Items where Author is "Ledoux, C. "

Noterdaeme, P. ; Petitjean, P. ; Srianand, R. ; Ledoux, C. ; Lopez, S. (2011) The evolution of the cosmic microwave background temperature. Measurements of T_CMB at high redshift from carbon monoxide excitation Astronomy and Astrophysics, 526 (L7). L7.1-L7.4. ISSN 0004-6361

Noterdaeme, P. ; Petitjean, P. ; Ledoux, C. ; Lopez, S. ; Srianand, R. ; Vergani, S. D. (2010) A translucent interstellar cloud at z = 2.69: CO, H₂, and HD in the line-of-sight to SDSSJ123714.60 + 064759.5 Astronomy and Astrophysics, 523 (A80). A80.1-A80.17. ISSN 0004-6361

Srianand, R. ; Gupta, N. ; Petitjean, P. ; Noterdaeme, P. ; Ledoux, C. (2010) Detection of 21-cm, H₂ and deuterium absorption at z > 3 along the line of sight to J1337+3152 Monthly Notices of the Royal Astronomical Society, 405 (3). pp. 1888-1900. ISSN 0035-8711

Ivanchik, A. V. ; Petitjean, P. ; Balashev, S. A. ; Srianand, R. ; Varshalovich, D. A. ; Ledoux, C. ; Noterdaeme, P. (2010) HD molecules at high redshift: the absorption system at z = 2.3377 towards Q 1232 + 082 Monthly Notices of the Royal Astronmical Society, 404 (3). pp. 1583-1590. ISSN 0035-8711

Noterdaeme, P. ; Petitjean, P. ; Ledoux, C. ; Srianand, R. (2009) Evolution of the cosmological mass density of neutral gas from sloan digital sky survey II - Data Release Astronomy and Astrophysics, 505 (3). pp. 1087-1098. ISSN 0004-6361

Noterdaeme, P. ; Ledoux, C. ; Srianand, R. ; Petitjean, P. ; Lopez, S. (2009) Diffuse molecular gas at high redshift - Detection of CO molecules and the 2175 Å dust feature at z = 1.64 Astronomy and Astrophysics, 503 (3). pp. 765-770. ISSN 0004-6361

Fox, A. J. ; Prochaska, J. X. ; Ledoux, C. ; Petitjean, P. ; Wolfe, A. M. ; Srianand, R. (2009) Metal-enriched plasma in protogalactic halos - A survey of N V absorption in high-z damped and sub-damped Lyman-α systems Astronomy and Astrophysics, 503 (3). pp. 731-746. ISSN 0004-6361

Noterdaeme, P. ; Petitjean, P. ; Ledoux, C. ; Srianand, R. ; Ivanchik, A. (2008) HD molecules at high redshift - A low astration factor of deuterium in a solar-metallicity DLA system at z = 2.418 Astronomy and Astrophysics, 491 (2). pp. 397-400. ISSN 0004-6361

Srianand, R. ; Noterdaeme, P. ; Ledoux, C. ; Petitjean, P. (2008) First detection of CO in a high-redshift damped Lyman-αsystem Astronomy and Astrophysics, 482 (3). L39-L42. ISSN 0004-6361

Noterdaeme, P. ; Ledoux, C. ; Petitjean, P. ; Srianand, R. (2008) Molecular hydrogen in high-redshift damped Lyman-αsystems: the VLT/UVES database Astronomy and Astrophysics, 481 (2). pp. 327-336. ISSN 0004-6361

Petitjean, P. ; Ledoux, C. ; Srianand, R. (2008) The nitrogen and oxygen abundances in the neutral gas at high redshift Astronomy and Astrophysics, 480 (2). pp. 349-357. ISSN 0004-6361

Noterdaeme, P. ; Ledoux, C. ; Petitjean, P. ; Le Petit, F. ; Srianand, R. ; Smette, A. (2007) Excitation mechanisms in newly discovered H₂-bearing damped Lyman-α clouds:systems with low molecular fractions Astronomy and Astrophysics, 474 (2). pp. 393-407. ISSN 0004-6361

Fox, A. J. ; Ledoux, C. ; Petitjean, P. ; Srianand, R. (2007) C IV absorption in damped and sub-damped Lyman-αsystems: Correlations with metallicity and implications for galactic winds at z ≈ 2-3 Astronomy and Astrophysics, 473 (3). pp. 791-803. ISSN 0004-6361

Noterdaeme, P. ; Petitjean, P. ; Srianand, R. ; Ledoux, C. ; Le Petit, F. (2007) Physical conditions in the neutral interstellar medium at z = 2.43 toward Q 2348-011 Astronomy and Astrophysics, 469 (2). pp. 425-436. ISSN 0004-6361

Fox, A. J. ; Petitjean, P. ; Ledoux, C. ; Srianand, R. (2007) Hot halos around high redshift protogalaxies Observations of Ovi and Nv absorption in damped Lyman-αsystems Astronomy and Astrophysics, 465 (1). pp. 171-184. ISSN 0004-6361

Ledoux, C. ; Petitjean, P. ; Fynbo, J. P. U. ; Møller, P. ; Srianand, R. (2006) Velocity-metallicity correlation for high-z DLA galaxies: evidence of a mass-metallicity relation? Astronomy and Astrophysics, 457 (1). pp. 71-78. ISSN 0004-6361

Petitjean, P. ; Ledoux, C. ; Noterdaeme, P. ; Srianand, R. (2006) Metallicity as a criterion to select H₂-bearing damped Lyman-αsystems Astronomy and Astrophysics, 456 (3). L9-L12. ISSN 0004-6361

Heinmüller, J. ; Petitjean, P. ; Ledoux, C. ; Caucci, S. ; Srianand, R. (2006) Kinematics and star formation activity in the z_abs = 2.03954 damped Lyman-α system towards PKS 0458-020 Astronomy and Astrophysics, 449 (1). pp. 33-39. ISSN 0004-6361

Rodríguez, E. ; Petitjean, P. ; Aracil, B. ; Ledoux, C. ; Srianand, R. (2006) Relative abundance pattern along the profile of high redshift Damped Lyman-α systems Astronomy and Astrophysics, 446 (3). pp. 791-804. ISSN 0004-6361

Srianand, R. ; Petitjean, P. ; Ledoux, C. ; Ferland, G. ; Shaw, G. (2005) Molecular hydrogen at high-z: physical conditions in protogalaxies Proceedings of the International Astronomical Union, 1 . pp. 168-173. ISSN 1743-9213

Ivanchik, A. ; Petitjean, P. ; Varshalovich, D. ; Aracil, B. ; Srianand, R. ; Chand, H. ; Ledoux, C. ; Boisse, P. (2005) A new constraint on the time dependence of the proton-to-electron mass ratio. Analysis of the Q 0347-383 and Q 0405-443 spectra Astronomy and Astrophysics, 440 (1). pp. 45-52. ISSN 0004-6361

Gopal-Krishna, ; Ledoux, C. ; Melnick, J. ; Giraud, E. ; Kulkarni, V. ; Altieri, B. (2005) Optical and radio observations of a sample of 52 powerful ultra-steep spectrum radio sources Astronomy & Astrophysics, 436 (2). pp. 457-464. ISSN 0004-6361

Petitjean, Patrick ; Ivanchik, A. ; Srianand, Raghunathan ; Aracil, B. ; Varshalovich, D. ; Chand, H. ; Rodriguez, Esther ; Ledoux, C. ; Boissé, Patrick (2004) Time dependence of the proton-to-electron mass ratio Comptes Rendus Physique, 5 (3). pp. 411-415. ISSN 1631-0705

Gupta, N. ; Srianand, R. ; Petitjean, P. ; Ledoux, C. (2003) Outflowing material in the z_em = 4.92 BAL QSO SDSS J160501.21-011220.0 Astronomy and Astrophysics, 406 (1). pp. 65-73. ISSN 0004-6361

Ledoux, C. ; Srianand, R. ; Petitjean, P. (2002) Detection of molecular hydrogen in a near Solar-metallicity damped Lyman- αsystem at z_abs≈2 toward Q 0551-366 Astronomy and Astrophysics, 392 (3). pp. 781-789. ISSN 0004-6361

Varshalovich, D. A. ; Ivanchik, A. V. ; Petitjean, P. ; Srianand, R. ; Ledoux, C. (2001) HD molecular lines in an absorption system at redshift Z = 2.3377 Astronomy Letters, 27 (11). pp. 683-685. ISSN 1063-7737

Srianand, R. ; Petitjean, P. ; Ledoux, C. (2000) The cosmic microwave background radiation temperature at a redshift of 2.34 Nature, 408 (6815). pp. 931-935. ISSN 0028-0836