Líneas de investigación: La Vía Láctea y el Grupo Local (MWLG)

La Vía Láctea y el Grupo Local (MWLG)
  • Publicación
    The Trace of the CNO Cycle in the Ring Nebula NGC 6888
    We present new results on the chemical composition of the Galactic ring nebula NGC 6888 surrounding the WN6(h) star WR136. The data are based on deep...
  • Publicación
    The TRGB Distance to the Second Galaxy “Missing Dark Matter”: Evidence for Two Groups of Galaxies at 13.5 and 19 Mpc in the Line of Sight of NGC 1052
    A second galaxy “missing dark matter” (NGC 1052-DF4) has been reported recently. Here we show, using the location of the tip of the red giant branch (TRGB)...
  • Publicación
    The triggering mechanism and properties of ionized outflows in the nearest obscured quasars
    We have identified ionized outflows in the narrow-line region of all but one Sloan Digital Sky Survey type 2 quasars (QSO2) at z≲0.1 (20/21, detection rate 95...
  • Publicación
    The Tucana dwarf spheroidal galaxy: not such a massive failure after all
    Context. Isolated local group (LG) dwarf galaxies have evolved most or all of their life unaffected by interactions with the large LG spirals and therefore...
  • Publicación
    The two metallicity groups of the globular cluster M 22: a chemical perspective
    We present a detailed chemical composition analysis of 35 red giant stars in the globular cluster M 22. High resolution spectra for this study were obtained at...
  • Publicación
    The ultracool helium-atmosphere white dwarf companion of PSR J0740+6620?
    We report detection of the likely companion of the binary millisecond pulsar (MSP) J0740+6620 with the Gran Telescopio Canarias in the r' and i' bands. The...
  • Publicación
    The Ultraviolet Spectrum and Physical Properties of the Mass Donor Star in HD 226868 = Cygnus X-1
    We present an examination of high-resolution, ultraviolet (UV) spectroscopy from Hubble Space Telescope of the photospheric spectrum of the O-supergiant in the...
  • Publicación
    The Undiscovered Ultradiffuse Galaxies of the Local Group
    Ultradiffuse galaxies (UDGs) are attractive candidates to probe cosmological models and test theories of galaxy formation at low masses; however, they are...
  • Publicación
    The Updated BaSTI Stellar Evolution Models and Isochrones. I. Solar-scaled Calculations
    We present an updated release of the BaSTI (a Bag of Stellar Tracks and Isochrones) stellar model and isochrone library for a solar-scaled heavy element...