SUTIRTHA SENGUPTA
I am student member of the Bonn-Cologne Graduate School at the University of Bonn working with Prof.Dr. R.Izzard in the Stellar Physics group. I am working on binary stellar evolution using binary population synthesis code: binary_c/nucsyn which includes detailed nucleosynthesis , in an attempt to explain the origin of peculiar carbon stars.
Currently, we are exploring a binary channel for the mysterious J-type carbon stars which
still do not fit into the standard scheme of stellar evolution of
single stars. It involves nova systems in which the white dwarf
companion evolves into a J-star with all its peculiar chemical
signatures e.g. low 12C/13C ratio, no s-process enhancements etc.
I am also interested in the origin of metal-poor carbon stars (e.g., CEMP stars in the Galactic halo) -their implications on the formation history of our Galaxy, and progenitors of Type Ia supernovae as "standard candles" in cosmology
Contact:
Sutirtha Sengupta
Argelander-Institut für Astronomie
Auf dem Hügel 71
D-53121 Bonn
Room 1.026 Phone +49 228 73-3521 Email sutirtha@astro.uni-bonn.de