Publication type: Non-refereed

  • Publication
    The Wide Field Imager at the 2.2-m MPG/ESO telescope: first views with a 67-million-facette eye.
    The basic capabilities of the Wide Field Imager (WFI) were described in a previous Messenger article (No. 93, p. 13; see also Table 1) which also includes a...
  • Publication
    The Wilson Effect in Sunspots
    An analysis of the center to limb variation of the geometrical properties of spots has been carried out. It has revealed that spots do not have a symmetrical...
  • Publication
    The Winds of O-Type Stars: Ionization Structure and Revised Stellar Parameters from Far-UV Spectra
    We derived consistent photospheric and wind parameters of O-type stars, by analyzing high-resolution spectra in the range 905 to 3250 Å with line-blanketed...
  • Publication
    The X ray transient GS2023+338: The 0d.24 and 6d.5 modulations
    High resolution spectrophotometry of the black hole system V404 Cyg during quiescence, performed during 1990 and 1991, is discussed. In addition to a 6.5d...
  • Publication
    The X-Ray Behavior of Supergiant Fast X-Ray Transients: An INTEGRAL View
    The data provided by the ESA INTEGRAL mission have revealed the presence of a huge new population of HMXB sources. Among them, an important fraction belong to...
  • Publication
    The X-Ray Light Curve of XY Ursae Maioris
    Not Available
  • Publication
    The X-ray Nature of the LINER Nuclear Sources
    The analysis of the X-ray data for a sample of 51 LINER nuclei with available X-ray Chandra imaging is reported. Our aim was to investigate the physical...
  • Publication
    The X-ray nova GRO 10422+32 in decline and quiescence
    Not Available
  • Publication
    The X-ray Point Source Population of NGC 300
    NGC 300 was observed by the Chandra X-ray Observatory on 24 Sept. 2010 for 63 ks as part of the Chandra Local Volume Survey. Roughly one hundred highly...