Multi-Color Observations and Atmospheric Level Effects in roAp Stars

Kurtz, D. W.

doi:10.1007/978-94-011-4299-1_15

D. W. Kurtz²

Part of the book series: NATO Science Series ((ASIC,volume 544))

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Abstract

The problem of the pulsation amplitude and phase as a function of observed wavelength has led to the discovery that the vertical pulsation wavelength is short compared to the geometrical depth at optical depth τ = 1. A derivation showing that we can probe the pulsation over a significant portion of its vertical wavelength is shown. New observations and theoretical advances for Ap star models are then shown supporting this discovery. A comparison with helioseismic observations is made.

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Authors and Affiliations

Department of Astronomy, University of Cape Town, Rondebosch, 7701, South Africa
D. W. Kurtz

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D. W. Kurtz
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Astronomy and Space Sciences Department, Ege University Science Faculty, Bornova, İzmir, Turkey
Cafer İbanoğlu

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Kurtz, D.W. (2000). Multi-Color Observations and Atmospheric Level Effects in roAp Stars. In: İbanoğlu, C. (eds) Variable Stars as Essential Astrophysical Tools. NATO Science Series, vol 544. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4299-1_15

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DOI: https://doi.org/10.1007/978-94-011-4299-1_15
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-7923-6084-1
Online ISBN: 978-94-011-4299-1
eBook Packages: Springer Book Archive

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