The incidence of nonradial pulsation in the lambda Bootis stars

Details The incidence of nonradial pulsation in the lambda Bootis stars The incidence of nonradial pulsation in the lambda Bootis stars

1998-05-18

arxiv.org/abs/astro-ph/9805227v1

Astronomy and Astrophysics

Astrophysics

3 pages, 1 figure, to appear in: Proc. of the 26th workshop of the European Working Group on CP stars, eds. P. North, A. Schne

Scientific paper

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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