WIYN Open Cluster Study: Precision UBVRI CCD Photometry of Open Cluster NGC 2423

Details WIYN Open Cluster Study: Precision UBVRI CCD Photometry of Open Cluster NGC 2423 WIYN Open Cluster Study: Precision UBVRI CCD Photometry of Open Cluster NGC 2423

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.1415b&link_type=abstract

American Astronomical Society Meeting 203, #14.15; Bulletin of the American Astronomical Society, Vol. 35, p.1230

Astronomy and Astrophysics

Astronomy

Scientific paper

We present refined basic parameters of the anticenter, intermediate-aged open cluster NGC 2423 using broad band photometry. Observations were made using the S2KB CCD during January 2003 in U, B, V, R and I filters with the WIYN 0.9m telescope in a central 20'x20' field. Photometry was performed using DAOPHOT II, allowing for spatially-dependent PSF's and aperture corrections, and including iterative neighbor subtraction. Using multiple color-color diagrams, we find E(B-V) = 0.10+/-0.01+/-sys mag and [Fe/H] = -0.07+/-0.03+/-sys. Application of Yale-Yonsei (2002) isochrones to multiple color-magnitude diagrams yields m-M = 10.05+/-0.05+/-sys mag, D = 885 +/-20+/-sys pc and an age of 950 +/-25+/-sys Myr. This REU (Indiana Site) project falls under the auspices of the WIYN Open Cluster Study (WOCS), a collaboration between Indiana University, Yale University, the University of Wisconsin, and the National Optical Astronomical Obsevatory (NOAO). This work is supported by NSF Grants AST-0139617 and AST-0206202.

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