학술논문
'20-MIN' OSCILLATIONS OF THE CATACLYSMIC VARIABLE TT ARI
Document Type
article
Author
Source
Odessa Astronomical Publications, Vol 7, Iss 1, Pp 132-135 (2017)
Subject
Language
English
ISSN
1810-4215
Abstract
Results based on 16 nights in B, 3 in UBV and 1 in UBVRI are presented. Periodograms for detrended nightly runs showed significant peaks at different frequences from 28 to 103 c/d. Most prominent of them correspond to the best fit periods 23.7, 15.2, 27.5 and 51.6 min. Characteristics of the peaks are listed in tables. It seems that in TT Ari we observe contributions of several mechanisms of instability with similar time scales rather than a single QPO with secular decrease of the cycle.