UBV(RI)_C photometry and spectroscopy of the young open cluster Haffner 19

Details UBV(RI)_C photometry and spectroscopy of the young open cluster Haffner 19 UBV(RI)_C photometry and spectroscopy of the young open cluster Haffner 19

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.283..905m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 283, Issue 3, pp. 905-911.

Astronomy and Astrophysics

Astronomy

12

Hertzsprung-Russell (Hr) Diagram, Open Clusters And Associations: Individual: Haffner 19

Scientific paper

We present accurate CCD photometry in the UBV(RI)_C bands of a 2.9x2.4 arcmin^2 field centred on the young open cluster Haffner 19. Spectral types for 4 members are derived from CCD spectroscopy. 64 probable cluster members are identified down to V=18.1. The cluster lies at 5.0 kpc and suffers from a marked differential reddening [DeltaE(B-V)=0.5] with a mean value E(B-V)=0.44. The extinction law conforms well to the one valid for the diffuse interstellar medium (R_V=3.1). The main sequence is well defined over the 7-mag interval we explored, with spectral types B0 and F8-G0 on the sequence. The fit with theoretical isochrones gives an age of about 6x10^6 yr.

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