INVESTIGADORES
PIATTI Andres Eduardo
artículos
Título:
Composite Mv versus (V-I)o Diagram for template open clusters
Autor/es:
PIATTI, ANDRÉS E.; CLARIA OLMEDO, JOSÉ JUAN; BICA, EDUARDO
Revista:
ASTRONOMY & ASTROPHYSICS. SUPPLEMENT SERIES (PRINT)
Referencias:
Año: 1998 vol. 116 p. 263 - 285
ISSN:
0365-0138
Resumen:
New CCD VI photometric data for 10 template open clusters with
accurately determined fundamental parameters are presented. From the
observed V versus V - I diagrams of the clusters, fiducial sequences
have been defined and transformed into the Mv versus (V - I)0 diagram by
averaging sequences of template open clusters with similar ages. The
resulting composite Mv versus (V - I)0 diagram presents a homogeneous
set of empirical isochrones in the age range between 5 Myr and 4 Gyr.
These empirical isochrones show an overall very good agreement with
those computed from stellar evolutionary models. Theoretical isochrones
with moderate overshooting fit the observed main sequences better than
the canonical ones for clusters older than 600 Myr. The present set of
empirical isochrones will be useful for the study of faint reddened open
clusters