@misc{OskinovaFeldmeierKretschmar2012,
  author    = {Oskinova, Lida and Feldmeier, Achim and Kretschmar, Peter},
  title     = {Clumped stellar winds in supergiant high-mass X-ray binaries},
  series = {Postprint der universit{\"a}t Potsdam : Mathematisch Naturwissenschaftliche Reihe},
  journal   = {Postprint der universit{\"a}t Potsdam : Mathematisch Naturwissenschaftliche Reihe},
  number    = {573},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-41391},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-413916},
  pages     = {287 -- 288},
  year      = {2012},
  abstract  = {The clumping of massive star winds is an established paradigm, which is confirmed by multiple lines of evidence and is supported by stellar wind theory. We use the results from time-dependent hydrodynamical models of the instability in the line-driven wind of a massive supergiant star to derive the time-dependent accretion rate on to a compact object in the Bondi-Hoyle-Lyttleton approximation. The strong density and velocity fluctuations in the wind result in strong variability of the synthetic X-ray light curves. Photoionization of inhomogeneous winds is different from the photoinization of smooth winds. The degree of ionization is affected by the wind clumping. The wind clumping must also be taken into account when comparing the observed and model spectra of the photoionized stellar wind.},
  language  = {en}
}
@misc{MartinsBergemannBestenlehneretal.2012,
  author    = {Martins, Fabrice and Bergemann, Maria and Bestenlehner, Joachim M. and Crowther, Paul A. and Hamann, Wolf-Rainer and Najarro, Francisco and Nieva, Maria Fernanda and Przybilla, Norbert and Freimanis, Juris and Hou, Weizhen and Kaper, Lex},
  title     = {SpS5 - II. Stellar and wind parameters},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {688},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-41495},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-414956},
  pages     = {9},
  year      = {2012},
  abstract  = {The development of infrared observational facilities has revealed a number of massive stars in obscured environments throughout the Milky Way and beyond. The determination of their stellar and wind properties from infrared diagnostics is thus required to take full advantage of the wealth of observations available in the near and mid infrared. However, the task is challenging. This session addressed some of the problems encountered and showed the limitations and successes of infrared studies of massive stars.},
  language  = {en}
}