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The stellar to sub-stellar masses transition in 47 Tuc
C. Ventura, M. Tailo, P. Ventura +4
Context: The study of the Globular Cluster 47 Tuc offers the opportunity to shed new light on the debated issue on the presence of multiple populations in Globular Clusters, as rec…
Exploring the ultra-faint dwarf Bootes I using JWST and HST: Metallicity distribution and binaries
F. Muratore, M. V. Legnardi, A. P. Milone +8
Ultra-faint dwarf galaxies (UFDs) are among the oldest and most metal-poor stellar systems in the Universe. Their metallicity distribution encodes the fossil record of the earliest…
Tracing ωCentauri's origins: Spatial and chemical signatures of its formation history
E. Dondoglio, A. P. Milone, A. F. Marino +8
ω}Centauri (ωCen) is the most enigmatic Galactic globular cluster (GC), with unmatched chemical complexity. We combine photometric and spectroscopic catalogs to identify its distin…
The Small Magellanic Cloud through the lens of the James Webb Space Telescope : binaries and mass function within the galaxy outskirts
M. V. Legnardi, F. Muratore, A. P. Milone +8
The stellar initial mass function (IMF) and the fraction of binary systems are fundamental ingredients that govern the formation and evolution of galaxies. Whether the IMF is unive…
Dating N loud AGNs at high redshift: GS3073 as a snapshot of wCen like evolution of a nuclear star cluster
F. D'Antona, P. Ventura, A. F. Marino +8
In this paper we address two major questions raised by recent James Webb Space Telescope observations of the young Universe, namely: 1) what are the seed initial masses, and how ra…
Hunting for UVdim stars in Galactic Open clusters. Clues from ultraviolet photometry
G. Cordoni, A. P. Milone, L. Casagrande +7
Split main-sequences (MSs) and extended main-sequence turn-offs (eMSTOs) have been observed in nearly all Magellanic Clouds clusters younger than 2 Gyr. More recently, Hubble Space…