Astrofísicas: Galaxias de bajo brillo superficial

  • Publicación
    A Disk and No Signatures of Tidal Distortion in the Galaxy "Lacking" Dark Matter NGC 1052-DF2

    Using ultra-deep imaging (μg = 30.4 mag arcsec-2; 3σ, 10″ × 10″), we probed the surroundings of the first galaxy "lacking" dark matter (DM) KKS2000[04] (NGC...

  • Publicación
    A Shallow Dark Matter Halo in Ultra-diffuse Galaxy AGC 242019: Are UDGs Structurally Similar to Low-surface-brightness Galaxies?

    A central question regarding ultra-diffuse galaxies (UDGs) is whether they are in a separate category from low-surface-brightness (LSB) galaxies, or just their...

  • Noticia
    Descubierto el mecanismo que elimina la materia oscura de las galaxias

    La escasez de materia oscura en la galaxia NGC1052-DF4 ha desconcertado durante varios años a la comunidad astronómica. Ahora, un equipo de investigadores del...

  • Publicación
    Shadows in the Dark: Low-surface-brightness Galaxies Discovered in the Dark Energy Survey

    We present a catalog of 23,790 extended low-surface-brightness galaxies (LSBGs) identified in $\sim 5000\,{\deg }^{2}$ from the first three years of imaging...

  • Publicación
    The Importance of Having an Extended Point-spread Function in Low Surface-brightness Science

    Obtaining and characterizing the extended point-spread function (PSF) is essential to extract accurate photometric information from deep imaging surveys. In...

  • Publicación
    Young, Blue, and Isolated Stellar Systems in the Virgo Cluster. I. 2D Optical Spectroscopy

    We use panoramic optical spectroscopy obtained with the Very Large Telescope/MUSE to investigate the nature of five candidate extremely isolated low-mass star...

  • Publicación
    Young, Blue, and Isolated Stellar Systems in the Virgo Cluster. II. A New Class of Stellar System

    We discuss five blue stellar systems in the direction of the Virgo cluster, analogous to the enigmatic object SECCO 1 (AGC 226067). These objects were...