V471 Tauri Light Curves and Spot Modelling

Details V471 Tauri Light Curves and Spot Modelling V471 Tauri Light Curves and Spot Modelling

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jsara...1...17m&link_type=abstract

Journal of the Southeastern Association for Research in Astronomy, vol. 1, p. 17-20

Astronomy and Astrophysics

Astronomy

1

Binaries, Binaries: Close, Individual Stars: V471 Tau

Scientific paper

Reduced photoelectric photometry on V471 Tau was recovered from the 1976-1979 observing seasons. The data were used to create light curves of the eclipsing red dwarf plus white dwarf binary. A binary star program was used to model dark spots and calculate times of minima via differential corrections of parameters. Dark spots on the active red dwarf were required for all light curves modeled while subsequent data in the same observing season hint at spot evolution. The O-C values from times of minima loosely follow the trend expected due to the light-travel time of a third body. The large errors in the timings may be due to the paucity of data during eclipses and ellipsoidal as well as spot distortions of the red dwarf outside eclipses.

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