Astrophysical: Galaxies

  • Publication
    Near-infrared line-strengths in elliptical galaxies: evidence for initial mass function variations?
    We present new relations between recently defined line-strength indices in the near-infrared (CaT*, CaT, PaT, MgI and sTiO) and central velocity dispersion (σ0)...
  • Publication
    Near-Infrared Observations of BL Lacertae Host Galaxies
    Multiband near-infrared images of 12 BL Lacertae objects were obtained with the 2.5 m telescope at the Las Campanas Observatory in order to determine the...
  • Publication
    Near-infrared spectroscopic indices for unresolved stellar populations. III. Composite indices definition as age and metallicity tracers and model comparison
    Recent advances in the stellar population studies of unresolved galaxies in the NIR domain demonstrated that it contains several line-strength indices to be...
  • Publication
    Near-infrared spectroscopy of nearby Seyfert galaxies - I. First results
    We present near-infrared 1.5-2.5μm moderate-resolution long-slit spectra of two Seyfert 1 galaxies (NGC 1097 and 1566), three Seyfert 2s (NGC 1386, 4945 and...
  • Publication
    Near-infrared spectroscopy of nearby Seyfert galaxies - II. Molecular content and coronal emission
    We present subarcsec near-infrared 1.5-2.5 μm moderate resolution long-slit spectra of eight nearby Seyfert galaxies (z 0.01), both parallel to the ionization...
  • Publication
    Near-Infrared Spectroscopy of Seyfert Galaxies. Nuclear Activity and Stellar Population
    Near-infrared (near-IR) spectroscopic data for the five Seyfert galaxies with jet-gas interaction Mrk 348, Mrk 573, Mrk 1066, NGC 7212, and NGC 7465, taken with...
  • Publication
    Near-infrared spectroscopy of the circumnuclear star formation regions in M100: evidence for sequential triggering
    We present low-resolution (R~450) K-band spectroscopy for 16 of the 43 circumnuclear star-forming knots in M100 identified by Ryder & Knapen. We compare our...
  • Publication
    Near-infrared surface photometry of bulges and disks of spiral galaxies. The data
    We present optical and near-infrared (NIR) surface brightness and colour profiles, in bands ranging from U to K, for the disk and bulge components of a complete...
  • Publication
    Near-infrared/optical counterparts of hotspots in radio galaxies
    We present new high spatial resolution Very Large Telescope (VLT) and Very Large Array (VLA) observations of a sample of nine low-power (P1.4GHz