HST PHOTOMETRY OF M31 GLOBULAR CLUSTERS
  AT THE BOLOGNA OBSERVATORY

                                                                                     




HST/ACS colour-magnitude diagrams of M31 globular clusters (2009A&A...507.1375)
Perina S., Federici L., Bellazzini M., Cacciari C., Fusi Pecci F., Galleti S.



HST/ACS color-magnitude diagrams of candidate intermediate-age M 31 globular clusters.
The role of blue horizontal branch (2011A&A...531A.155P)

Perina S., Galleti S., Fusi Pecci F., Bellazzini M., Federici L., Buzzoni A.



An HST/WFPC2 survey of bright young clusters in M31. IV. Ages and mass estimates (2010A&A...511A..23P)
Perina S., Cohen J. G., Barmby P., Beasley M. A., Bellazzini M., Brodie J. P., Federici L., Fusi Pecci F., Galleti S., Hodge P. W., Huchra J. P.,
Kissler-Patig M., Puzia T. H.; Strader, J.










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