Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...372..922l&link_type=abstract
Astronomy and Astrophysics, v.372, p.922-924 (2001)
Astronomy and Astrophysics
Astrophysics
6
Stars: Individual: Df Tau, Stars: Pre-Main Sequence, Stars: Variables, Stars: Binary, Stars: Circumstellar Matter, Accretion
Scientific paper
We constructed a DF Tau historical lightcurve to analyze the character of stellar variability from 1900 to 2000. This time interval exceeds the orbital period P =~ 80 yrs of the double system. At least two sections of enhanced photometric activity are present in the lightcurve, with the time interval between them being close to P/2. They correspond to the sections of the DF Tau companion orbit intermediate between apo- and periastron. A decrease in stellar activity occured near the last periastron epoch. We conclude that long-term variations of DF Tau activity are the result of modulation of primary circumstellar disc accretion rate by orbital motion of the companion. We predict that DF Tau activity will increase significantly in the near future.
Ezhkova O. V.
Grankin Konstantin N.
Lamzin Sergei A.
Melnikov Stanislav Yu.
No associations
LandOfFree
A possible dependence of DF Tauri's photometric activity on the relative orbital positions of the binary components does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A possible dependence of DF Tauri's photometric activity on the relative orbital positions of the binary components, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A possible dependence of DF Tauri's photometric activity on the relative orbital positions of the binary components will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1580075