CCD uvby-beta photometry of young open clusters. I. The double cluster h and chi Persei

Details CCD uvby-beta photometry of young open clusters. I. The double cluster h and chi Persei CCD uvby-beta photometry of young open clusters. I. The double cluster h and chi Persei

2002-06-04

arxiv.org/abs/astro-ph/0206060v1

Astron.Astrophys. 394 (2002) 479-488

Astronomy and Astrophysics

Astrophysics

10 pages, 11 figures, submitted to Astronomy and Astrophysics. Tables 6 and 7 can be found in electronic form at http://pleion

Scientific paper

10.1051/0004-6361:20021200

We present CCD uvby-beta 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 Persei 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+-0.025 in the south-east. Towards chi Persei 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.

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