15 citations · 30 across the 11 of their papers we have counts for
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Observational signatures of thermonuclear electron-capture supernovae -- Ne II line strengthening and color evolution as traces of the explosion mechanism
Alexander Holas, Fionntan P. Callan, Samuel W. Jones +7
Thermonuclear electron-capture supernovae (tECSNe) are a potential fate of certain intermediate mass stars forming ONe cores at the end of their evolution. Simulations suggest that…
Localized O production in white dwarf mergers
Alexander Holas, Veronica Agaeva, Friedrich K. Roepke +5
The merger of a He white dwarf (WD) and a CO WD is the favored formation channel for R Coronae Borealis (RCB) stars. These stars exhibit ratio…
Drawing the line between explosion and collapse in electron-capture supernovae -- I. Impact of conductive flame speeds and ignition conditions on the explosion mechanism
Alexander Holas, Samuel W. Jones, Friedrich K. Roepke +5
Electron-capture supernovae (ECSNe) are commonly thought to result in a collapse to a neutron star. Recent work has shown that a thermonuclear explosion is also a possible outcome.…
The asymmetry of white dwarf double detonations and the observed scatter around the Phillips relation
Alexander Holas, Friedrich K. Roepke, Rüdiger Pakmor +6
Recent Type Ia supernova (SN Ia) simulations featuring a double detonation scenario have managed to reproduce the overall trend of the Phillips relation reasonably well. However, m…
Thermonuclear explosions as Type II supernovae
Alexandra Kozyreva, Javier Moran-Fraile, Alexander Holas +5
We consider a binary stellar system, in which a low-mass, of 0.6 Msun, carbon-oxygen white dwarf (WD) mergers with a degenerate helium core of 0.4 Msun of a red giant. We analyse t…
Faint calcium-rich transient from the double-detonation of a carbon-oxygen white dwarf star
J. Moran-Fraile, A. Holas, F. K. Roepke +2
We have computed a three-dimensional hydrodynamic simulation of the merger between a massive () helium white dwarf (He WD) and a low-mass () carbon-oxyg…
Family dispute: do Type IIP supernova siblings agree on their distance?
Géza Csörnyei, Christian Vogl, Stefan Taubenberger +7
Context: Type II supernovae provide a direct way to estimate distances through the expanding photosphere method, which is independent of the cosmic distance ladder. A recently intr…