Photometry of open clusters. III. HR 4684 and HD 106103 in Coma Berenices.

Details Photometry of open clusters. III. HR 4684 and HD 106103 in Coma Berenices. Photometry of open clusters. III. HR 4684 and HD 106103 in Coma Berenices.

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993rmxaa..25..129p&link_type=abstract

Revista Mexicana de Astronomia y Astrofisica, Vol. 25, No. 2, p. 129 - 141

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Open Clusters: Stroemgren Photometry, Open Clusters: Delta Scuti Stars, Open Clusters: Distances, Open Clusters: Ages, Delta Scuti Stars: Light Curves

Scientific paper

Differential photoelectric photometry of the Delta Scuti stars HR 4684 and HD 106103 is presented. Membership of these stars to the cluster is established through a compilation from the literature of uvby-β photometry of 69 stars in the direction of Coma Berenices. Reddening and distance are determined to be of E(b-y) = 0.002 and 81.75 pc, respectively. An age for the cluster of 5×108yr is derived by comparison with theoretical isochrones. Values of log Teff and log g are determined for each member star to the cluster. No significant physical difference is found between the variable stars and others with the same physical characteristics. Determination of several Ap stars is established.

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