UBVI CCD photometry of M35 (NGC 2168)

被引：72
作者：
Sung, H
Bessell, MS
机构：
[1] Seoul Natl Univ, Res Inst Basic Sci, Seoul 151742, South Korea
[2] Australian Natl Univ, Mt Stromlo & Siding Spring Observ, Weston, ACT 2611, Australia
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1999年 / 306卷 / 02期
关键词：
Hertzsprung-Russell (HR) diagram; open clusters and associations : individual : M35 (NGC 2168);
D O I：
10.1046/j.1365-8711.1999.02522.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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 approximate to 0.008, i.e. [Fe/H] approximate to-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.
引用
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页码：361 / 370
页数：10
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