Volume 381, Number 3, JanuaryIII 2002
|Page(s)||884 - 893|
|Section||Galactic structure, stellar clusters, and populations|
|Published online||15 January 2002|
NGC 2571: An intermediate-age open cluster with a White Dwarf candidate*
Facultad de Ciencias Astronómicas y Geofísicas, UNLP, and IALP (UNLP-CONICET), Paseo del Bosque s/n, 1900, La Plata, Argentina
2 Fellow of Comisión de Investigaciones Científicas de la Provincia de Buenos Aires, Argentina
3 Post-doctoral fellow of CONICET
4 Sternwarte der Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
Corresponding author: E. Giorgi, firstname.lastname@example.org
Accepted: 18 October 2001
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 ± 130 pc and its age is yr. 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.
Key words: open clusters and associations: individual: NGC 2571 / stars: luminosity function, mass function / H-R diagrams / stars: chemically peculiar / stars: blue stragglers
© ESO, 2002
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