CCD Stromgren Photometry of Young Reddened Clusters

Details CCD Stromgren Photometry of Young Reddened Clusters CCD Stromgren Photometry of Young Reddened Clusters

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aj....113..713d&link_type=abstract

Astronomical Journal v.113, p. 713-721 (1997)

Astronomy and Astrophysics

Astronomy

13

Scientific paper

The capabilities of CCD uvby photometry for the study of reddened young clusters are investigated. Observations of four fields in the direction of the clusters Basel 1, Berkeley 86, NGC 6704, and NGC 6756, with a total of 1665 stars measured in at least the y and b bands, produce new estimates for the clusters parameters. The results are compared to those from previously published studies in different photometric systems showing good agreement in the values of color excess and distance modulus, with the exception of NGC 6756, for which an essentially larger distance is found. Furthermore, the ages estimated for this cluster, Basel 1, and NGC 6704 are found to be higher than previously assumed, in particular for the last one. The presence of red giants as cluster members is suggested in Basel 1, NGC 6704, and NGC 6756.

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