period analysis for the f component of the ɛ aurigae system using wavelets

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ID: 166170
2008
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Abstract
We present a detailed period analysis for the F-type primary of epsilon Aurigae by means of Fourier and wavelet algorithm. After collecting all available data which have been observed for around 160 years (1842 - 2006) from various international databases and published references we selected only data obtained during outside eclipse among them again. As a result of analysis using CLEANest and WWZ(weighted wavelet Z-transform) several frequencies including two clear periods (67^d and 123^d) were found. In contrast to previous results that the periods vary irregularly it seems that the primary of epsilon Aurigae is double mode or multiperiodic pulsator. The presence of the two periods and their ratio indicates that the high-mass interpretation of the variable could be valid. Also better understanding of the mechanisms driving the light variability of F-type supergiant stars requires continual series of photometric and radial velocity measurements in outside eclipse of this star.
Reference Key
kim2008journalperiod Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Hyouk Kim
Journal the journal of supercritical fluids
Year 2008
DOI
10.5140/JASS.2008.25.1.001
URL
http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2008/v25n1/OJOOBS_2008_v25n1_1.pdf
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