The incidence of nonradial pulsation in the lambda Bootis stars
Bohlender, D. A. · Gonzalez, J. -F. · Matthews, J. M.
Original · EN
We have completed a high-resolution, high-signal-to-noise, spectroscopic survey of the northern members of the peculiar lambda Boo stars in order to investigate the frequency of the incidence of nonradial pulsation (NRP) in these metal-deficient stars. Of 18 objects observed, 9 show conclusive evidence of NRP, which suggests that pulsation instability is a common phenomenon in the lambda Boo class.
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