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Bisector Velocities of Hα in the roAp Star α Cir: Probing the Principal Pulsation Mode
Published online by Cambridge University Press: 08 February 2017
Extract
α Circini is the brightest of the known rapidly oscillating Ap (roAp) stars. Previous observations of this star in photometry (Kurtz et al. 1994) have shown that it has one dominant pulsation mode, which is a pure oblique dipole mode (ℓ = 1) with a frequency of 2442 μHz (P = 6.825 min). Kurtz et al. (1994) measured the amplitude of the principal mode to be 2.55 mmag (Strömgren v).
- Type
- V. Asteroseismology I
- Information
- Symposium - International Astronomical Union , Volume 185: New Eyes to See Inside the Sun and Stars , 1998 , pp. 309 - 310
- Copyright
- Copyright © Kluwer 1998