1.4k citations · 25.8k across the 323 of their papers we have counts for
9 papers · 2 filters
Petersen diagram for RRd stars in the Magellanic Clouds
B. L. Popielski, W. A. Dziembowski, S. Cassisi
RRd stars from the Magellanic Clouds form a well-defined band in the Petersen diagram. We explain this observed band with our evolutionary and pulsation calculations with assumed m…
Antlia: an outskirt Local Group Galaxy
Marco Castellani, Giuseppe Bono, Santi Cassisi +2
Deep (I,V-I) and (I,B-I) color-magnitude diagrams (CMDs) of the Antlia dwarf galaxy, based on Science Verification (SV) data collected with the FORS I camera on the ESO Very Large…
The anomalous Galactic globular cluster NGC 2808
L. R. Bedin, G. Piotto, M. Zoccali +4
We present UBVI photometry for about 60,000 stars in a region of 44'x33' centered on the Galactic globular cluster (GGC) NGC 2808. The central region has been mapped with the HST W…
Intermediate-mass star models with different helium and metal contents
G. Bono, F. Caputo, S. Cassisi +3
We present a comprehensive theoretical investigation of the evolutionary properties of intermediate-mass stars. The evolutionary sequences were computed from the Zero Age Main Sequ…
The role of NCO reaction chain on the He ignition in degenerate stellar structures
L. Piersanti, S. Cassisi, A. Tornambe'
The role played by NCO reaction in the onset of the He flash in the He core of a RGB star and in low mass CO WDs accreting H/He rich matter is investigated.
Hydrogen-Accreting Carbon-Oxygen White Dwarfs of Low Mass: Thermal and Chemical Behavior of Burning Shells
L. Piersanti, S. Cassisi, I. Iben +1
Numerical experiments have been performed to investigate the thermal behavior of a cooled down white dwarf of initial mass $M_{\rm WD} = 0.516 M_{\sun}$ which accretes hydrogen-ric…
On the helium content of Galactic globular clusters via the R parameter
M. Zoccali, S. Cassisi, G. Bono +3
We estimate the empirical R parameter in 26 Galactic Globular Clusters covering a wide metallicity range, imaged by WFPC2 on board the HST. The improved spatial resolution permits…
Galactic Globular Clusters as a test for Very Low-Mass stellar models
S. Cassisi, V. Castellani, P. Ciarcelluti +2
We make use of the Next Generation model atmospheres by Allard et al. (1997) and Hauschildt, Allard & Baron (1999) to compute theoretical models for low and very low-mass stars for…
Stellar evolution and large extra dimensions
S. Cassisi, V. Castellani, S. Degl'Innocenti G. Fiorentini +1
We discuss in detail the information on large extra dimensions which can be derived in the framework of stellar evolution theory and observation. The main effect of large extra dim…