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<i>UBVI</i>CCD photometry of M35 (NGC 2168)

Hwankyung SungResearch Institute of Basic Sciences, Seoul National University, Seoul 151‐742, KoreaM. S. BessellMount Stromlo and Siding Spring Observatories, The Australian National University, Private Bag, Weston Creek PO, ACT 2611, Australia

1999en

ABI

Annotatsiya

UBVI CCD photometry has been obtained for the intermediate-age open cluster M35 (NGC 2168). From this new photometry we derived the cluster parameters (V0−MV= 9.60 ± 0.10 mag, E(B−V) = 0.255 ± 0.024 mag), age (log tage=8.3 ±0.3) and a photometric abundance (˜Z 0.008, i.e. [Fe/˜H] - 0.3) from comparison with theoretical isochrones of the Padova group. A minimum binary frequency (35 ± 5 per cent) was estimated from the distribution of distance moduli of unevolved proper motion members. Faint photometric members were selected by using differences in the reddening effect on colour indices.

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Identifikatorlar

DOI: 10.1046/j.1365-8711.1999.02522.x

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