Hello and welcome to my personal webpage! I am a stellar astrophysicist with a broad interest in massive stars. I have experience in stellar evolution modelling following the life and death of massive stars, as well as atmosphere modelling studying their strong stellar wind structure and mass-loss physics.
Recent Publications
- Hydrodynamical mass-loss rates for Very Massive Stars. I. Investigating the wind kink
Gautham N. Sabhahit, Jorick S. Vink, Andreas A. C. Sander
Radiation-driven winds are ubiquitous in massive stars, but in Very Massive Stars (VMSs), mass loss dominates their evolution, chemical yields, and ultimate fate. Theoretical predictions have often relied on extrapolations... - Minimum and maximum mass-luminosity relations for stripped stars
Gautham N. Sabhahit, Jorick S. Vink, Andreas A. C. Sander, Varsha Ramachandran
Envelope stripping, whether through single-star wind mass loss or binary mass transfer, is a key evolutionary pathway for the formation of classical Wolf-Rayet stars and lower mass stripped helium (He)... - A new mass estimate method with hydrodynamical atmospheres for very massive WNh stars
Gautham N. Sabhahit, Jorick S. Vink, Andreas A. C. Sander, Matheus Bernini-Peron, Paul A. Crowther, Roel R. Lefever, Tomer Shenar
Very massive stars with masses over 100 M⊙ are key objects in the Universe for our understanding of chemical and energetic feedback in the Universe, but their evolution and fate... - Stellar expansion or inflation?
Gautham N. Sabhahit, Jorick S. Vink
While stellar expansion after core-hydrogen exhaustion related to thermal imbalance has been documented for decades, the physical phenomenon of stellar inflation that occurs close to the Eddington limit has only...