Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999mnras.306..361s&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 306, Issue 2, pp. 361-370.
Astronomy and Astrophysics
Astronomy
51
Hertzsprung, Russell (Hr) Diagram, Open Clusters And Associations: Individual: M35 (Ngc 2168)
Scientific paper
UBVI CCD photometry has been obtained for the intermediate-age open cluster M35 (NGC 2168). From this new photometry we derived the cluster parameters (V_0 - M_V= 9.60 +/- 0.10 mag, E(B-V) = 0.255 +/- 0.024 mag), age (log t_age=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.
Bessell Michael S.
Sung Hwangkyung
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