Open AccessShort‐period line profile variations in the Be star ε Cap
Author(s) -
Balona L. A.,
Lawson W. A.
Publication year - 2001
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2001.03994.x
Subject(s) - physics , astrophysics , line (geometry) , period (music) , star (game theory) , astronomy , helium , be star , stars , atomic physics , geometry , mathematics , acoustics
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.