Valentina D'Odorico

The rise of the C IV mass density at z (2009)

D'Odorico, Valentina, Calura, Francesco, Cristiani, Stefano, Viel, Matteo

The cosmic evolution of the metal content of the intergalactic medium puts stringent constraints on the properties of galactic outflows and on the nature of UV background. In this paper, we present a...

Cosmic dynamics in the era of Extremely Large Telescopes (2008)

Liske, Jochen, Grazian, Andrea, Vanzella, Eros, Dessauges, Miroslava, Viel, Matteo, Pasquini, Luca, ...

The redshifts of all cosmologically distant sources are expected to experience a small, systematic drift as a function of time due to the evolution of the Universe's expansion rate. A measurement of...

Cosmic dynamics in the era of Extremely Large Telescopes (2008)

Liske, Jochen, Grazian, Andrea, Vanzella, Eros, Dessauges, Miroslava, Viel, Matteo, Pasquini, Luca, ...

The redshifts of all cosmologically distant sources are expected to experience a small, systematic drift as a function of time due to the evolution of the Universe's expansion rate. A measurement of...

Cosmic dynamics in the era of Extremely Large Telescopes (2008)

Liske, Jochen, Grazian, Andrea, Vanzella, Eros, Dessauges, Miroslava, Viel, Matteo, Pasquini, Luca, ...

The redshifts of all cosmologically distant sources are expected to experience a small, systematic drift as a function of time due to the evolution of the Universe's expansion rate. A measurement of...

Cosmic dynamics in the era of Extremely Large Telescopes (2008)

Liske, Jochen, Grazian, Andrea, Vanzella, Eros, Dessauges, Miroslava, Viel, Matteo, Pasquini, Luca, ...

The redshifts of all cosmologically distant sources are expected to experience a small, systematic drift as a function of time due to the evolution of the Universe's expansion rate. A measurement of...

The contribution of UVES@VLT to the new era of QSO absorption line studies (2007)

D'Odorico, Valentina, Dessauges-Zavadsky, Miroslava

We briefly review the main results obtained in the field of QSO absorption line studies with the UVES high resolution spectrograph mounted on the Kueyen unit of the ESO Very Large Telescope (Paranal,...

CODEX/ESPRESSO: the era of precision spectroscopy (2007)

D'Odorico, Valentina, Team, For The CODEX/ESPRESSO

CODEX is a high resolution spectrograph for the European ELT. CODEX is conceived to reach the highest precision and stability, allowing the execution of programs spanning many years. Several...

A cold metal-poor cloud traced by a weak MgII absorption at z~0.45. First detection of SiI, CaI and FeI in a QSO absorber (2007)

D'Odorico, Valentina

We present the observations of a weak MgII absorption system detected at z~0.452 in the UVES high resolution spectrum of the QSO HE0001-2340. The weaker of the two MgII components forming the system...

The CODEX-ESPRESSO experiment: cosmic dynamics, fundamental physics, planets and much more (2007)

Cristiani, Stefano, Avila, Gerardo, Bonifacio, Piercarlo, Bouchy, Francois, Carswell, B., D'Odorico, Sandro D., ...

CODEX, a high-resolution, super-stable spectrograph to be fed by the E-ELT, the most powerful telescope ever conceived, will for the first time provide the possibility of directly measuring the...

The CODEX-ESPRESSO experiment: cosmic dynamics, fundamental physics, planets and much more (2007)

Cristiani, Stefano, Avila, Gerardo, Bonifacio, Piercarlo, Bouchy, Francois, Carswell, B., D'Odorico, Sandro D., ...

CODEX, a high-resolution, super-stable spectrograph to be fed by the E-ELT, the most powerful telescope ever conceived, will for the first time provide the possibility of directly measuring the...

CODEX : measuring the expansion of the universe (2005)

Pasquini, Luca, Cristiani, Stefano, Dekker, Hans, Haehnelt, Martin, Molaro, Paolo, Pepe, Francesco, ...

CODEX, a high-resolution, super-stable spectrograph to be fed by OWL, the most powerful telescope ever conceived, will for the first time provide the possibility of directly measuring the change of...

CODEX : measuring the expansion of the universe (2005)

Pasquini, Luca, Cristiani, Stefano, Dekker, Hans, Haehnelt, Martin, Molaro, Paolo, Pepe, Francesco, ...

CODEX, a high-resolution, super-stable spectrograph to be fed by OWL, the most powerful telescope ever conceived, will for the first time provide the possibility of directly measuring the change of...

CODEX : measuring the expansion of the universe (2005)

Pasquini, Luca, Cristiani, Stefano, Dekker, Hans, Haehnelt, Martin, Molaro, Paolo, Pepe, Francesco, ...

CODEX, a high-resolution, super-stable spectrograph to be fed by OWL, the most powerful telescope ever conceived, will for the first time provide the possibility of directly measuring the change of...

Chemical abundances in quasar host galaxies and environments from narrow absorption line systems (2004)

D'Odorico, Valentina, Cristiani, Stefano, Romano, Donatella, Granato, Gian Luigi, Danese, E Luigi

We determined C, N and alpha-element relative abundances in the gas surrounding six QSOs at an average redshift of < z > ~ 2.4, by studying six narrow associated absorption systems in UVES...

Hints of star fomation at z>6: the chemical abundances of the DLA system in the QSO BRI 1202-0725 (z_abs = 4.383) (2003)

D'Odorico, Valentina, Molaro, Paolo

The Damped Ly-alpha (DLA) absorber at redshift z_abs=4.383 observed toward QSO BRI 1202-0725 is studied by means of high resolution (FWHM ~ 7 km/s) VLT-UVES spectra. We refine a previously determined...

Ar I as a tracer of ionization evolution (2003)

Vladilo, Giovanni, Centurion, Miriam, D'Odorico, Valentina, Peroux, Celine

We present a study of Ar abundances in 15 damped Ly alpha systems (DLAs) in the redshift interval from 2.3 to 3.4. The sample includes 4 new UVES/VLT measurements of Ar I column densities. The...

High matter density peaks from UVES observations of QSO pairs: correlation properties and chemical abundances (2002)

D'Odorico, Valentina, Petitjean, Patrick, Cristiani, Stefano

We study the transverse clustering properties of high matter density peaks as traced by high column density absorption systems (either Lyman limit systems characterized by N(HI)> 2 x 10^{17} cm^{-2}...

Coincidences of high density peaks in UVES spectra of QSO pairs (2001)

D'Odorico, Valentina, Petitjean, Patrick, Cristiani, Stefano

We present preliminary results of an investigation of the clustering properties of high matter density peaks between redshift ~2 and ~3, as traced by Lyman limit and Damped Ly-alpha systems in...

Inhomogeneous metal enrichment at z \sim 1.9: the Lyman limit systems in the spectrum of the HDF-S quasar (2001)

D'Odorico, Valentina, Petitjean, Patrick

We present a detailed analysis of three metal absorption systems observed in the spectrum of the HDF-South quasar J2233-606 (z_em = 2.238), taking advantage of new VLT-UVES high resolution data...

The Absorption Spectrum of the QSO PKS 2126-158 (z_em = 3.27) and the Clustering Properties of Metal Systems (1997)

D'Odorico, Valentina

We report the detection of a significant clustering signal on scales $\Delta v < 300$ km/s, for a sample of 71 C IV absorbers. This result confirms previous findings and, together with data at lower...