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

The Milky Way and the Local Group (MWLG)
  • Publication
    The Missing Link? Discovery of Pulsations in the Nitrogen-rich PG 1159 Star PG 1144+005
    Up to 98% of all single stars will eventually become white dwarfs-stars that link the history and future evolution of the Galaxy, and whose previous evolution...
  • Publication
    The Missing Satellites of the Magellanic Clouds? Gaia Proper Motions of the Recently Discovered Ultra-faint Galaxies
    According to LCDM theory, hierarchical evolution occurs on all mass scales, implying that satellites of the Milky Way should also have companions. The recent...
  • Publication
    The mixed chemistry phenomenon in Galactic Bulge PNe
    Aims: We investigate the dual-dust chemistry phenomenon in planetary nebulae (PNe) and discuss reasons for its occurrence, by analyzing Spitzer/IRS spectra of a...
  • Grant
    The multiple dimensions of the Local Group: galactic evolution from structures, chemistry, dynamics and histories of star formation
    This project consists of investigating fundamental questions concerning the formation and evolution of galaxies from the smallest galactic scales to those of...
  • Publication
    The Na-O anticorrelation in horizontal branch stars. IV. M 22
    We obtained high-resolution spectra for 94 candidate stars belonging to the HB of M 22 with FLAMES. Previous works have indicated that this cluster has split...
  • Publication
    The nature and origin of substructure in the outskirts of M31 - II. Detailed star formation histories
    While wide-field surveys of M31 have revealed much substructure at large radii, understanding the nature and origin of this material is not straightforward from...
  • Publication
    The Nature of Dust in Compact Galactic Planetary Nebulae from Spitzer Spectra
    We present the Spitzer/Infrared Spectrograph (IRS) spectra of 157 compact Galactic planetary nebulae (PNe). These young PNe provide insight on the effects of...
  • Publication
    The nature of HH 223 from long-slit spectroscopy
    Context: HH 223 is a knotty, undulating nebular emission of ˜30 arcsec length found in the L723 star-forming region. It lies projected onto the largest...
  • Publication
    The Nature of Starbursts. I. The Star Formation Histories of Eighteen Nearby Starburst Dwarf Galaxies
    We use archival Hubble Space Telescope observations of resolved stellar populations to derive the star formation histories (SFHs) of 18 nearby starburst dwarf...