The open cluster Havlen-Moffat No. 1 revisited

  title={The open cluster Havlen-Moffat No. 1 revisited},
  author={Ruben Angel Vazquez and G. Baume},
  journal={Astronomy and Astrophysics},
A deep CCD UBVRIphotometric survey combined with UBVRI polarimetric observations of 21 bright stars was carried out in the region of the open cluster Havlen-Moffat No. 1. Our data reveal that the extinction law in this cluster is variable and that six cluster stars show very high polarisation values (>4%), probably because of the presence of a nearby small dust cloud. The cluster is at a distance of d = 3300 pc, it is 2-4 Myr old and the initial mass function of its most massive stars (A4 > 3 1… 
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