uvby-Hbeta CCD Photometry of NGC 1817 and NGC 1807

Details uvby-Hbeta CCD Photometry of NGC 1817 and NGC 1807 uvby-Hbeta CCD Photometry of NGC 1817 and NGC 1807

2004-07-21

arxiv.org/abs/astro-ph/0407456v1

Astronomy and Astrophysics

Astrophysics

11 pages, 8 figures, A&A in press

Scientific paper

10.1051/0004-6361:20041333

We have investigated the area of two NGC entries, NGC 1817 and NGC 1807, with deep CCD photometry in the uvby-Hbeta intermediate-band system. The photometric analysis of a selected sample of stars of the open cluster NGC 1817 yields a reddening value of E(b-y)= 0.19$\pm$0.05, a distance modulus of V0-MV= 10.9$\pm$0.6, a metallicity of [Fe/H]= -0.34$\pm$0.26 and an age of log t = 9.05$\pm$0.05. Our measurements allow us to confirm that NGC 1807 is not a physical cluster.

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