4 citations · 4 across the 2 of their papers we have counts for
9 papers
Search for alpha variation in UVES spectra: Analysis of C IV and Si IV doublets towards QSO 1101-264
A. F. Martinez Fiorenzano, G. Vladilo, P. Bonifacio
Motivated by previous studies of QSO spectra that reported a variation of the fine structure constant alpha, a search for C IV and Si IV doublets was conducted in the absorption sp…
A common trend in the chemical evolution of Local Group dwarf spheroidals and Damped Ly-alpha systems
G. Vladilo, L. Sbordone, P. Bonifacio
We compare chemical abundances of Local Group dwarf spheroidals, obtained from recent UVES/VLT observations, and of high redshift Damped Lyman alpha systems (DLAs), corrected for d…
A scaling law of interstellar depletions as a tool for abundance studies of Damped Ly alpha systems
G. Vladilo
An analytical expression is presented that allows dust depletions to be estimated in different types of interstellar environments, including Damped Ly alpha systems. The expression…
The impact of dust and ionization effects on abundance measurements of Damped Ly alpha systems
Giovanni Vladilo
Studies of elemental abundances are a fundamental tool for unveiling the nature of the high-redshift (proto-)galaxies associated to Damped Ly alpha systems (DLAs). The present cont…
Low deuterium abundance in the zabs=3.514 absorber towards APM 08279+5255
Paolo Molaro, Piercarlo Bonifacio, Miriam Centurion +1
A high-resolution, high signal-to-noise HIRES-Keck spectrum of APM 08279+5255 reveals a feature in the HI Ly alpha profile of the zabs=3.514 absorber at the expected position of th…
Nature and evolution of Damped Lyman alpha systems
Giovanni Vladilo
The main properties of Damped Lyman alpha (DLA) systems are briefly reviewed with the aim of studying the nature and evolution of the galaxies associated with this class of QSO abs…