CCD uvbyβ photometry of young open clusters -: I.: The double cluster h and χ Persei

被引：21

作者：

Capilla, G

Fabregat, J ^{[1
]}

机构：

[1] Univ Valencia, Astron Observ, E-46100 Burjassot, Spain

[2] Observ Paris, GEPI FRE K2459, CNRS, F-92195 Meudon, France

来源：

ASTRONOMY & ASTROPHYSICS | 2002年 / 394卷 / 02期

关键词：

techniques : photometric; stars : early-type; Galaxy : open clusters and associations : individual : NGC 869; NGC; 884;

D O I：

10.1051/0004-6361:20021200

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present CCD uvbybeta photometry for stars in the nuclei of the young double cluster h and chi Persei. We find that the reddening is highly variable through the h Per nucleus, increasing from west to east, with values ranging from E(b - y) = 0.328 +/- 0.022 in the western part to E(b - y) = 0.465 +/- 0.024 in the south-east. Towards chi Per the reddening is fairly constant, with E(b - y) = 0.398 +/- 0.025. Both clusters share a common distance modulus of 11.7 +/- 0.1 mag, and an age of log t = 7.10 +/- 0.05 years.

引用

页码：479 / 488

页数：10

共 34 条

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