Abstract:
Supernovae (SNe) are the giant stellar explosions that brie
y outshines
the whole galaxy and enhances chemical enrichment. The thesis highlights
a group of SNe with diminishing Hydrogen envelope. This mostly
comprises of two groups - the stripped envelope group (SE-SNe, type IIb,
Ib and Ic SNe) which strips o their outer envelopes due to high stellar
winds or accretion with a nearby companion and the interacting SNe
(type IIn, Ibn SNe) group which gains outer envelope due to interaction
with a nearby circumstellar medium (CSM). In this thesis, we studied
in depth the photometric and spectroscopic analysis of this group and
derived a correlation between the members.
