Astrophysical: Galaxies

  • Publication
    The Number of Dwarf Satellites of Disk Galaxies versus their Bulge Mass in the Standard Model of Cosmology
    There is a correlation between the bulge mass of the three main galaxies of the Local Group (LG), i.e., M31, Milky Way (MW), and M33, and the number of their...
  • Publication
    The number of globular clusters around the iconic UDG DF44 is as expected for dwarf galaxies
    There is a growing consensus that the vast majority of ultradiffuse galaxies (UDGs) are dwarf galaxies. However, there remain a few UDGs that seem to be special...
  • Publication
    The Number of Tidal Dwarf Satellite Galaxies in Dependence of Bulge Index
    We show that a significant correlation (up to 5σ) emerges between the bulge index, defined to be larger for a larger bulge/disk ratio, in spiral galaxies with...
  • Publication
    The Obscuration in LINERs
    LINERs have been a class of low-luminosity AGN difficult to explain under the unified model. It has been claimed (González-Martín et al. 2009b) that a high...
  • Publication
    The Odd Offset between the Galactic Disk and Its Bar in NGC~3906
    We use mid-infrared 3.6 and 4.5 μm imaging of NGC 3906 from the Spitzer Survey of Stellar Structure in Galaxies (S4G) to understand the nature of an unusual...
  • Publication
    The Onset of a Three-Galaxy Merger in the Compact Group of Galaxies HCG 95?
    In this Letter we report new evidence for a close three-galaxy interaction in the compact group of galaxies HCG 95. Deep optical imaging in the Johnson UBVRI...
  • Publication
    The optical behaviour of BL Lacertae at its maximum brightness levels: a blend of geometry and energetics
    In 2021 BL Lacertae underwent an extraordinary activity phase, which was intensively followed by the Whole Earth Blazar Telescope (WEBT) Collaboration. We...
  • Publication
    The optical morphologies of the 2 Jy sample of radio galaxies: evidence for galaxy interactions
    We present deep Gemini Multi-Object Spectrograph South (GMOS-S)/Gemini optical broad-band images for a complete sample of 46 southern 2 Jy radio galaxies at...
  • Publication
    The optical properties of low redshift radio galaxies
    We present morphological and photometric properties of 79 low redshift (z=-24.0 with a clear trend for FRI sources to be ~ 0.5 mag brighter than FRII galaxies...