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NATA: a chemical-picture equation of state for stellar merger hydrodynamics
Natalia Ivanova
We present NATA (Nearly Always Truthful Approximations), a self-contained chemical-picture equation of state for hydrogen-helium-carbon-oxygen mixtures, developed for hydrodynamics…
Simulating a stellar contact binary merger -- II. Obtaining a light curve
Roger Hatfull, Natalia Ivanova
Luminous Red Novae (LRNe) are enigmatic transient events distinguished by a rapid rise in luminosity, a plateau in luminosity, and spectra which become redder with time. The best-o…
Unified Rapid Mass Transfer
Natalia Ivanova, Surjakanta Kundu, Ali Pourmand
We present a method to obtain rapid mass loss rates in binary systems, specifically at the onset of MT episodes. The method unifies atmospheric (underflow) and stream (overfl…
Bridging the gap between luminous red novae and common envelope evolution: the role of recombination energy and radiation force
Zhuo Chen, Natalia Ivanova
Luminous red novae (LRNe) and their connection to common envelope evolution (CEE) remain elusive in astrophysics. Here, we present a radiation hydrodynamic model capable of simulat…