QSO Selection and Photometric Redshifts with Neural Networks (2009)
Yeche, Ch., Petitjean, P., Rich, J., Aubourg, E., Busca, N., Hamilton, J. -Ch., ...
Baryonic Acoustic Oscillations (BAO) and their effects on the matter power spectrum can be studied by using the Lyman-alpha absorption signature of the matter density field along quasar (QSO) lines...
Boisse, P., Rollinde, E., Hily-Blant, P., Pety, J., Federman, S. R., Sheffer, Y., ...
The runaway star HD34078, initially selected to investigate small scale structure in a foreground diffuse cloud has been shown to be surrounded by highly excited H2. We first search for an...
Cosmological perspectives on very metal-poor stars (2008)
Rollinde, E., Vangioni, E., Maurin, D., Olive, K. A., Daigne, F., Vincent, F.
Very metal-poor stars, observed in the ESO large program (ESO-LP, sample of Cayrel et al., 2004), are analyzed in a cosmological context, with a special emphasis on carbon-enhanced metal-poor stars...
Recovering the topology of the IGM at z~2 (2008)
Caucci, S., Colombi, S., Pichon, C., Rollinde, E., Petitjean, P., Sousbie, T.
We investigate how well the 3D density field of neutral hydrogen in the Intergalactic Medium (IGM) can be reconstructed using the Lyman-alpha absorptions observed along lines of sight to quasars...
Evidence for overdensity around zem > 4 quasars from the proximity effect (2007)
Guimarães, R., Petitjean, P., Rollinde, E., De Carvalho, R. R., Djorgovski, S. G., Srianand, R., ...
We study the density field around zem > 4 quasars using high-quality medium spectral resolution Echelle Spectrograph and Imager–Keck spectra ( R∼ 4300 , signal-to-noise ratio (S/N) > 25) of 45...
Coppolani, F., Petitjean, P., Stoehr, F., Rollinde, E., Pichon, C., Colombi, S., ...
We present the transverse flux correlation function of the Lyman-alpha forest in quasar absorption spectra at z~2.1 from VLT-FORS and VLT-UVES observations of a total of 32 pairs of quasars; 26 pairs...
Boisse, P., Petit, F. Le, Rollinde, E., Roueff, E., Forets, G. Pineau Des, Anderson, B. G., ...
To investigate the presence of small scale structure in the spatial distribution of H2 molecules we have undertaken repeated FUSE UV observations of the runaway O9.5V star, HD34078. In this paper we...
The correlation of the Lyman-alpha forest and metals in close pairs of hight-redshift quasars (2005)
Coppolani, F., Petitjean, P., Stoehr, F., Rollinde, E., Pichon, C., Colombi, S., ...
We derive the transverse flux correlation function in the Lyman-alpha forest at z~2.1 from VLT-FORS observations of a total of 32 pairs of quasars. The shape and correlation length of the transverse...
The density structure around quasars from optical depth statistics (2005)
Rollinde, E., Srianand, R., Theuns, T., Petitjean, P., Chand, H.
We present a method for studying the proximity effect and the density structure around redshift z=2-3 quasars. It is based on the probability distribution of Lyman-alpha pixel optical depths and its...
Petit, F.Le, Rollinde, E., Roueff, E., Des Forêts, G.Pineau, Gry, C., ...
To investigate the presence of small scale structure in the spatial distribution of H2 molecules we have undertaken repeated FUSE UV observations of the runaway O9.5V star, HD 34078. In this paper we...
Boisse, P., Petit, F. Le, Rollinde, E., Roueff, E., Forets, G. Pineau Des, Anderson, B. G., ...
To investigate the presence of small scale structure in the spatial distribution of H2 molecules we have undertaken repeated FUSE UV observations of the runaway O9.5V star, HD34078. In this paper we...
Boisse, P., Petit, F. Le, Rollinde, E., Roueff, E., Forets, G. Pineau Des, Anderson, B. G., ...
To investigate the presence of small scale structure in the spatial distribution of H2 molecules we have undertaken repeated FUSE UV observations of the runaway O9.5V star, HD34078. In this paper we...
Boisse, P., Petit, F. Le, Rollinde, E., Roueff, E., Forets, G. Pineau Des, Anderson, B. G., ...
To investigate the presence of small scale structure in the spatial distribution of H2 molecules we have undertaken repeated FUSE UV observations of the runaway O9.5V star, HD34078. In this paper we...
Rollinde, E., Petitjean, P., Pichon, C., Colombi, S., Aracil, B., D'Odorico, V., ...
We study the clustering of matter in the intergalactic medium from the Lyman-alpha forests seen in the spectra of pairs or groups of z ~ 2 quasars observed with FORS2 and UVES at the VLT-UT2 Kueyen...
Small scale structure in molecular gas from multi-epoch observations of HD 34078 (2003)
Rollinde, E., Boisse, P., Federman, S. R., Pan, K.
We present spectroscopic observations of the runaway reddened star HD 34078 acquired during the last three years at Observatoire de Haute Provence and McDonald Observatory as well as other spectra...
The Lyalpha Forest Around High Redshift Galaxies (2002)
Bruscoli, M., Ferrara, A., Marri, S., Schneider, R., Maselli, A., Rollinde, E., ...
Motivated by the relative lack of neutral hydrogen around Lyman Break Galaxies deduced from recent observations, we investigate the properties of the Lyalpha forest around high redshift galaxies. The...
Rollinde, E., Petitjean, P., Pichon, C.
We study the physical properties of the Lyman-alpha forest by applying the inversion method described by Pichon et al. (2001) to the high resolution and high S/N ratio spectrum of the z_em=2.40...
Inversion of the Lyman-$\alpha$ forest: 3D investigation of the intergalactic medium (2001)
Pichon, C., Vergely, J. L., Rollinde, E., Colombi, S., Petitjean, P.
We discuss the implementation of Bayesian inversion methods in order to recover the properties of the intergalactic medium from observations of the neutral hydrogen Lyman-$\alpha$ absorptions...