Astrophysical: Galaxies

  • Publication
    New Evidence for an Anisotropic Radiation Field in NGC 5252
    Observational evidence accumulated over the last decade strongly supports the idea that the ionizing radiation field in active galactic nuclei (AGNs) is...
  • Publication
    New evidence for mergers in compact groups of galaxies
    In the (logR_e_, μ_e_) plane defined by the logarithm of the effective radius and the effective surface brightness, elliptical galaxies that are members of...
  • Publication
    New GTC spectroscopic data and a statistical study to better constrain the redshift of the BL Lac RGB J2243 + 203
    We present new spectroscopic data of the BL Lac RGB 2243 + 203, and its surroundings, obtained with the OSIRIS Multi Object Spectrograph (MOS) mounted in the...
  • Publication
    New insights into the role of AGNs in forming the cluster red sequence
    As a considerable investment of time from various telescope facilities was dedicated toward studying the Spiderweb protocluster at z = 2.2, it so far remains...
  • Publication
    New insights on Stephan's Quintet: exploring the shock in three dimensions
    Aims: We study the ionized gas emission from the large scale shock region of Stephan's Quintet (SQ). Methods: We carried out integral field unit (IFU) optical...
  • Publication
    New Light and Shadows on Stephan's Quintet
    We present deep broadband R and narrowband Hα images of Stephan's Quintet. The observations in the R band show that the diffuse halo of Stephan's Quintet is...
  • Publication
    New Light in Star-Forming Dwarf Galaxies: The PMAS Integral Field View of the Blue Compact Dwarf Galaxy Mrk 409
    We present an integral field spectroscopic study of the central 2 × 2 kpc2 of the blue compact dwarf galaxy Mrk 409, observed with the Potsdam MultiAperture...
  • Publication
    New optical spectra and general discussion on the nature of ULXs
    We present optical spectroscopic observations of three Ultra Luminous X-ray sources (ULXs). Two of them are very close to the active galaxy NGC 720 and the...
  • Publication
    New Quasars Detected via Variability in the QUEST1 Survey
    By observing the high Galactic latitude equatorial sky in drift-scan mode with the QUEST (Quasar Equatorial Survey Team) Phase 1 camera, we have collected...