Short-period line profile variations in the Be star ε Cap |
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| Authors: | L A Balona W A Lawson |
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| Institution: | South African Astronomical Observatory, PO Box 9, Observatory 7935, Cape, South Africa;School of Physics, University College UNSW, Australian Defence Force Academy, Canberra, ACT 2600, Australia |
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| Abstract: | We present new high-dispersion spectroscopic data for the Be star ε Cap. The purpose of these data is to study the short-period line profile variations. By using a two-dimensional period-finding technique, we confirm that the photometric period of 0.99 d is present in the helium line profiles. We show that the variations are not easily explained by non-radial pulsation and suggest that corotating circumstellar material is responsible. |
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| Keywords: | line: profiles stars: early-type stars: emission-line Be stars: individual: ε Cap |
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