Open AccessIntegrated‐light VRI imaging photometry of globular clusters in the Magellanic Clouds
Author(s) -
Goudfrooij Paul,
Gilmore Diane,
KisslerPatig Markus,
Maraston Claudia
Publication year - 2006
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2006.10314.x
Subject(s) - physics , globular cluster , photometry (optics) , astrophysics , metallicity , red giant branch , stellar population , astronomy , asymptotic giant branch , large magellanic cloud , stars , horizontal branch , star cluster , star formation
We present accurate integrated‐light photometry in Johnson/Cousins V , R and I for a sample of 28 globular clusters in the Magellanic Clouds. The majority of the clusters in our sample have reliable age and metallicity estimates available in the literature. The sample encompasses ages between 50 Myr and 7 Gyr, and metallicities ([Fe/H]) between −1.5 and 0.0 dex. The sample is dominated by clusters of ages between roughly 0.5 and 2 Gyr, an age range during which the bolometric luminosity of simple stellar populations is dominated by evolved red giant branch stars and thermally pulsing asymptotic giant branch (TP‐AGB) stars whose theoretical colours are rather uncertain. The VRI colours presented in this paper have been used to calibrate stellar population synthesis model predictions.