The pulsating lambda Bootis star HD 105759

Details The pulsating lambda Bootis star HD 105759 The pulsating lambda Bootis star HD 105759

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.301.1099m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 301, Issue 4, pp. 1099-1103.

Other

8

Stars: Chemically Peculiar, Stars: Individual: Hd 105759, Stars: Oscillations, Stars: Variables: Other

Scientific paper

We present spectroscopic and multisite time series photometric observations of the star HD 105759 which confirm that this is a new pulsating lambda Bootis star. Our spectroscopy indicates an overall metallicity of [Z]=log Z-log Z_solar=-1 and that T_eff=8000+/-300 K and logg=4.0+/-0.2. The photometric data reveal that this star pulsates with at least five frequencies: 8.62, 12.69, 20.15, 21.27 and 23.66 d^-1. These frequencies do not all match those found in an earlier single-site study, indicating that the pulsation spectrum changes with time.

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