Journal: Astronomy and Astrophysics

  • Publication
    Forbidden hugs in pandemic times. I. Luminous red nova AT 2019zhd, a new merger in M 31
    We present the follow-up campaign of the luminous red nova (LRN) AT 2019zhd, the third event of this class observed in M 31. The object was followed by several...
  • Publication
    Forbidden hugs in pandemic times. II. The luminous red nova variety: AT 2020hat and AT 2020kog
    We present the results of our monitoring campaigns of the luminous red novae (LRNe) AT 2020hat in NGC 5068 and AT 2020kog in NGC 6106. The two objects were...
  • Publication
    Forbidden hugs in pandemic times. IV. Panchromatic evolution of three luminous red novae
    We present photometric and spectroscopic data on three extragalactic luminous red novae (LRNe): AT 2018bwo, AT 2021afy, and AT 2021blu. AT 2018bwo was...
  • Publication
    Force equation of the large-scale structure of the Universe.
    This article presents a statistical-mechanical treatment of a relationship (the force equation) between the gravitational potential for two particles and the...
  • Publication
    Formation and evolution of dwarf early-type galaxies in the Virgo cluster. II. Kinematic scaling relations
    We place our sample of 18 Virgo dwarf early-type galaxies (dEs) on the (V - K)e-velocity dispersion, Faber-Jackson, and fundamental plane (FP) scaling relations...
  • Publication
    Formation and morphology of anomalous solar circular polarization
    Context. The morphology of spectral line polarization is the most valuable observable to investigate the magnetic and dynamic solar atmosphere. However, in...
  • Publication
    Formation of lithium lines in very cool dwarfs.
    We present LTE and NLTE results on the formation of LiI lines (λ6103, λ6708, and λ8126) in the atmospheres of solar metallicity dwarfs with effective...
  • Publication
    Formation of S0 galaxies through mergers. Antitruncated stellar discs resulting from major mergers <xref ref-type="fn" rid="FN1">
    Context. Lenticular galaxies (S0s) are more likely to host antitruncated (Type III) stellar discs than galaxies of later Hubble types. Major mergers are...
  • Publication
    Formation of S0 galaxies through mergers. Bulge-disc structural coupling resulting from major mergers
    Context. Observations reveal a strong structural coupling between bulge and disc in S0 galaxies, which seems difficult to explain if they have formed from...