478 citations · 2.6k across the 58 of their papers we have counts for
10 papers · 1 filter
JWST imaging of the closest globular clusters -- IV. Chemistry, luminosity, and mass functions of the lowest-mass members in the NIRISS parallel fields
M. Libralato, R. Gerasimov, L. Bedin +9
We present observations of the two closest globular clusters, NGC 6121 and NGC 6397, taken with the NIRISS detector of JWST. The combination of our new JWST data with archival Hubb…
The HST Large Programme on Omega Centauri -- VII. The white dwarf cooling sequence
M. Scalco, M. Salaris, L. Bedin +9
We present a study of the white dwarf (WD) cooling sequence (CS) in the globular cluster (GC) Omega Centauri, the primary goal of a dedicated Hubble Space Telescope (HST) programme…
The true nature of HE0057-5959, the most metal-poor Li-rich star
A. Mucciarelli, P. Bonifacio, L. Monaco +2
The Li-rich stars are a class of rare objects with A(Li) higher than that of other stars in the same evolutionary stage. Their origin is still debated and valuable routes are the C…
The dynamical age of the LMC globular cluster NGC 1835 using the "dynamical clock"
Camilla Giusti, Mario Cadelano, Francesco R. Ferraro +5
In the context of the study of the size-age relationship observed in star clusters in the Large Magellanic Cloud and the investigation of its origin, here we present the determinat…
JWST Imaging of the Closest Globular Clusters -- I. Possible Infrared Excess Among White Dwarfs in NGC 6397
L. R. Bedin, D. Nardiello, M. Salaris +9
We present James Webb Space Telescope observations of the globular cluster NGC 6397 and use them to extend to infrared wavelengths the characterization of the cluster's entire whit…
JWST Imaging of the Closest Globular Clusters -- III. Multiple Populations along the low-mass Main Sequence stars of NGC 6397
M. Scalco, M. Libralato, R. Gerasimov +9
Thanks to its exceptional near-infrared photometry, JWST can effectively contribute to the discovery, characterization, and understanding of multiple stellar populations in globula…
Benchmarking the effective temperature scale of red giant branch stellar models: the case of the metal-poor halo giant HD 122563
O. L. Creevey, S. Cassisi, F. Thévenin +2
There is plenty of evidence in the literature of significant discrepancies between the observations and models of metal-poor red giant branch stars, in particular regarding the eff…
The Large Programme on NGC6752 -- V. Differences in Luminosity and Mass Functions among Multiple Stellar Populations
M. Scalco, R. Gerasimov, L. R. Bedin +8
We exploit the astro-photometric dataset of the multi-epoch infrared parallel field of a Large Programme aimed at studying the faintest stars of t…
Discovery of an extended Horizontal Branch in the Large Magellanic Cloud globular cluster NGC1835
Camilla Giusti, Mario Cadelano, Francesco R. Ferraro +6
We present a high angular resolution multi-wavelength study of the massive globular cluster NGC 1835 in the Large Magellanic Cloud. Thanks to a combination of optical and near ultr…
OGLE GD-CEP-0516: the most metal-poor lithium-rich Galactic Cepheid
G. Catanzaro, V. Ripepi, M. Salaris +1
Classical Cepheids (DCEPs) are important astrophysical objects not only as standard candles for the determination of the cosmic distance ladder but also as a test-bed for the stell…