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

La Vía Láctea y el Grupo Local (MWLG)
  • Publicación
    The blue supergiant Sher 25 and its intriguing hourglass nebula
    The blue supergiant Sher25 is surrounded by an asymmetric, hourglass-shaped circumstellar nebula. Its structure and dynamics have been studied previously...
  • Publicación
    The Brightest Young Star Clusters in NGC 5253.
    The nearby dwarf starburst galaxy NGC 5253 hosts a number of young, massive star clusters, the two youngest of which are centrally concentrated and surrounded...
  • Publicación
    The bursty star formation history of the Fornax dwarf spheroidal galaxy revealed with the HST
    We present a new derivation of the star formation history (SFH) of the dSph galaxy Fornax in two central regions, characterized by unprecedented precision and...
  • Publicación
    The C+N+O Abundance of ω Centauri Giant Stars: Implications for the Chemical-enrichment Scenario and the Relative Ages of Different Stellar Populations
    We present a chemical-composition analysis of 77 red-giant stars in Omega Centauri. We have measured abundances for carbon and nitrogen, and combined our...
  • Publicación
    The Carbon Star DY Persei May Be a Cool R Coronae Borealis Variable
    Optical and near-IR photometry suggests that the carbon star DY Persei exhibits fadings similar to those of R Coronae Borealis (RCB) variables. Photometric...
  • Publicación
    The Carina Project IX: On Hydrogen and Helium Burning Variables
    We present new multiband (UBVI) time-series data of helium burning variables in the Carina dwarf spheroidal galaxy. The current sample includes 92 RR Lyrae—six...
  • Publicación
    The Carina Project. IV. Radial Velocity Distribution
    We present new and accurate radial velocity (RV) measurements of luminous stars of all ages (old horizontal branch, intermediate-age red clump, and young blue...
  • Publicación
    The Carina Project. V. The Impact of NLTE Effects on the Iron Content
    We have performed accurate iron abundance measurements for 44 red giants (RGs) in the Carina dwarf spheroidal (dSph) galaxy. We used archival, high-resolution...
  • Publicación
    The Carina Project. VI. The Helium-burning Variable Stars
    We present new optical (BVI) time-series data for the evolved variable stars in the Carina dwarf spheroidal galaxy. The quality of the data and the observing...