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NRP Modeling of the Line Profile Variations of λ Eri in the 1994 Campaign

Published online by Cambridge University Press:  12 April 2016

Eiji Kambe ,
Ryuko Hirata ,
Juan Fabregat  and
1994 Campaign Team
Eiji Kambe
Affiliation:
Dept. of Geoscience, Nat’l Defence Acad., Yokosuka, Kanagawa 239-8686, Japan
Ryuko Hirata
Affiliation:
Dept. of Astron., Fac. of Science, Kyoto Univ., Kyoto 606-8502, Japan
Juan Fabregat
Affiliation:
Dept. de Matematica Aplicada y Astron., Univ. de Valencia, Valencia, Spain

Abstract

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We report attempts to model the observed line-profile variations (lpv) of λ Eri during a productive spectroscopic and photometric campaign in 1994 November. We find that none of the nonradial pulsation spheroidal modes with m = −1 — −3 could explain the lpv associated with the dominant 16.9 hr period since the horizontal velocity components and the temperature variations dominate the lpv for such modes. In contrast, certain tesseral toroidal modes can reproduce the observed lpv well both for the main 16.9 hr period and the 6.45 hr period.

Type
3. Periodic Variations
Information
International Astronomical Union Colloquium , Volume 175: The Be Phenomenon in Early-Type Stars , 2000 , pp. 252 - 255
Copyright
Copyright © Astronomical Society of the Pacific 2000

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