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.
@article{arxiv.astro-ph/0507572,
title = {CCD-Delta a and BVR photometry of NGC 7296},
author = {M. Netopil and E. Paunzen and H. M. Maitzen and A. Claret and K. Pavlovski and E. Tamajo},
journal= {arXiv preprint arXiv:astro-ph/0507572},
year = {2009}
}