Browsing by Author "Ledoux, C."

Now showing items 1-7 of 7

    • HI column densities of z > 2 Swift gamma-ray bursts 
      Jakobsson, Páll; Fynbo, Johan P. U.; Ledoux, C.; Vreeswijk, Paul M.; Kann, D. A.; Hjorth, Jens; Priddey, R. S.; Tanvir, N. R.; Reichart, Daniel E.; Gorosabel, Jorge; Klose, Sylvio; Watson, Darach; Sollerman, J.; Fruchter, Andrew S.; Ugarte Postigo, A. de; Wiersema, K.; Bjornsson, G.; Chapman, R.; Thone, C. C.; Pedersen, K.; Jensen, Brian L. (EDP SCIENCES S A, 2006-12)
      Context. Before the launch of the Swift satellite, the majority of the gamma-ray burst (GRB) afterglows for which Lya was redshifted into the observable spectrum showed evidence for a damped Lya absorber. This small sample ...
    • Molecular gas budget and characterization of intermediate-mass star-forming galaxies at z approximate to 2-3 
      Solimano, M.; González López, J.; Barrientos, L. F.; Aravena, M.; López, S.; Tejos, N.; Sharon, K.; Dahle, H.; Bayliss, M.; Ledoux, C.; Rigby, J. R.; Gladders, M. (EDP Sciences, 2021)
      Star-forming galaxies (SFGs) with stellar masses below 10(10) M-circle dot make up the bulk of the galaxy population at z > 2. The properties of the cold gas in these galaxies can only be probed in very deep observations ...
    • An optical supernova associated with the X-ray flash XRF 060218 
      Pian, E.; Mazzali, Paolo; Masetti, N.; Ferrero, P.; Klose, Sylvio; Palazzi, E.; Ramírez Ruiz, Enrico; Woosley, S. E.; Kouveliotou, C.; Deng, J.; Filippenko, Alexei V.; Foley, Ryan J.; Fynbo, Johan P. U.; Kann, D. A.; Li, Weidong; Hjorth, Jens; Nomoto, K.; Patat, F.; Sauer, D. N.; Sollerman, J.; Vreeswijk, Paul M.; Guenther, E. W.; Levan, A. J.; O'Brien, Peter; Tanvir, N. R.; Wijers, Ralph A. M.; Dumas, C.; Hainaut, O.; Wong, D. S.; Baade, D.; Wang, L.; Amati, L.; Cappellaro, E.; Castro Tirado, A. J.; Ellison, S.; Frontera, F.; Fruchter, Andrew S.; Greiner, J.; Kawabata, K.; Ledoux, C.; Maeda, K.; Møller, P.; Nicastro, L.; Rol, E.; Starling, R. (NATURE PUBLISHING GROUP, 2006-08-31)
      Long-duration gamma-ray bursts (GRBs) are associated with type Ic supernovae(1) that are more luminous than average(2-5) and that eject material at very high velocities. Less-luminous supernovae were not hitherto known to ...
    • Probing cosmic chemical evolution with gamma-ray bursts: GRB 060206 at z=4.048 
      Fynbo, Johan P. U.; Starling, R. L. C.; Ledoux, C.; Wiersema, K.; Thöne, C. C.; Sollerman, J.; Jakobsson, Páll; Hjorth, Jens; Watson, Darach; Vreeswijk, Paul M.; Møller, P.; Rol, E.; Gorosabel, Jorge; Näränen, J.; Wijers, Ralph A. M.; Björnsson, G.; Castro Cerón, José María; Curran, P.; Hartmann, D. H.; Holland, S. T.; Jensen, Brian L.; Levan, A. J.; Limousin, M.; Kouveliotou, C.; Nelemans, G.; Pedersen, K.; Priddey, R. S.; Tanvir, N. R. (EDP SCIENCES S A, 2006-06)
      Aims. We present early optical spectroscopy of the afterglow of the gamma-ray burst GRB060206 with the aim of determining the metallicity of the GRB absorber and the physical conditions in the circumburst medium. We also ...
    • Rapid-response mode VLT/UVES spectroscopy of GRB060418 - Conclusive evidence for UV pumping from the time ... 
      Vreeswijk, Paul M.; Ledoux, C.; Smette, A.; Ellison, S.; Jaunsen, A. O.; Andersen, M. I.; Fruchter, Andrew S.; Fynbo, Johan P. U.; Hjorth, Jens; Kaufer, A.; Moller, P.; Petitjean, P.; Savaglio, S.; Wijers, Ralph A. M. (2007)
      We present high-resolution spectroscopic observations of GRB 060418, obtained with VLT/UVES. These observations were triggered using the VLT Rapid-Response Mode (RRM), which allows for automated observations of transient ...
    • Sharpening quasar absorption lines with ESPRESSO? Temperature of warm gas at z ~2, constraints on the Mg ... 
      Noterdaeme, Pasquier; Balashev, S.; Ledoux, C.; Duchoquet, G.; López Morales, Sebastián; Telikova, K.; Boissé, P.; Krogager, J. K.; De Cia, A.; Bergeron, J. (EDP Sciences, 2021)
      Aims. We aim to study several key physical properties of quasar absorption-line systems that are subtly encoded in their absorption profiles and have not yet been thoroughly investigated or constrained.Methods. We analysed ...
    • The evolution of the cosmic microwave background temperature Measurements of T(CMB) at high redshift from ... 
      Noterdaeme, P.; Petitjean, P.; Srianand, R.; Ledoux, C.; López, S. (EDP SCIENCES S A,, 2011-02)
      A milestone of modern cosmology was the prediction and serendipitous discovery of the cosmic microwave background (CMB), the radiation leftover after decoupling from matter in the early evolutionary stages of the Universe. ...