Observations from a sample of six regions of star formation in the 244 GHz, J = 5-4 rotational transition of CS, together with previous results for lower...
Deep CCD photometry of stars in the globular cluster M3
CCD photometry of faint stars in the globular cluster M3 is presented. The observations reach down to V equal to about 23 mag, with a sample of approximately...
Derivation of star formation histories through deep color-magnitude diagrams: the dependency on stellar evolution models.
We review the state of the art of the derivation of star formation histories from color-magnitude diagrams reaching the oldest main sequence turnoffs. From the...
Detection of narrow C 4 and SI 4 absorption features in spectra of stars within 200 PC F the Sun
Detection of narrow (δλ < 0.5 Å) absorption features in C IV at λλ1548 and 1550 have been made in the spectra of 4 late B dwarfs within 200 pc of the sun; the...
Distances to galaxies from the brightest stars in the Universe
Measuring distances to galaxies and determining their chemical compositions are two fundamental activities in modern extragalactic astronomy, in that they help...
DR. SANTI CASSISI (INAF, Osservatorio Astronomico d'Abruzzo, Italy)
Dr. Santi Cassisi is a world-recognized expert in stellar evolution, and main creator and maintainer of the widely used BaSTI stellar evolution library. Stellar...
Evolution of supernova remnants inside preexisting wind-driven cavities
The evolution of supernova remnants in preexisting cavities is examined by means of 1D and 2D numerical studies of the phenomenon and the fragmentation of...
Evolutionary versus dynamical time scales for the evolution of the central stars of planetary nebulae
The disagreement between evolutionary and dynamical time scales for the evolution of the central stars of planetary nebulae (CSPN) through the H-R diagram is...
Extreme nitrogen enrichment in the asymmetrical planetary nebulae M1-75
In the framework of the morphological survey of northern sky planetary nebulae, in progress at the IAC we investigate in detail those nebulae that show...