5 papers
Quiet Sun Magnetic Field Measurements Based on Lines with Hyperfine Structure
J. Sanchez Almeida, B. Viticchie, E. Landi Degl'Innocenti +1
The Zeeman pattern of MnI lines is sensitive to hyperfine structure (HFS) and, they respond to hG magnetic field strengths differently from the lines used in solar magnetometry. Th…
CoRoT and asteroseismology. Preparatory work and simultaneous ground-based monitoring
Ennio Poretti, Monica Rainer, Katrien Uytterhoeven +3
The successful launch of the CoRoT (COnvection, ROtation and planetary Transits) satellite opens a new era in asteroseismology. The space photometry is complemented by high-resolut…
ATLAS vs. NextGen model atmospheres: a combined analysis of synthetic spectral energy distributions
E. Bertone, A. Buzzoni, M. Chavez +1
We carried out a critical appraisal of the two theoretical models, Kurucz' ATLAS9 and PHOENIX/NextGen, for stellar atmosphere synthesis. Our tests relied on the theoretical fit of…
Modelling the nova rate in galaxies
Francesca Matteucci, Agostino Renda, Antonio Pipino +1
We compute theoretical nova rates as well as type Ia SN rates in galaxies of different morphological type (Milky Way, ellipticals and irregulars) by means of detailed chemical evol…
New optical and near-infrared Surface Brightness Fluctuations models. A primary distance indicator ranging from Globular Clusters to distant galaxies?
M. Cantiello, G. Raimondo, E. Brocato +1
We present new theoretical models for Surface Brightness Fluctuations (SBF) both for optical and near-infrared bands in standard ground-based and Hubble Space Telescope filter syst…