Lines of research: The Milky Way and the Local Group (MWLG)

The Milky Way and the Local Group (MWLG)
  • Publication
    A detailed study of the H ii region M 43 and its ionizing star
    Aims: We have selected the Galactic H ii region M 43, a close-by apparently spherical nebula ionized by a single star (HD 37061, B0.5 V) to investigate several...
  • Publication
    A Disk and No Signatures of Tidal Distortion in the Galaxy "Lacking" Dark Matter NGC 1052-DF2
    Using ultra-deep imaging (μ g = 30.4 mag arcsec -2; 3σ, 10″ × 10″), we probed the surroundings of the first galaxy "lacking" dark matter (DM) KKS2000[04] (NGC...
  • Publication
    A distance of 13 Mpc resolves the claimed anomalies of the galaxy lacking dark matter
    The claimed detection of a diffuse galaxy lacking dark matter represents a possible challenge to our understanding of the properties of these galaxies and...
  • Publication
    A Double Main Sequence in the Globular Cluster NGC 6397
    High-precision multi-band Hubble Space Telescope (HST) photometry reveals that the main sequence of the globular cluster NGC 6397 splits into two components...
  • News
    A dwarf irregular galaxy caught in transition
    Leo I is one of the youngest dwarf spheroidal (dSph) galaxies in the Local Group. Its relative isolation, extended and complex star formation history (SFH), and...
  • Publication
    A dwarf-dwarf merger and dark matter core as a solution to the globular cluster problems in the Fornax dSph
    The five globular clusters (GCs) of the Fornax dwarf spheroidal galaxy are puzzling for two reasons; the mass in GCs is high with respect to the galaxy's old...
  • Publication
    A giant exoplanet orbiting a very-low-mass star challenges planet formation models
    Surveys have shown that super-Earth and Neptune-mass exoplanets are more frequent than gas giants around low-mass stars, as predicted by the core accretion...
  • News
    A large tidal stream observed in the Sombrero galaxy
    According to the latest cosmological models, large spiral galaxies such as the Milky Way grew by absorbing smaller galaxies, by a sort of galactic cannibalism...
  • Publication
    A massive open cluster hiding in full sight
    Obscuration and confusion conspire to limit our knowledge of the inner Milky Way. Even at moderate distances, the identification of stellar systems becomes...