Journal: Astronomy and Astrophysics

  • Publication
    A Si I atomic model for NLTE spectropolarimetric diagnostics of the 10 827 Å line
    Aims: The Si i 10 827 Å line is commonly used for spectropolarimetric diagnostics of the solar atmosphere. First, we aim at quantifying the sensitivity of the...
  • Publication
    A slow bar in the lenticular barred galaxy NGC 4277
    Aims: We characterised the properties of the bar hosted in lenticular galaxy NGC 4277, which is located behind the Virgo cluster. Methods: We measured the bar...
  • Publication
    A spatial study of the mid-IR emission features in four Herbig Ae/Be stars
    Context: Infrared (IR) spectroscopy and imaging provide a prime tool to study the characteristics of polycyclic aromatic hydrocarbon (PAH) molecules and the...
  • 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...