Journal: Astronomy and Astrophysics

  • Publication
    Optical analysis of the poor clusters Abell 610, Abell 725, and Abell 796, containing diffuse radio sources
    Aims: We study the dynamical status of the poor, low X-ray luminous galaxy clusters Abell 610, Abell 725, and Abell 796 (at z = 0.1, 0.09, and 0.16...
  • Publication
    Optical and EUV observations of solar flare kernels
    We present high-resolution spectral observations, covering the entire optical region (3800-9000 Å), of a solar flare observed during a multi-wavelength campaign...
  • Publication
    Optical and near-infrared follow-up observations of GRB980329
    We imaged the field of GRB980329 in the optical and in the near-infrared starting 20 hours after the event, at the ESO NTT, at the NOT, at the APO and at the...
  • Publication
    Optical and near-infrared spectroscopy of the black hole transient 4U 1543-47 during its 2021 ultra-luminous state
    We present simultaneous optical and near-infrared spectra obtained during the 2021 outburst of the black hole transient 4U 1543-47. The X-ray hardness-intensity...
  • Publication
    Optical and radio variability of the BL Lacertae object AO 0235+16: A possible 5-6 year periodicity
    The BL Lacertae object AO 0235+16 is well known for its extreme optical and radio variability. New optical and radio data have been collected in the last four...
  • Publication
    Optical dropout galaxies lensed by the cluster A2667
    Context. We investigate the nature and the physical properties of ten z, Y, and J-dropout galaxies selected in the field of the lensing cluster A2667. Aims...
  • Publication
    Optical follow-up of ROSAT discovered candidate members of the open cluster Coma Berenices
    We have carried out an optical follow-up of twelve ROSAT discovered candidate members of the Coma Berenices open cluster. VRI photometry and low resolution ( ~...
  • Publication
    Optical imaging for the Spitzer Survey of Stellar Structure in Galaxies. Data release and notes on interacting galaxies
    Context. The Spitzer Survey for Stellar Structure in Galaxies (S4G) and its more recently approved extension will lead to a set of 3.6 and 4.5 μm images for...
  • Publication
    Optical imaging of L723: the structure of HH 223
    Aims.We imaged the Lynds 723 dark nebula (L723) with the aim of studying the morphology of the Herbig-Haro object HH 223 and other line-emission nebula detected...