UBVI CCD photometry in NGC 2571 (Giorgi+, 2002)

Details UBVI CCD photometry in NGC 2571 (Giorgi+, 2002) UBVI CCD photometry in NGC 2571 (Giorgi+, 2002)

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ycat..33810884g&link_type=abstract

VizieR On-line Data Catalog: J/A+A/381/884. Originally published in: 2002A&A...381..884G

Physics

Clusters: Open, Photometry: Ccd, Photometry: Ubvri

Scientific paper

CCD UBVI imaging photometry was carried out in the field of the open cluster NGC 2571. From the analysis of our data we state the cluster is at a distance of 1380+/-130pc and its age is 50+/-10x10^6yr. The cluster mass function has a slope larger than a typical Salpeter's law. There are two notorious features in NGC 2571: the cluster contains a high proportion of stars located below the reference line that are serious candidates to be metallic line stars (probably Am-Fm), and shows also a sharp gap along its main sequence that cannot be explained by a random process nor by a biased rejection of cluster members. A striking blue object was detected in the cluster field that could be a white dwarf candidate. We carried out CCD imaging photometry in the Kron-Cousins UBVI system on April 27 and 29, 1994 using a 1024x1024pix CCD with a scale of 0.37"/pix and a field of view of 6.3'x6.3' attached to the 1.54-m Danish telescope at ESO, La Silla, Chile. (1 data file).

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