53 citations · 318 across the 25 of their papers we have counts for
11 papers · 1 filter
Constraining the Synthesis of the Lightest p Nucleus 74Se
A. Tsantiri, A. Spyrou, E. C. Good +42
We provide the first experimental cross section of the reaction to constrain one of the main destruction mechanisms of the p nucleus $^{74}\text…
Unveiling the nature of HE 0107-5240
E. Caffau, M. Steffen, P. Molaro +27
The vast majority of the most iron-poor stars in the Galaxy exhibit a strong carbon enhancement, with C/H ratios only about two orders of magnitude below solar. This unusual chemic…
Production of radioactive Na in core-collapse supernovae: the Ne-E(L) component in presolar grains and its possible consequences on supernova observations
M. Pignatari, S. Amari, P. Hoppe +8
Presolar graphite grains carry the isotopic signatures of their parent stars. A significant fraction of presolar graphites shows isotopic abundance anomalies relative to solar for…
Explodability matters: how realistic neutrino-driven explosions change explosive nucleosynthesis yields
Luca Boccioli, Lorenzo Roberti
Explosive nucleosynthesis is affected by many uncertainties, particularly regarding assumptions and prescriptions adopted during the evolution of the star. Moreover, simple explosi…
Impact of the latest 22Ne+α reaction rates on nucleosynthesis in massive stars and galactic chemical evolution
Emma Kotar, Shuya Ota, Allyson Dewey +3
In massive stars (initial mass of > 9 solar masses), the weak s (slow neutron capture) process produces elements between Fe and Zr, enriching the Galaxy with these elements through…
The SPAr burning: proton captures powering carbon-oxygen shell mergers in massive stars
L. Roberti, M. Pignatari
Carbon-oxygen (C-O) shell mergers in massive stars play a crucial role in both nucleosynthesis and the final stages of stellar evolution. These convective-reactive events significa…
The role of rotation on the yields of the two γ-ray emitters 26Al and 60Fe ejected by massive stars
Agnese Falla, Lorenzo Roberti, Marco Limongi +1
We show that the observed 60Fe/26Al flux ratio provided by the SPectrometer on INTEGRAL satellite (0.24 +- 0.04) can be reproduced only if rotation is taken into account in the com…
The chemical yields of stars in the range 9-15 Msun
Marco Limongi, Lorenzo Roberti, Agnese Falla +2
In Limongi et al. (2024) we presented and discussed the main evolutionary properties and final fate of stars in the mass range 7-15 Msun. The evolutions of those models were comput…
Stellar population modelling of neutron stars and black holes: spatially-resolved graveyards in MaNGA/SDSS-IV galaxies
Claudia Maraston, Marco Limongi, Justus Neumann +4
We update our stellar population models for the time evolution of the number and mass of massive remnants - neutron stars and black holes - with a new initial mass-remnant mass rel…
The Occurrence and Impact of Carbon-Oxygen Shell Mergers in Massive Stars
L. Roberti, M. Pignatari, H. E. Brinkman +6
In their final stages before undergoing a core-collapse supernova, massive stars may experience mergers between internal shells where carbon (C) and oxygen (O) are consumed as fuel…
Explaining the ratio in the Galactic halo: the contribution from shell mergers in primordial massive stars
F. Rizzuti, G. Cescutti, P. Molaro +5
Recent campaigns of observations have provided new measurements of the carbon isotopes in the most metal-poor stars of the Galaxy. These stars are so metal-poor that they could onl…