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uvbyCaHbeta CCD Photometry of Clusters. III. The Most Metal-Rich Open Cluster, NGC 6253
B. A. Twarog, B. J. Anthony-Twarog, N. De Lee
CCD photometry on the intermediate-band uvbyCaH-beta system is presented for the old open cluster, NGC 6253. Despite a high level of field star contamination due to its location to…
Caby Photometry of the Hyades: Comparisons to the Field Stars
B. J. Anthony-Twarog, B. A. Twarog, J. Yu
Intermediate-band photometry of the Hyades cluster on the Caby system is presented for dwarf stars ranging from spectral type A through late K. A mean hk, b-y relation is construct…
Photometric Abundances for G-Dwarfs: A Cautionary Tale
Bruce A. Twarog, Barbara J. Anthony-Twarog, Delora Tanner
Analysis of cluster and field star uvby data demonstrates the existence of a previously undetected discrepancy in a widely used photometric metallicity calibration for G dwarfs. Th…