MOST detects corotating bright spots on the mid-O-type giant ξ Persei

  title={MOST detects corotating bright spots on the mid-O-type giant ξ Persei},
  author={T. Ramiaramanantsoa and A. Moffat and Andr'e-Nicolas Chen'e and N. Richardson and H. Henrichs and S. Desforges and V. Antoci and J. Rowe and J. Matthews and R. Kuschnig and W. Weiss and D. Sasselov and S. Rucinski and David B. Guenther U. Montr'eal and G. Observatory and U. Valpara'iso and U. Concepci'on and U. Amsterdam and U. Aarhus and NASA-Ames and U. Columbia and U. Vienna and H. CfA and U. Toronto and U. SaintMary's},
  journal={Monthly Notices of the Royal Astronomical Society},
  • T. Ramiaramanantsoa, A. Moffat, +22 authors U. SaintMary's
  • Published 2014
  • Physics
  • Monthly Notices of the Royal Astronomical Society
  • We have used the MOST (Microvariability and Oscillations of STars) microsatellite to obtain four weeks of contiguous high-precision broad-band visual photometry of the O7.5III(n)((f)) star ξ Persei in 2011 November. This star is well known from previous work to show prominent DACs (discrete absorption components) on time-scales of about 2 d from UV spectroscopy and non-radial pulsation with one (l = 3) p-mode oscillation with a period of 3.5 h from optical spectroscopy. Our MOST-orbit (101.4… CONTINUE READING
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