  We present results of study, using observed and published spectra in optical
region, of few novae (T CrB, GK Per, RS Oph, V3890 Sgr and V745 Sco) in their
quiescence phase and a symbiotic star (BX Mon). Observations were made using
the facilities available at 2m Himalayan Chandra Telescope (HCT). Generally,
the spectra show prominent low ionization emission features of hydrogen,
helium, iron and oxygen and TiO absorption features due to the cool secondary
component; T CrB and GK Per show higher ionization lines. We used
photoionization code CLOUDY to model these spectra. From the best-fit models,
we have estimated the physical parameters, e.g., temperature, luminosity &
hydrogen density; estimated elemental abundances and other parameters related
to the system. By matching the spectra of various giants with the absorption
features and from the best-fit, we determined the type of secondaries and also
their contribution to the spectra.
