Incidencia de estrellas peculiares en cumulos abiertos

RODRIGUEZ LEDESMA, M.V.; PINTADO, O.I.; PAUNZEN, E.

Boletin de la Asociacion Argentina de Astronomia

Lugar: Buenos Aires; Año: 2004 p. 189 - 192

We analyse the incidence of CP stars in open clusters to determine when these peculiarities appeared. With the (a photometric system, which has been very successful in detecting new chemically peculiar stars, and the Jorge Sahade telescope in CASLEO, we achieve an accuracy of tens of millimagnitudes. We present (a photometry for two intermediate age open clusters, Pismis 19 and NGC 6005. Our results, coincident with other authors, favour the theory that the CP phenomenon needs at least 106 years to start being effective.