Publication type: Non-refereed

  • Publication
    On the MG 2 and Fe 2 resonance lines in Herbig AE stars: Preliminary results
    The IUE observed AB Aur, HD250550, and BD + 46 deg 3471 at high resolution in the range 2000 to 32000 A. The MgII resonance line profiles all show a P Cygni...
  • Publication
    On the morphology and internal kinematics of PNe (Invited Review)
    Not Available
  • Publication
    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...
  • Publication
    On the Nature of Dwarf Galaxies in the Interacting Group HCG 31
    We have analysed the morphology, kinematics, colors and chemical composition of the ionized gas of the different objects belonging to the interacting compact...
  • Publication
    On the Nature of Fossil Galaxy Groups
    We present a new sample of 25 fossil groups (FGs) at z
  • Publication
    On the nature of O Vz stars in 30 Doradus
    O Vz stars are defined as those O-type stars displaying HeII 4686 absorption line stronger than other He line in the blue spectral region. These stars have been...
  • Publication
    On the nature of O Vz stars in 30 Doradus.
    O Vz stars are defined as those O-type stars displaying He II 4686 absorption line stronger than other He line in the blue spectral region. These stars have...
  • Publication
    On the nature of small planets orbiting low-mass stars
    Planets smaller than Neptune are ubiquitous in the Galaxy and those around M stars constitute the bulk of warm and temperate worlds amenable for detailed...
  • Publication
    On the nature of starburst galaxies at low-z and their connection with interactions
    We investigate the properties of starbursts and the influence of galaxy-galaxy interactions on star formation (SF) in a sample of 1341 objects (distances < 40...