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Relative Ages of Nine Inner Milky Way Globular Clusters from Proper Motion Cleaned Color-Magnitude Diagrams
Roger E. Cohen, Andrea Bellini, Luca Casagrande +3
Our picture of the age-metallicity relation for Milky Way globular clusters (MWGCs) is still highly incomplete, and the majority of MWGCs lack self-consistent age measurements. Her…
Reaching the oldest stars beyond the Local Group: ancient star formation in UGC 4483
Elena Sacchi, Alessandra Aloisi, Matteo Correnti +9
We present new WFC3/UVIS observations of UGC 4483, the closest example of a metal-poor blue compact dwarf galaxy, with a metallicity of and located at a…
The wide upper main sequence and main sequence turnoff of the ~ 800 Myr old star cluster NGC1831
Matteo Correnti, Paul Goudfrooij, Andrea Bellini +1
We present the analysis of the colour-magnitude diagram (CMD) morphology of the ~ 800 Myr old star cluster NGC1831 in the Large Magellanic Cloud, exploiting deep, high-resolution p…