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The First Empirical Mass Loss Law for Population II Giants
Livia Origlia, Robert T. Rood, Sara Fabbri +3
Using the Spitzer IRAC camera we have obtained mid-IR photometry of the red giant branch stars in the Galactic globular cluster 47 Tuc. About 100 stars show an excess of mid-infrar…
The fraction of binary systems in the core of thirteen low-density Galactic globular clusters
A. Sollima, G. Beccari, F. R. Ferraro +2
We used deep observations collected with ACS@HST to derive the fraction of binary systems in a sample of thirteen low-density Galactic globular clusters. By analysing the color dis…
The globular cluster NGC 1978 in the Large Magellanic Cloud
Alessio Mucciarelli, Francesco R. Ferraro, Livia Origlia +1
We have used deep high-resolution Hubble Space Telescope ACS observations to image the cluster NGC 1978 in the Large Magellanic Cloud. This high-quality photometric data set allowe…