UBV (RI)C photometry and spectroscopy of the young open cluster Haffner 19
Open Access
- 1 December 1996
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 283 (3) , 905-911
- https://doi.org/10.1093/mnras/283.3.905
Abstract
We present accurate CCD photometry in the UBV (RI)C bands of a 2.9 × 2.4 arcmin2 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 [ΔE (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 (Rv = 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 6 × 106 yr.Keywords
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