We have derived ages and metallicities from co-added spectra of 131 globular clusters (GCs) associated with the giant Virgo elliptical NGC 4472. From their metal-line indices, we find that our sample of GCs span a metallicity range of approximately -1.6 <= [Fe/H] <= 0 dex. The SSP models of Worthey (1994; W94) predict that the metal-poor population of GCs has an age of 14.5 ± 4 Gyr and that the metal-rich population is 13.8 ± 6 Gyr old, whilst the models of Kurth, Fritze-v. Alvensleben & Fricke (1999; KFF99) predict ages of 6.0 ± 2 and 8.0 ± 5 respectively. We conclude that, within the uncertainties, the GCs are old and coeval, and that the bimodality seen in the broadband colours primarily reflects metallicity and not age differences
Studying the chemical compositions and color-magnitude diagrams of globular clusters in the nearby l...
Bimodality is a common feature of globular cluster (GC) color distributions in galaxies. Although it...
New age determinations of the Galactic disk globular clusters 47 Tuc, M71 and NGC 6352 have been per...
We present a study of the metallicity and age of the globular clusters system of M49 (NGC 4472), the...
High signal-to-noise, low-resolution spectra have been obtained for 22 globular clusters (GCs) in NG...
We use recently derived ages for 61 Milky Way (MW) globular clusters (GCs) to show that their age-me...
High signal-to-noise ratio, low-resolution spectra have been obtained for 22 globular clusters (GCs)...
Context. The formation and evolution of disk galaxies are long standing questions in astronomy. Unde...
We present a study of the metallicity and age of the globular clusters system of M49 (NGC 4472), the...
Globular clusters (GCs) are gravitationally bound collections of millions of stars formed in a very ...
We present new spectroscopic observations of a sample of globular clusters (GCs) in the Virgo Cluste...
Globular clusters trace the formation history of the spheroidal components of our Galaxy and other g...
Globular cluster systems (GCSs) of most early-type galaxies feature two peaks in their optical colou...
Globular cluster systems (GCSs) of most early-type galaxies feature two peaks in their optical colou...
We present near-infrared photometry of the globular cluster systems of the early-type galaxies NGC 4...
Studying the chemical compositions and color-magnitude diagrams of globular clusters in the nearby l...
Bimodality is a common feature of globular cluster (GC) color distributions in galaxies. Although it...
New age determinations of the Galactic disk globular clusters 47 Tuc, M71 and NGC 6352 have been per...
We present a study of the metallicity and age of the globular clusters system of M49 (NGC 4472), the...
High signal-to-noise, low-resolution spectra have been obtained for 22 globular clusters (GCs) in NG...
We use recently derived ages for 61 Milky Way (MW) globular clusters (GCs) to show that their age-me...
High signal-to-noise ratio, low-resolution spectra have been obtained for 22 globular clusters (GCs)...
Context. The formation and evolution of disk galaxies are long standing questions in astronomy. Unde...
We present a study of the metallicity and age of the globular clusters system of M49 (NGC 4472), the...
Globular clusters (GCs) are gravitationally bound collections of millions of stars formed in a very ...
We present new spectroscopic observations of a sample of globular clusters (GCs) in the Virgo Cluste...
Globular clusters trace the formation history of the spheroidal components of our Galaxy and other g...
Globular cluster systems (GCSs) of most early-type galaxies feature two peaks in their optical colou...
Globular cluster systems (GCSs) of most early-type galaxies feature two peaks in their optical colou...
We present near-infrared photometry of the globular cluster systems of the early-type galaxies NGC 4...
Studying the chemical compositions and color-magnitude diagrams of globular clusters in the nearby l...
Bimodality is a common feature of globular cluster (GC) color distributions in galaxies. Although it...
New age determinations of the Galactic disk globular clusters 47 Tuc, M71 and NGC 6352 have been per...