Gründliche Untersuchung der unter dem Nahmen des T. T. Hn. Johann Friderich Rübel ... in dieser Tagen im Druck erschienenen Aufrichtigen und unpartheyischen Prüfung des Dreyfachen Beweises des D. Joh. Helfrich Sagittarii ...

dargethan von Joseph Nepomuc Hobel

Joh. Christfriedi Sagittarii, S.S. Theolog. Doctoris, Historici ac Professoris Ienensis celeberrimi, Selectiores Dissertationes : Studiosis Theologiae pariter ac Iuris maximam utilitatem in Moralibus, Politicis ac Historia Ecclesiastica praebentes.

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Ad Arnoldi Clapmarii De arcanis rerumpublicarum libros sex, Joh. Christfriedi Sagittarii ..., Annotationes : ante annos XIV. in inclytâ Salanâ privatim propositæ ...

Includes indexes.

A Time-Series Analysis of the H alpha Emission Line in V3885 Sagitarii

Flickering is a phenomenon related to mass accretion observed among many classes of astrophysical objects. In this paper we present a study of flickering emission lines and the continuum of the cataclysmic variable V3885 Sgr. The flickering behavior was first analyzed through statistical analysis and the power spectra of lightcurves. Autocorrelation techniques were then employed to estimate the flickering timescale of flares. A cross-correlation study between the line and its underlying continuum variability is presented. The cross-correlation between the photometric and spectroscopic data is also discussed. Periodograms, calculated using emission-line data, show a behavior that is similar to those obtained from photometric datasets found in the literature, with a plateau at lower frequencies and a power-law at higher frequencies. The power-law index is consistent with stochastic events. The cross-correlation study indicates the presence of a correlation between the variability on Ha and its underlying continuum. Flickering timescales derived from the photometric data were estimated to be 25 min for two lightcurves and 10 min for one of them. The average timescales of the line flickering is 40 min, while for its underlying continuum it drops to 20 min.