrano, J. Brown +2
Fingering convection (or thermohaline convection) is a weak yet important kind of mixing that occurs in stably-stratified stellar radiation zones in the presence of an inverse mean…
Hubble Space Telescope and Ground-Based Observations of V455 Andromedae Post-Outburst
Paula Szkody, Anjum S. Mukadam, Boris T. Gaensicke +8
Hubble Space Telescope spectra obtained in 2010 and 2011, three and four years after the large amplitude dwarf nova outburst of V455 And, were combined with optical photometry and…
Nucleosynthetic Constraints on the Mass of the Heaviest Supernovae
Justin M. Brown, S. E. Woosley
Assuming a Salpeter initial mass function and taking the solar abundances as a representative sample, we explore the sensitivity of nucleosynthesis in massive stars to the truncati…
Chemical Transport and Spontaneous Layer Formation in Fingering Convection in Astrophysics
Justin M. Brown, Pascale Garaud, Stephan Stellmach
A region of a star that is stable to convection according to the Ledoux criterion may nevertheless undergo additional mixing if the mean molecular weight increases with radius. Thi…