Publication type: Refereed

  • Publication
    On the physical origin of the second solar spectrum of the Sc II line at 4247 Å
    Context: The peculiar three-peak structure of the linear polarization profile shown in the second solar spectrum by the Ba ii line at 4554 Å has been...
  • Publication
    On the Possible Existence of Short-Period g-Mode Instabilities Powered by Nuclear-Burning Shells in Post-Asymptotic Giant Branch H-Deficient (PG1159-Type) Stars
    We present a pulsational stability analysis of hot post-asymptotic giant branch (AGB) H-deficient pre-white dwarf stars with active He-burning shells. The...
  • Publication
    On the possible triple central star system of PN SuWt 2: no ménage à trois at the heart of the Wedding Ring
    SuWt 2 is a planetary nebula consisting of a bright ring-like waist from which protrude faint extended lobes - a morphology believed to be typical of...
  • Publication
    On the post-common-envelope central star of the planetary nebula NGC 2346
    The common-envelope phase is one of the most poorly understood phases of (binary) stellar evolution, in spite of its importance in the formation of a wide range...
  • Publication
    On the post-T-Tauri nature of late-type visual companions to B-type stars
    We report on intermediate-to-high resolution spectroscopy and standard broadband photometry of late-type visual companions to early-type stars. Our program...
  • Publication
    On the potassium-rotation connection in late-type Alpha Persei stars
    We present measurements of the K I λ 7699 line from spectra of 19 late-type members of the αPersei cluster obtained with the Intermediate Dispersion...
  • Publication
    On the Presence of Metallofullerenes in Fullerene-rich Circumstellar Envelopes
    The presence of neutral C 60 fullerenes in circumstellar environments has been firmly established by astronomical observations as well as laboratory experiments...
  • Publication
    On the presence of thermal Sunyaev-Zel'dovich induced signal in the first-year WMAP temperature maps
    Using available optical and X-ray catalogues of clusters and superclusters of galaxies, we build templates of thermal Sunyaev-Zel'dovich (tSZ) emission as they...
  • Publication
    On the presence of two discs in the X-ray/Be binary A 0535 + 26/HDE 245770
    The analysis of the efficiency of accretion in the X-ray binary system A 0535 + 26/HDE 245770 and of the specific angular momentum of the matter accreted during...