Journal: Astronomy and Astrophysics

  • Publication
    Fluctuations of K-band galaxy counts
    We measure the variance in the distribution of off-plane (|b|>20o ) galaxies with m_K
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    Fluorescence of [Fe II] in H II regions
    A study of [Fe Ii] lines at various positions within the H Ii regions M42 and M43 is presented. The relative intensities of selected optical [Fe Ii] lines are...
  • Publication
    Fluorine abundances in dwarf stars of the solar neighbourhood
    Context. In spite of many observational efforts to characterize the chemical evolution of our Galaxy, not much is known about the origin of fluorine (F). Models...
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    FOCUS: a deconvolution method based on algorithmic complexity
    A new method for improving the resolution of images is presented. It is based on Occam's razor principle implemented using algorithmic complexity arguments. The...
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    Follow-up observations of binary ultra-cool dwarfs
    Context: Astrometric observations of resolved binaries provide estimates of orbital periods and will eventually lead to measurement of dynamical masses. Only a...
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    Follow-up observations of extremely metal-poor stars identified from SDSS
    Context. The most metal-poor stars in the Milky Way witnessed the early phases of formation of the Galaxy, and have chemical compositions that are close to the...
  • 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...
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    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...
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    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...