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

The Milky Way and the Local Group (MWLG)
  • Publication
    Discovery of a nitrogen-enhanced mildly metal-poor binary system: Possible evidence for pollution from an extinct AGB star
    We report the serendipitous discovery of a nitrogen-rich, mildly metal-poor ([Fe/H] = -1.08) giant star in a single-lined spectroscopic binary system found in...
  • Publication
    Discovery of a young and massive stellar cluster. Spectrophotometric near-infrared study of Masgomas-1
    Context. Recent near-infrared data have contributed to the discovery of new (obscured) massive stellar clusters and massive stellar populations in previously...
  • Publication
    Discovery of an X-Ray Photoionized Optical Nebula and a Radio Nebula Associated with the ULX NGC 4861 X-1
    We have conducted long-slit spectroscopic observations and analyzed archival radio data for the ultraluminous X-ray source (ULX) NGC 4861 X-1. Our spectral line...
  • Publication
    Discovery of Resolved Magnetically Split Lines in SDSS/APOGEE Spectra of 157 Ap/Bp Stars
    We report on magnetic field measurements of 157 chemically peculiar A/B stars (Ap/Bp) based on resolved, magnetically split absorption lines present in H-band...
  • Publication
    Discovery of Stars Surrounded by Iron Dust in the Large Magellanic Cloud
    We consider a small sample of oxygen-rich, asymptotic giant branch stars in the Large Magellanic Cloud, observed by the Spitzer Space Telescope, exhibiting a...
  • Publication
    Discovery of the Broad-lined Type Ic SN 2013cq Associated with the Very Energetic GRB 130427A
    Long-duration gamma-ray bursts (GRBs) at z 1 are found in most cases to be accompanied by bright, broad-lined Type Ic supernovae (SNe Ic-BL). The highest...
  • Publication
    Discovery of the Massive Overcontact Binary VFTS352: Evidence for Enhanced Internal Mixing
    The contact phase expected to precede the coalescence of two massive stars is poorly characterized due to the paucity of observational constraints. Here we...
  • Publication
    Discovery of two neighbouring satellites in the Carina constellation with MagLiteS
    We report the discovery of two ultra-faint satellites in the vicinity of the Large Magellanic Cloud (LMC) in data from the Magellanic Satellites Survey...
  • Publication
    Disentangling the Galactic Halo with APOGEE. I. Chemical and Kinematical Investigation of Distinct Metal-poor Populations
    We find two chemically distinct populations separated relatively cleanly in the [Fe/H]–[Mg/Fe] plane, but also distinguished in other chemical planes, among...