Periodic Variability of the T Tauri Star DI Cephei

Details Periodic Variability of the T Tauri Star DI Cephei Periodic Variability of the T Tauri Star DI Cephei

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004arep...48..393i&link_type=abstract

Astronomy Reports, vol. 48, Issue 5, p.393-398

Astronomy and Astrophysics

Astronomy

Scientific paper

Original spectroscopic and photometric observations are used together with data from the literature to compile a master light curve for DI Cep and to analyze individual data series for periodicity. The spectroscopic data reveal the period P=9.24d. Data from different authors show the nine-day quasi-periodicity in the brightness variations fairly reliably, although the period cannot be derived from the entire master set of photometric data. The period P=18.28d is also derived from the V brightnesses. We find variations of the zero epoch of the nine-day period, possibly due to the changing location of an accretion-disk hot spot.

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