UBVI photometry of the intermediate-age open cluster NGC 6939

被引：20
|
作者：
Andreuzzi, G
Bragaglia, A
Tosi, M
Marconi, G
机构：
[1] INAF, Osservatorio Astron Roma, I-00040 Monte Porzio Catone, Italy
[2] Telescopio Nazl Galileo, Santa Cruz De La Palma 38700, Spain
[3] INAF, Osservatorio Astron Bologna, I-40127 Bologna, Italy
[4] ESO, Santiago, Chile
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2004年 / 348卷 / 01期
关键词：
Hertzsprung-Russell (HR) diagram; open clusters and associations : general; open clusters and associations : individual : NGC 6939;
D O I：
10.1111/j.1365-2966.2004.07366.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present CCD UBVI photometry of the nearby, intermediate-age open cluster NGC 6939. Using the synthetic colour-magnitude diagram technique we estimate the following parameters: age between 1.3 and 1.0 Gyr (depending on whether or not overshooting is considered), reddening 0.34 less than or equal to E(B-V) less than or equal to 0.38 and distance modulus 11.3 less than or equal to (m-M)(0) less than or equal to 11.4.
引用
收藏
页码：297 / 306
页数：10
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