Publication type: Non-refereed

  • Publication
    Extending the Methods Used to Calibrate ISO to the GTC
    An accurate and traceable photometric calibration is becoming increasingly important for large telescopes if they are to reach their full potential. The...
  • Publication
    Extension of the Ca II Triplet Calibration as a Metallicity Indicator to Young and/or Metal-rich Systems: Application to the LMC
    The Ca II triplet is one of the most frequently measured features for deriving stellar metallicities from moderate resolution spectroscopy of red giants in old...
  • Publication
    Extension of the Virasoro and Neveu-Schwartz algebras and generalized Sturm-Liouville operators
    We consider the universal central extension of the Lie algebra $Vect (S^1)${math s}$ C^{infty}(S^1)$. The coadjoint representation of this Lie algebra has a...
  • Publication
    Extensions and contractions of the Lie algebra of q-pseudodifferential symbols
    We construct cocycles on the Lie algebra of pseudo- and q-pseudodifferential symbols of one variable and on their close relatives: the sine-algebra and the...
  • Publication
    Extensions of Virasoro group and Virasoro algebra by modules of tensor-densities on $S^1$
    We classify non-trivial (non-central) extensions of the group $Diff^+(S^1)$ of all diffeomorphisms of the circle preserving its orientation and of the Lie...
  • Publication
    Extinction as a tool to find distances to X-ray sources
    Finding distances in astronomy is notoriously difficult. With accurate optical spectroscopy, both the distance to and extinction (reddening) of normal stars can...
  • Publication
    Extinction corrections in ground based infrared spectrometry
    Calculations of atmospheric transmission through the M (5 microns) atmospheric window, at a resolution of 10 to the 3rd power are presented for sites at the...
  • Publication
    Extinction in the direction of the end-of-bar star formation region
    Not Available
  • Publication
    Extinction over the Canarian observatories: the limited influence of Saharan dust
    We present a study of the atmospheric extinction over the observatories of the Canary Islands, based mainly on photometric measurements of the V-band extinction...