Pierre Ocvirk

Cosmic star-formation history from a non-parametric inversion of infrared galaxy counts (2009)

Borgne, Damien Le, Elbaz, David, Ocvirk, Pierre, Pichon, Christophe

[Abridged] This paper aims at providing new conservative constraints to the cosmic star-formation history from the empirical modeling of mid- and far-infrared data. We perform a non-parametric...

Analysis of stellar populations with large empirical libraries at high spectral resolution (2008)

Prugniel, Philippe, Koleva, Mina, Ocvirk, Pierre, Le Borgne, Damien, Soubiran, C.

The stellar population models dramatically progressed with the arrival of large and complete libraries, ELODIE, CFLIB (=Indo-US) and MILES at a relatively high resolution. We show that the quality of...

Analysis of stellar populations with large empirical libraries at high spectral resolution (2008)

Prugniel, Philippe, Koleva, Mina, Ocvirk, Pierre, Le Borgne, Damien, Soubiran, C.

The stellar population models dramatically progressed with the arrival of large and complete libraries, ELODIE, CFLIB (=Indo-US) and MILES at a relatively high resolution. We show that the quality of...

Comparison of different spectral population models (2007)

Koleva, Mina, Prugniel, Philippe, Ocvirk, Pierre, Borgne, Damien Le, Chilingarian, Igor, Soubiran, Caroline

We have compared simple stellar populations (SSPs) generated with different population synthesis tools: BC03, Vazdekis and Pegase.HR and different stellar libraries: ELODIE3.1, SteLib and MILES. We...

Analysis of stellar populations with large empirical libraries at high spectral resolution (2007)

Prugniel, Philippe, Koleva, Mina, Ocvirk, Pierre, Borgne, Damien Le, Soubiran, Caroline

The stellar population models dramatically progressed with the arrival of large and complete libraries, ELODIE, CFLIB (=Indo-US) and MILES at a relatively high resolution. We show that the quality of...

Age and metallicity of Galactic clusters from full spectrum fitting (2007)

Koleva, Mina, Prugniel, Philippe, Ocvirk, Pierre, Borgne, Damien Le

We are using full spectrum fitting to determine the ages and metallicities of Galactic clusters (M67 and globular clusters). We find that the method is very accurate to measure the metallicity. Blue...

Stellar population gradients in early-type galaxies (2007)

Sanchez-Blazquez, Patricia, Forbes, Duncan A., Strader, Jay, Ocvirk, Pierre, Brodie, Jean P., Proctor, Robert N.

Long-slit spectra have been obtained with the Keck telescope for a sample of 11 early-type galaxies covering a range in luminosity. Rotation velocity and velocity dispersions, together with 20 Lick...

Stellar population gradients in early-type galaxies (2007)

Sanchez-Blazquez, Patricia, Forbes, Duncan A., Strader, Jay, Ocvirk, Pierre, Brodie, Jean P., Proctor, Robert N.

Long-slit spectra have been obtained with the Keck telescope for a sample of 11 early-type galaxies covering a range in luminosity. Rotation velocity and velocity dispersions, together with 20 Lick...

Stellar population gradients in early-type galaxies (2007)

Sanchez-Blazquez, Patricia, Forbes, Duncan A., Strader, Jay, Ocvirk, Pierre, Brodie, Jean P., Proctor, Robert N.

Long-slit spectra have been obtained with the Keck telescope for a sample of 11 early-type galaxies covering a range in luminosity. Rotation velocity and velocity dispersions, together with 20 Lick...

Stellar population gradients in early-type galaxies (2007)

Sanchez-Blazquez, Patricia, Forbes, Duncan A., Strader, Jay, Ocvirk, Pierre, Brodie, Jean P., Proctor, Robert N.

Long-slit spectra have been obtained with the Keck telescope for a sample of 11 early-type galaxies covering a range in luminosity. Rotation velocity and velocity dispersions, together with 20 Lick...

Modelling and interpreting optical spectra of galaxies at R=10000 (2005)

Lancon, Ariane, Ocvirk, Pierre, Borgne, Damien Le, Pichon, Christophe, Prugniel, Philippe, Fioc, Michel, ...

One way to extract more information from the integrated light of galaxies is to improve the spectral resolution at which observations and analysis are carried out. The population synthesis code...