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A long-term (1995-2016) survey for novae in the nearby Andromeda galaxy (M31)was conducted as part of the Research-Based Science Education initiative.During the course of the survey 180 nights of observation were completed atKitt Peak, Arizona. A total of 262 novae were either discovered or confirmed,40 of which have not been previously reported. Of these, 203 novae form aspatially-complete sample detected by the KPNO/WIYN 0.9-m telescope within a$20'\times20'$ field centered on the nucleus of M31. An additional 50 novae arepart of a spatially-complete sample detected by the KPNO 4-m telescope within alarger $36'\times36'$ field. Consistent with previous studies, it is found thatthe spatial distribution of novae in both surveys follows the bulge light ofM31 somewhat more closely than the overall background light of the galaxy.After correcting for the limiting magnitude and the spatial and temporalcoverage of the surveys, a final nova rate in M31 is found to be$R=40^{+5}_{-4}$ yr$^{-1}$, which is considerably lower than recent estimates.When normalized to the $K$-band luminosity of M31, this value yields aluminosity-specific nova rate, $\nu_K = 3.3\pm0.4$ yr$^{-1} [10^{10}L_{\odot,K}]^{-1}$. By scaling the M31 nova rate using the relative infraredluminosities of M31 and our Galaxy, a nova rate of $R_\mathrm{G}=28^{+5}_{-4}$is found for the Milky Way.

The Rate and Spatial Distribution of Novae in M31 as Determined by a Twenty-Year Survey