A Survey of Local Group Galaxies Currently Forming Stars. I. UBVRI Photometry of Stars in M31 and M33

@article{Massey2006ASO,
  title={A Survey of Local Group Galaxies Currently Forming Stars. I. UBVRI Photometry of Stars in M31 and M33},
  author={Philip Massey and Knut A. G. Olsen and Paul William Hodge and Shay B. Strong and George H. Jacoby and Wayne M. Schlingman and R. Connon Smith},
  journal={The Astronomical Journal},
  year={2006},
  volume={131},
  pages={2478-2496}
}
We present UBVRI photometry obtained from Mosaic images of M31 and M33 using the Kitt Peak National Observatory 4 m telescope. We describe our data reduction and automated photometry techniques in some detail, as we will shortly perform a similar analysis of other Local Group galaxies. The present study covered 2.2 deg2 along the major axis of M31 and 0.8 deg2 on M33, chosen so as to include all of the regions currently active in forming massive stars. We calibrated our data using photometry… 
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