CCD-Delta a and BVR photometry of NGC 7296

Details CCD-Delta a and BVR photometry of NGC 7296 CCD-Delta a and BVR photometry of NGC 7296

2005-07-25

arxiv.org/abs/astro-ph/0507572v1

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures, accepted by AN

Scientific paper

10.1002/asna.200510407

The first CCD photometric investigation of the open cluster NGC 7296 up to now was performed within the narrow band Delta a photometric system, which enables us to detect peculiar objects. A deeper investigation of that cluster followed, using the standard BVR-Bessel filter set. The age and E(B-V) was determined independently to log t= 8.0 and 0.15 respectively by using Delta a and broadband photometry. In total five Be/Ae objects and two metal-weak stars showing significant negative Delta a-values as well as one classical chemically peculiar star could be identified within that intermediate age open cluster.

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