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Chemical analysis of carbon stars in the Local Group: I. The Small Magellanic Cloud and the Sagittarius dwarf spheroidal galaxy
P. De Laverny, C. Abia, I. Dominguez +5
We present the first results of our ongoing chemical study of carbon stars in the Local Group of galaxies. We used spectra obtained with UVES at the 8.2 m Kueyen-VLT telescope and…
Metallicities, relative ages and kinematics of stellar populations in omega Centauri
A. Sollima, E. Pancino, F. R. Ferraro +3
We present results of an extensive spectroscopic survey of Subgiant stars in the stellar system omega Centauri. Using infrared CaII triplet lines, we derived metallicities and radi…
S-factor of 14N(p,gamma)15O at astrophysical energies
G. Imbriani, H. Costantini, A. Formicola +31
The astrophysical S-factor of 14N(p,gamma)15O has been measured for effective center-of-mass energies between E_eff = 119 and 367 keV at the LUNA facility using TiN solid targets a…
Feasibility of low energy radiative capture experiments at the LUNA underground accelerator facility
D. Bemmerer, F. Confortola, A. Lemut +29
The LUNA (Laboratory Underground for Nuclear Astrophysics) facility has been designed to study nuclear reactions of astrophysical interest. It is located deep underground in the Gr…
s Process in low-mass Asymptotic Giant Branch Stars
O. Straniero, R. Gallino, S. Cristallo
The main component of the s process is produced by low mass stars (between 1.5 and 3 Mo), when they climb for the second time the red giant branch and experience a series of He she…