Journal: Astronomy and Astrophysics

  • Publication
    Rubidium abundances in solar metallicity stars
    Context. Rubidium is one of the few elements produced by the neutron capture s- and r-processes in almost equal proportions. Recently, a Rb deficiency ([Rb/Fe]...
  • Publication
    Rubidium and zirconium abundances in massive Galactic asymptotic giant branch stars revisited
    Context. Luminous Galactic OH/IR stars have been identified as massive (>4-5 M⊙) asymptotic giant branch (AGB) stars experiencing hot bottom burning and Li...
  • Publication
    Rubidium, zirconium, and lithium production in intermediate-mass asymptotic giant branch stars
    Context. A recent survey of a large sample of Galactic intermediate-mass (>3 M&sun;) asymptotic giant branch (AGB) stars shows that they exhibit large...
  • Publication
    RXCJ1111.6+4050 galaxy cluster: Observational evidence of a transitional fossil group
    We present a detailed kinematical and dynamical study of the galaxy cluster RXCJ1111.6+4050 (RXCJ1111), at z = 0.0756 using 104 new spectroscopic redshifts of...
  • Publication
    S Ori J053825.4-024241: a classical T Tauri-like object at the substellar boundary
    We present a spectrophotometric analysis of S Ori J053825.4-024241, a candidate member close to the substellar boundary of the young (1-8 Myr), nearby (~360 pc)...
  • Publication
    S4N: A spectroscopic survey of stars in the solar neighborhood. The Nearest 15 pc
    We report the results of a high-resolution spectroscopic survey of all the stars more luminous than M_V = 6.5 mag within 14.5 pc from the Sun. The Hipparcos...
  • Publication
    San Pedro Mártir observations of microvariability in obscured quasars
    Fast brightness variations are a unique tool to probe the innermost regions of active galactic nuclei (AGN). These variations are called microvariability or...
  • Publication
    Sardinia Radio Telescope observations of Abell 194. The intra-cluster magnetic field power spectrum
    Aims: We study the intra-cluster magnetic field in the poor galaxy cluster Abell 194 by complementing radio data, at different frequencies, with data in the...
  • Publication
    SBS 1150+599A: An extremely oxygen-poor planetary nebula in the Galactic halo?
    We report results of a spectrophotometric study of SBS 1150+599A and discuss the nature of this object based upon our data. Our study shows that SBS 1150+599A...