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  1. No Access

    Article

    On the Nature of Damped LYα Systems: Clues from Determinations of Elemental Abundance Ratios

    We present a study of the [α/Fe-peak] and [N/α] abundance ratios in Damped Lyα (DLA) systems. By using ratios of undepleted elements ([S/Zn] and [N/S]) or when abundances of refractory elements are corrected b...

    M. Centurión, P. Bonifacio, P. Molaro, G. Vladilo in Astrophysics and Space Science (1998)

  2. No Access

    Article

    The local interstellar medium: A test-bed for the galactic ISM

    We outline a method to explore the column density of the Local Interstellar Medium (LISM) using absorptions in the resonance H and K lines of Mgii. The intrinsic strengths of these lines in the temperature and de...

    R. Génova, J. E. Beckman, G. Vladilo, P. Molaro in Astrophysics and Space Science (1989)

  3. No Access

    Article

    Physical parameters of reflection nebulae in the galaxy

    We show how, given observed equivalent widths of Mgii and Mgi absorptions due to an interstellar cloud in which a late-B star is embedded, the basic physical parameters: kinetic temperature, mean density, electro...

    M. Centurión, G. Vladilo in Astrophysics and Space Science (1989)

  4. No Access

    Article

    Some considerations on the non-detection of interstellar Li and B towards the SN1987a

    A very low upper limit of 0.15 mÅ for the interstellar λ6707 Å Lii line has been recently derived towards the SN1987a by Baade and Magain (1988). This value corresponds toN(Li)<1.4×1011 cm−2 and gives [Li/H]<5.4×...

    P. Molaro, G. Vladilo in Astrophysics and Space Science (1989)