Short-period line profile variations in the Be star ɛ Cap

Details Short-period line profile variations in the Be star ɛ Cap Short-period line profile variations in the Be star ɛ Cap

Feb 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001mnras.321..131b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 321, Issue 1, pp. 131-142.

Astronomy and Astrophysics

Astronomy

7

Line: Profiles, Stars: Early-Type, Stars: Emission-Line, Be, Stars: Individual: &Epsi, Cap, Line: Profiles, Stars: Early-Type, Stars: Emission-Line, Be, Stars: Individual: Ɛ Cap

Scientific paper

We present new high-dispersion spectroscopic data for the Be star ɛ 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 0.99d 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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