105 citations · 233 across the 10 of their papers we have counts for
10 papers
Can pre-supernova winds from massive stars enrich the interstellar medium with nitrogen at high redshift?
Arpita Roy, Mark R. Krumholz, Michael A. Dopita +3
Understanding the nucleosynthetic origin of nitrogen and the evolution of the N/O ratio in the interstellar medium is crucial for a comprehensive picture of galaxy chemical evoluti…
The impact of carbon and oxygen abundances on the metal-poor initial mass function
Piyush Sharda, Anish M. Amarsi, Kathryn Grasha +5
Star formation models predict that the metal-poor initial mass function (IMF) can be substantially different from that observed in the metal-rich Milky Way. This changeover occurs…
Progenitors of Long-Duration Gamma-ray Bursts
Arpita Roy
We review the current scenario of long-duration Gamma-ray burst (LGRB) progenitors, and in addition, present models of massive stars for a mass range of $10\text{--}150 \, \mathrm{…
Stromlo Stellar Tracks: non-solar scaled abundances for massive stars
K. Grasha, A. Roy, R. S. Sutherland +1
We present the Stromlo Stellar Tracks, a set of stellar evolutionary tracks, computed by modifying the Modules for Experiments in Stellar Astrophysics (MESA) 1D stellar evolution p…
On the origin of nitrogen at low metallicity
Arpita Roy, Michael A. Dopita, Mark R. Krumholz +3
Understanding the evolution of the N/O ratio in the interstellar medium (ISM) of galaxies is essential if we are to complete our picture of the chemical evolution of galaxies at hi…
Helium and Nitrogen Enrichment in Massive Main Sequence Stars: Mechanisms and Implications for the Origin of WNL Stars
Arpita Roy, Ralph S Sutherland, Mark R Krumholz +2
The evolutionary paths taken by massive stars with remain substantially uncertain. They begin their lives as main sequence (MS) O-stars. Dependin…