NGC 2571: An intermediate-age open cluster with a White Dwarf candidate
| Autor: | Gustavo Baume, Wilhelm Seggewiss, J. M. Will, Ruben Angel Vazquez, E. E. Giorgi |
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| Jazyk: | angličtina |
| Rok vydání: | 2002 |
| Předmět: |
Physics
Ciencias Astronómicas individual: NGC 2571 [Open clusters and associations] Stars: luminosity function mass function H-R diagrams Stars: blue stragglers Astronomy White dwarf Astronomy and Astrophysics Astrophysics blue stragglers [Stars] Blue straggler luminosity function mass function [Stars] Photometry (optics) Stars Star cluster Space and Planetary Science Stars: chemically peculiar Reference line Open clusters and associations: individual: NGC 2571 Open cluster Dwarf galaxy chemically peculiar [Stars] |
| Zdroj: | SEDICI (UNLP) Universidad Nacional de La Plata instacron:UNLP |
| Popis: | 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 504±10 ×106 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. Facultad de Ciencias Astronómicas y Geofísicas |
| Databáze: | OpenAIRE |
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