In this thesis, our aim is to understand and constrain star formation in different types of galax-
ies. For our study, we have chosen two samples – (i) A sample of late-type galaxies having recent
and active star formation. (ii) A sample of early-type galaxies which are normally believed to
be quiescent galaxies. Both the samples are selected from SDSS (Sloan Digital Sky Survey). We
present here –
(1) Data analysis of 20 late-type galaxies with their star formation rate (SFR) and Hα mor-
phology using 1.3-m Devasthal telescope.
(2) A detailed study of nuclei of Mrk 22 (Blue compact dwarf galaxy) in spectroscopy using
2-m HCT.
(3) Constraining very low-level SFR in a sample of early-type galaxies using 1.4-GHz radio
continuum data from VLA.