Stroemgren uvby photometry of the open clusters NGC 6192 and NGC 6451

Details Stroemgren uvby photometry of the open clusters NGC 6192 and NGC 6451 Stroemgren uvby photometry of the open clusters NGC 6192 and NGC 6451

2003-03-10

arxiv.org/abs/astro-ph/0303192v1

Astron.Astrophys. 403 (2003) 937-942

Astronomy and Astrophysics

Astrophysics

5 pages, 4 figures, accepted by A&A

Scientific paper

10.1051/0004-6361:20030443

We have investigated the two open clusters NGC 6192 and NGC 6451 for which widely different reddening values and thus ages and distances can be found in the literature via Stroemgren uvby photometry. Our measurements allow to disentangle the apparent discrepancies from the literature and to derive new accurate values. From appropriate calibrations we find that the overall abundance for NGC 6192 is about solar whereas a subsolar value for NGC 6451 was estimated. From two previous reported photometrically candidate CP stars, one within NGC 6192 shows Stroemgren indices typical for a B8Si star whereas the other object of NGC 6451 is most probably a foreground G-type star.

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