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The Development of the Red Giant Branch in Magellanic Cloud Clusters: Progress Report

Published online by Cambridge University Press:  19 July 2016

R. Buonanno ,
C. E. Corsi ,
F. Fusi Pecci ,
L. Greggio ,
A. Renzini  and
A. V. Sweigart
R. Buonanno
Affiliation:
Astronomical Observatory, Rome
C. E. Corsi
Affiliation:
Astronomical Observatory, Rome
F. Fusi Pecci
Affiliation:
Department of Astronomy, Bologna
L. Greggio
Affiliation:
Department of Astronomy, Bologna
A. Renzini
Affiliation:
Department of Astronomy, Bologna
A. V. Sweigart
Affiliation:
NASA Goddard Space Flight Center

Extract

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In close connection with a parallel theoretical study (see Sweigart, Greggio and Renzini 1987) CCD photometry in the B and V bands of star clusters in the LMC and SMC was started in 1983 using the ESO telescopes. To study the development of the red giant branch (RGB) we selected intermediate age clusters using the following criteria: 1) integrated (B-V) color between 0.3 and 0.6 and/or 2) membership in the type IV group of the Searle, Wilkinson and Bagnuolo (1980) classification (SWB). A few other clusters (e.g. NGC 121) were observed for calibration purposes. The observed clusters are NGC 121, 152, 1756, 1831, 1841, 1987, 2164, 2173, 2209, 2249, 1466, 1866, 2107, 2108 and 2134 and good or very good quality CM diagrams have been obtained for the first ten of them. Out of this list, those clusters with a well developed RGB are NGC 121, 152, 1841, 1987 and 2173. Using the CCD frames, integrated (B-V) colors have also been obtained for some of the clusters.

Type
Chapter VIII. Poster Papers on Cluster Systems in Nearby Galaxies
Information
Symposium - International Astronomical Union , Volume 126: The Harlow-Shapley Symposium on Globular Cluster Systems in Galaxies , 1988 , pp. 555 - 556
Copyright
Copyright © Kluwer 1988 

References

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