BRITEning up the Be Phenomenon
Abstract
Observations of 25 Ori much expand the picture derived of other early-type Be stars with BRITE and SMEI. Two instead of one difference frequencies rule the variability: (a) The lower one, 0.0129 c/d, is the frequency of events with full amplitudes of 100-200 mmag which may signal mass loss possibly driven by the higher one, 0.1777 c/d. (b) Much of the entire power spectrum is a tightly woven network of combination frequencies: (i) Below 0.25\,c/d, numerous frequencies are difference frequencies. (ii) Many frequencies above 2.5 c/d can be represented as sum frequencies and in a few cases as harmonics. (iii) Many frequencies between 1.1 and 1.75\,c/d can be portrayed as parents of combination frequencies. The number and fraction of combination frequencies increases steeply with decreasing amplitude and and accuracy of the frequency matching.
Keywords
Cite
@article{arxiv.1708.08413,
title = {BRITEning up the Be Phenomenon},
author = {D. Baade and Th. Rivinius and A. Pigulski and D. Panoglou and A. Carciofi and G. Handler and R. Kuschnig and Ch. Martayan and A. Mehner and A. F. J. Moffat and H. Pablo and A. Popowicz and S. M. Rucinski and G. A. Wade and W. W. Weiss and K. Zwintz},
journal= {arXiv preprint arXiv:1708.08413},
year = {2017}
}
Comments
8 pages, 0 figures, to appear in Proc. 3rd BRITE Science Conference, Lac Taureau, Quebec, Aug. 7-10, 2017 (eds. G.A. Wade et al.); the page footer is wrong (bug in template)