NGC 2571: An intermediate-age open cluster with a White Dwarf candidate

CCD <i>UBVI</i> 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 ×10<SUP>6</SUP> yr. The cluster mass function has a slope larger than a typ...

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Detalles Bibliográficos
Autores principales: Giorgi, Edgard Ervar Salvador, Vázquez, Rubén Ángel, Baume, Gustavo Luis, Seggewiss, W., Will, J. M.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2002
Materias:
Ciencias Astronómicas
H-R diagrams
Open clusters and associations: individual: NGC 2571
Stars: blue stragglers
Stars: chemically peculiar
Stars: luminosity function, mass function
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84919
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:CCD <i>UBVI</i> 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 ×10<SUP>6</SUP> 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.

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