151 citations · 268 across the 6 of their papers we have counts for
6 papers
A quasi-star is born: formation and evolution of accreting quasi-stars as a pathway to Little Red Dots at non-zero metallicity
J. Roman-Garza, C. Charbonnel, D. Schaerer +5
The recently discovered Little Red Dots identified by the James Webb Space Telescope are compact high-redshift sources whose properties have motivated models involving black holes…
Massive stellar cannibals: How stellar mergers drive mass-loss in extremely massive stars
J. Roman-Garza, T. Fragos, C. Charbonnel +3
It has been theorized that the formation of extremely massive and supermassive stars () could plausibly be the outcome of stellar mergers in low metallicity (…
Collision-induced mass loss and mass gain on an extremely massive star. An analytical approach and a static proto-globular cluster test-case
Laura Ramírez-Galeano, Corinne Charbonnel, Tassos Fragos +3
The objective of this study is to analytically explore mass loss and gain induced by stellar collisions on a gas-accreting extremely massive star (aEMS, 10^3 <= M/M_sun <= 10^4). W…
POSYDON: A General-Purpose Population Synthesis Code with Detailed Binary-Evolution Simulations
Tassos Fragos, Jeff J. Andrews, Simone S. Bavera +22
Most massive stars are members of a binary or a higher-order stellar systems, where the presence of a binary companion can decisively alter their evolution via binary interactions.…
The role of core-collapse physics in the observability of black-hole neutron-star mergers as multi-messenger sources
Jaime Román-Garza, Simone S. Bavera, Tassos Fragos +10
Recent detailed 1D core-collapse simulations have brought new insights on the final fate of massive stars, which are in contrast to commonly used parametric prescriptions. In this…
Constraints on barotropic dark energy models by a new phenomenological parameterization
Jaime Roman-Garza, Tomas Verdugo, Juan Magana +1
In this paper, we propose a new phenomenological two parameter parametrization of to constrain barotropic dark energy models by considering a spatially flat FRW universe, ne…