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2022
DOI: 10.48550/arxiv.2202.09395
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A new visit to the variable stars in M56 and its colour magnitude diagram structure

D. Deras,
A. Arellano Ferro,
I. Bustos Fierro
et al.

Abstract: fotométrico y un análisis de membresía del cúmulo globular M56 (NGC 6779) con imágenes CCD VI. Lo anterior permitió construir un diagrama color-magnitud sin contaminación de estrellas de campo, que facilita la comparación con modelos de isócronas, rama horizontal de edad cero (ZAHB) y trazas evolutivas post-ZAHB. Modelos con masas de 0.5 M y envolventes de 0.04 -0.18 M , representan toda la rama horizontal (HB). Modelos con masas ∼ 0.68 M son adecuados para estrellas RR Lyrae, mientras que masas de ∼ 0.56 M y … Show more

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