Journal: Astronomy and Astrophysics

  • Publication
    The nature of the X-ray binary transient MAXI J1834–021: Clues from its first observed outburst
    MAXI J1834–021 is a new X-ray transient discovered in February 2023. We analysed the spectral and timing properties of MAXI J1834–021 using NICER, NuSTAR and...
  • Publication
    The nature of the X-ray transient SAX J1711.6-3808
    SAX J1711.6-3808 is an X-ray transient in the Galactic bulge that was active from January through May of 2001 and whose maximum 1-200 keV luminosity was...
  • Publication
    The nature of V39: an LBV candidate or LBV impostor in the very low metallicity galaxy IC 1613?
    Context. Very few examples of luminous blue variable (LBV) stars or LBV candidates (LBVc) are known, particularly at metallicities below that of the Small...
  • Publication
    The nature of VX Sagitarii. Is it a TŻO, a RSG, or a high-mass AGB star?
    Aims: We present a spectroscopic analysis of the extremely luminous red star VX Sgr based on high-resolution observations combined with AAVSO light curve data...
  • Publication
    The near-infrared counterpart of 4U 1636-53
    Context. The optical counterpart of the neutron star X-ray binary and well known X-ray burster, 4U 1636-53 (=4U 1636-536 = V801 Ara) has been studied for three...
  • Publication
    The near-IR properties and continuum shapes of high redshift quasars from the Sloan Digital Sky Survey
    We present J-H-K' photometry for a sample of 45 high redshift quasars found by the Sloan Digital Sky Survey. The sample was originally selected on the basis of...
  • Publication
    The new carbon symbiotic star IPHAS J205836.43+503307.2
    Aims: We are performing a search for symbiotic stars using IPHAS, the INT Hα survey of the northern Galactic plane, and follow-up observations. Methods...
  • Publication
    The new orbital elements and properties of ɛ Persei
    A detailed analysis of a large collection of electronic spectra from three observatories, together with radial velocities published earlier, were used to derive...
  • Publication
    The NGC 346 massive star census. Nitrogen abundances for apparently single, narrow lined, hydrogen core burning B-type stars
    Previous analyses of two large spectroscopic surveys of early-type stars in the Large Magellanic Cloud (LMC) have found an excess of nitrogen enriched B-type...