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

页码：297 / 306

页数：10

共 39 条

[1]

Bessell MS, 1998, ASTRON ASTROPHYS, V337, P321

[2]

Bragaglia A, 2002, ASTR SOC P, V274, P385

[3] Intermediate-age open clusters: Collinder 110 [J].