Analysis of the Irregular Pulsations of AC Her

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dc.creatorKollath, Z.
dc.creatorBuchler, J. R.
dc.creatorSerre, T.
dc.creatorMattei, J.
dc.date1997-07-08
dc.date.accessioned2026-07-07T09:07:30Z
dc.date.available2026-07-07T09:07:30Z
dc.descriptionThe AAVSO lightcurve data of the irregularly pulsating star AC Herculis of the RV Tau class are analysed. The lightcurve is shown to be incompatible with a periodic, or even multiperiodic pulsation, even if allowance is made for evolution. Instead the best explanation is that the irregularly alternating cycles are a manifestation of low dimensional chaos. The lightcurve is found to be generated by a 3 or 4 dimensional dynamics -- 3 or 4 first order ODEs. The (Lyapunov) fractal dimension of the underlying dynamic attractor is computed to be d_L ~ 2.2, smaller than the value of d_L ~ 3.1 found for R Sct.
dc.descriptionAstronomy & Astrophysics (submitted, June 1997) -- 8 pages. e-mail: kollath@buda.konkoly.hu, buchler@phys.ufl.edu
dc.identifierhttps://arxiv.org/abs/astro-ph/9707099
dc.identifierhttp://arxiv.org/abs/astro-ph/9707099
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/150394
dc.subjectAstrophysics
dc.subjectChaotic Dynamics
dc.titleAnalysis of the Irregular Pulsations of AC Her
dc.typetext

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