Detection of 21-cm, H2 and Deuterium absorption at z>3 along the line-of-sight to J1337+3152

Abstract

We report the detection of 21-cm and H2 absorption lines in the same DLA system (log N(HI)=21.36+-0.10) at zabs=3.17447 towards SDSSJ133724+315254 (z=3.174). We estimate the spin temperature of the gas to be, Ts~600 K, intermediate between the expected values for cold and warm neutral media. This suggests that the HI absorption originates from a mixture of different phases. The total molecular fraction is low, f=10^-7, and H2 rotational level populations are not in equilibrium. The average abundance of the alpha-elements is, [S/H]=-1.45. N and Fe are found underabundant with respect to alpha-elements by ~1.0 dex and ~0.5 dex respectively. Using photoionization models we conclude that the gas is located more than 270 kpc away from the QSO. While the position of 21-cm absorption line coincides with the H2 velocity profile, their centroid are shifted by 2.7+-1.0 km/s from each other. However, the position of the strongest metal absorption component matches the position of the 21-cm absorption line within 0.5 km/s. From this, we constrain the variation of the combination of fundamental constants x=alpha^2 Gp/mu, Delta x/x=-(1.7+-1.7)x10^-6. This system is unique as we can at the same time have an independent constrain on mu using H2 lines. However only Werner band absorption lines are seen and the range of sensitivity coefficients is too narrow to provide a stringent constraint: Delta mu/mu <= 4.0x10^-4. The VLT/UVES spectrum reveals another DLA at zabs=3.16768 with log N(HI)=20.41+-0.15 and low metallicity, [Si/H]=-2.68+-0.11. We derive log N(DI)/N(HI)=-(4.93+-0.15) in this system. This is a factor of two smaller than the value expected from the best fitted value of Omega_b from the WMAP 5 yr data. This confirms the presence of astration of deuterium even at very low metallicity. [abridged]

14 pages, 11 figures, 4 tables, accepted for publication in MNRAS

References in corpus (18)

• The chemical composition of the Sun
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Evolution of the cosmological mass density of neutral gas from Sloan Digital Sky Survey II - Data Release 7
• A strong case for fast stellar rotation at very low metallicities
• Molecular hydrogen in high-redshift Damped Lyman-alpha systems: The VLT/UVES database
• Deuterium Abundance in the Most Metal-Poor Damped Lyman alpha System: Converging on Omega_baryons
• C, N, O Abundances in the Most Metal-Poor Damped Lyman alpha Systems
• Probing radio source environments via HI and OH absorption
• Diffuse molecular gas at high redshift: Detection of CO molecules and the 2175 Å dust feature at z=1.64
• Hot Halos around High Redshift Protogalaxies: Observations of O VI and N V Absorption in Damped Lyman Alpha systems
• An Observational Determination of the Proton to Electron Mass Ratio in the Early Universe
• HD molecules at high redshift: A low astration factor of deuterium in a solar-metallicity DLA system at z=2.418
• Physical conditions in the neutral interstellar medium at z=2.43 toward Q2348-011
• The Nitrogen and Oxygen abundances in the neutral gas at high redshift
• Molecular Hydrogen in a Damped Lyman-alpha System at z_abs=4.224
• A complete sample of 21-cm absorbers at z~1.3: Giant Metrewave Radio Telescope Survey Using MgII Systems
• HI 21cm Absorption at $z\sim 2.347$ towards PKS B0438-436
• Relative abundance pattern along the profile of high redshift Damped Lyman-alpha systems

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