We present photometric and spectroscopic analysis of the Hubble Sandage variable AF And in M31 .
The data has been taken under the Nainital Microlensing Survey during 1998-2002 and follow-up observations were carried out until 2011 .
During this period , photometric observations in Cousins R and I bands were obtained for 169 nights spanning over about 5000 days . AF And has shown a prominent outburst around mid-January in 1999 followed by a gradual decrease in brightness of about 1.5 mag in the next 3 years with a declining rate of \sim 0.0015 mag day ^ { -1 } leading to a quiescent phase at the end of 2001 .
After lying low for about 9 years , AF And again went through a secondary outburst phase in late 2010 with an amplitude of 0.44 mag where it lasted for one year before fading back to its quiescence phase .
The spectroscopic observations of AF And show prominent Balmer and He I emission lines along with the comparatively weaker FeII and [ FeII ] emissions .
Asymmetric emission line profiles in its spectrum imply the mass loss rate of about 2.2 \times 10 ^ { -4 } M _ { \odot } yr ^ { -1 } through the stellar winds in the photosphere .
Using SED fitting , we find the photospheric temperature of 33,000 \pm 3000 K during the visual minimum .
Using a weak P Cygni profile of HeI emission line , the wind terminal velocity for AF And is found to be around 280-300 km s ^ { -1 } .