Havlen-Moffat No. 1 UBVRI photometry (Vazquez+, 2001)

Details Havlen-Moffat No. 1 UBVRI photometry (Vazquez+, 2001) Havlen-Moffat No. 1 UBVRI photometry (Vazquez+, 2001)

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ycat..33710908v&link_type=abstract

VizieR On-line Data Catalog: J/A+A/371/908. Originally published in: 2001A&A...371..908V

Physics

1

Clusters: Open, Photometry: Ubvri, Mk Spectral Classification

Scientific paper

A deep CCD UBVRI photometric 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 es 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=3300pc, it is 2-4Myr old and the initial mass function of its most massive stars (M>3M&sun;) has a flat slope of x about of 0.7. As an additional result, it was possible to reconcile the absolute magnitudes of the two WN7-type members using the R-values valid in the regions where they are located. (2 data files).

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