Journal: Astronomy and Astrophysics

  • Publication
    A spectroscopic analysis of the Luminous Blue Variable candidate WRA 751
    We present spectroscopic observations of the LBV candidate WRA 751 taken at different epochs during the period 1989-1995. These observations are used to monitor...
  • Publication
    A spectroscopic analysis of the most polarizing atomic lines of the second solar spectrum
    We present an analysis of the second solar spectrum, as plotted in graphical form in the three volumes of the atlas “The Second Solar Spectrum”, in the...
  • Publication
    A spectroscopic and kinematic survey of fast hot subdwarfs
    Hot subdwarfs (sdO/B) are the stripped helium cores of red giants formed via binary interactions. Close hot subdwarf binaries with massive white dwarf...
  • Publication
    A spectroscopic atlas of post-AGB stars and planetary nebulae selected from the IRAS point source catalogue
    Aims.We study the optical spectral properties of a sample of stars showing far infrared colours similar to those of well-known planetary nebulae. The large...
  • Publication
    A spectroscopic study of southern (candidate) γ Doradus stars. I. Time series analysis
    We present the results of a spectroscopic study of 37 southern (candidate) γ Doradus stars based on échelle spectra. The observed spectra were cross-correlated...
  • Publication
    A state-of-the-art analysis of the dwarf irregular galaxy NGC 6822
    We present a detailed photometric study of the dwarf irregular galaxy NGC 6822 aimed at investigating the properties of its stellar populations and, in...
  • Publication
    A statistical study of plasmoids associated with a post-CME current sheet
    Context. Coronal mass ejections (CMEs) are often observed to be accompanied by flare, current sheets, and plasmoids/plasma blobs. 2D and 3D numerical...
  • Publication
    A stellar occultation by the transneptunian object (50000) Quaoar observed by CHEOPS
    Context. Stellar occultation is a powerful technique that allows the determination of some physical parameters of the occulting object. The result depends on...
  • Publication
    A strong correlation between bar strength and global star forming activity in isolated barred galaxies
    I have studied the relation between the global star formation activity and the bar structure in a sample of isolated barred galaxies. The star formation...