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The pollution from massive AGB stars favoured by strong hot bottom burning
Paolo Ventura, Francesca D'Antona
Stars of intermediate mass (~4-8Msun) evolve to the stage of white dwarfs through the asymptotic giant branch (AGB) stage: stationary hydrogen shell burning and helium thermal puls…
Noble gases Neon and argon: a role for the chemical patterns of multiple populations in globular clusters?
P. Ventura, F. D'Antona, M. Tailo +3
We focus on the sodium destruction in models reaching the high hot bottom burning temperatures needed to efficiently cycle oxygen to nitrogen in AGB models at the nominal [Fe/H] of…
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…
Mass loss along the red giant branch in 46 Globular Clusters and their multiple populations
M. Tailo, A. P. Milone, E. P. Lagioia +7
The location of Galactic Globular Clusters' (GC) stars on the horizontal branch (HB) should mainly depend on GC metallicity, the "first parameter", but it is actually the result of…
PLATO as it is: a legacy mission for Galactic archaeology
A. Miglio, C. Chiappini, B. Mosser +102
Deciphering the assembly history of the Milky Way is a formidable task, which becomes possible only if one can produce high-resolution chrono-chemo-kinematical maps of the Galaxy.…
The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters -- XI. The horizontal branch in NGC\,6388 and NGC\,6441
M. Tailo, F. D'Antona, A. P. Milone +12
The Hubble Space Telescope UV Legacy survey of Galactic Globular Clusters (GC) is characterising many different aspects of their multiple stellar populations. The "Grundahl-jump" (…
An HST/WFC3 view of stellar populations on the Horizontal Branch of NGC 2419
M. Di Criscienzo, M. Tailo, A. P. Milone +4
We use images acquired with the Hubble Space Telescope Wide Field Camera 3 and new models to probe the Horizontal Branch (HB) population of the We use images acquired with the Hubb…
Adiabatic solar-like oscillations in red giant stars
J. Montalban, A. Miglio, A. Noels +3
Since the detection of non-radial solar-like oscillation modes in red giants with the CoRoT satellite, the interest in the asteroseismic properties of red giants and the link with…
CoRoT\,102699796, the first metal-poor Herbig Ae pulsator: a hybrid Sct- Dor variable?
V. Ripepi, F. Cusano, M. Di Criscienzo +7
We present the analysis of the time series observations of CoRoT\,102699796 obtained by the CoRoT satellite that show the presence of five independent oscillation frequencies in th…
NGC 2419: a large and extreme second generation in a currently undisturbed cluster
M. Di Criscienzo, F. D'Antona, A. P. Milone +6
We analyse complementary HST and SUBARU data for the globular cluster NGC 2419. We make a detailed analysis of the horizontal branch (HB), that appears composed by two main groups…
The helium spread in the Globular cluster 47 Tuc
M. Di Criscienzo, P. Ventura, F. D' Antona +2
Spectroscopy has shown the presence of the CN band dicothomy and the Na-O anticorrelations for 50--70% of the investigated samples in the cluster 47 Tuc, otherwise considered a "no…
2D solar modeling
P. Ventura, V. Penza, L. Li +3
Understanding the reasons of the cyclic variation of the total solar irradiance is one of the most challenging targets of modern astrophysics. These studies prove to be essential a…
The C+N+O abundances and the splitting of the subgiant branch in the Globular Cluster NGC 1851
P. Ventura, V. Caloi, F. D'Antona +3
Among the newly discovered features of multiple stellar populations in Globular Clusters, the cluster NGC 1851 harbours a double subgiant branch, that can be explained in terms of…