Discovery of the New Slowly Pulsating B Star HD 163830 (B5 II/III) from MOST Space-based Photometry

  title={Discovery of the New Slowly Pulsating B Star HD 163830 (B5 II/III) from MOST Space-based Photometry},
  author={Conny Aerts and Peter De Cat and Rainer Kuschnig and Jaymie M. Matthews and David B. Guenther and Anthony F. J. Moffat and Slavek M. Rucinski and Dimitar D. Sasselov and G. A. H. Walker and Werner W. Weiss},
  journal={The Astrophysical Journal Letters},
  pages={L165 - L168}
We report the discovery of a new slowly pulsating B star, with the largest number of detected frequencies to date by more than a factor of 3, based on 37 days of MOST (Microvariability and Oscillations of STars) satellite guide star photometry. The star HD 163830 (V = 9.3, B5 II/III) varies in 20 detected frequencies in the range 0.035-1.06 day-1 (0.4-12.3 μHz) with amplitudes from 0.7 to 7.6 mmag (with a signal-to-noise ratio from 4 to 41). Eighteen of these frequencies are consistent with low… 

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