Journal: Astronomy and Astrophysics

  • Publication
    Substellar objects in star formation regions: A deep near infrared study in the Serpens cloud
    We present near infrared (J, H and Ks) observations of a 5'× 10' sample field in the Serpens Star Formation region obtained with SOFI at the NTT. These...
  • Publication
    Sulphur and zinc abundances in Galactic halo stars revisited
    Aims:Based on a new set of sulphur abundances in very metal-poor stars and an improved analysis of previous data, we aim at resolving current discrepancies on...
  • Publication
    Sunspot irradiance deficit, facular excess, and the energy balance of solar active regions.
    Plage areas and intensities derived from CaIIK spectroheliograms are used as a proxy for the facular irradiance excess of solar active regions for the period 19...
  • Publication
    Sunspot seismic halos generated by fast MHD wave refraction
    Aims: We suggest an explanation for the high-frequency power excess surrounding active regions known as seismic halos. Methods: We use numerical simulations of...
  • Publication
    Super-Earth of 8 M⊕ in a 2.2-day orbit around the K5V star K2-216
    Context. Although thousands of exoplanets have been discovered to date, far fewer have been fully characterised, in particular super-Earths. The KESPRINT...
  • Publication
    Super-orbital variability of LS I +61°303 at TeV energies
    Context. The gamma-ray binary LS I +61°303 is a well-established source from centimeter radio up to very high energy (VHE; E> 100 GeV). The broadband emission...
  • Publication
    Superbursts at near-Eddington mass accretion rates
    Models for superbursts from neutron stars involving carbon shell flashes predict that the mass accretion rate should be anywhere in excess of one tenth of the...
  • Publication
    Superluminal non-ballistic jet swing in the quasar NRAO 150 revealed by mm-VLBI
    Context: NRAO 150, a compact and bright radio to mm source showing core/jet structure, has been recently identified as a quasar at redshift z = 1.52 through a...
  • Publication
    Supermassive black hole wake or bulgeless edge-on galaxy?
    A recent paper reported the serendipitous discovery of a thin linear object interpreted as the trail of star-forming regions left behind by a runaway...