Publication type: Refereed

  • Publication
    On the nature of the current GOLF p-mode signal
    The GOLF experiment on board SOHO is designed to measure global oscillations of the disk-integrated sunlight with high sensitivity and with long term stability...
  • Publication
    On the nature of the extragalactic number counts in the K-band
    Context: The galaxy number counts has been traditionally used to test models of galaxy evolution. However, the origin of significant differences in the shape of...
  • Publication
    On the nature of the most obscured C-rich AGB stars in the Magellanic Clouds
    The stars in the Magellanic Clouds with the largest degree of obscuration are used to probe the highly uncertain physics of stars in the asymptotic giant branch...
  • Publication
    On the nature of the photometric variability of the luminous blue variable P Cygni.
    P Cygni is one of the most luminous variable stars in our Galaxy. It is the only luminous blue variable which does not show photometric variability on a scale...
  • Publication
    On the nature of the red, 2MASS-selected AGN in the local Universe I: an optical spectroscopic study
    We present optical spectra for a representative sample of 27 nearby (z 0.2) Two Micron All Sky Survey (2MASS)-selected active galactic nuclei (AGN) with red...
  • Publication
    On the nature of transverse coronal waves revealed by wavefront dislocations
    Context. Coronal waves are an important aspect of the dynamics of the plasma in the corona. Wavefront dislocations are topological features of most waves in...
  • Publication
    On the nature of two low-dot{M} X-ray bursters: 1RXS J170854.4-321857 and 1RXS J171824.2-402934
    We carried out Chandra observations of two low-luminosity low-mass X-ray binaries, 1RXS J170854.4-321857 and 1RXS J171824.2-402934, for which previously single...
  • Publication
    On the nitrogen abundance of fast, low-ionization emission regions: the outer knots of the planetary nebula NGC 7009
    We have constructed a 3D photoionization model of a planetary nebula (PN) similar in structure to NGC 7009 with its outer pair of knots (also known as FLIERs -...
  • Publication
    On the non-evolution of the dependence of black hole masses on bolometric luminosities for QSOs
    There are extremely luminous quasi stellar objects (QSOs) at high redshift which are absent at low redshift. The lower luminosities at low redshifts can be...