Photometric search for an activity cycle in the young solar analogue EK Draconis

Details Photometric search for an activity cycle in the young solar analogue EK Draconis Photometric search for an activity cycle in the young solar analogue EK Draconis

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.506..841f&link_type=abstract

In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9 - 14 September 2002, Prague, Cze

Other

Stars: Activity, Stars: Individual (Hd 129333 = Ek Dra), Stars: Late-Type, Stars: Rotation, Stars: Variables: Other

Scientific paper

We have performed a long-term photometry of the young solar analogue EK Draconis (HD 129333) using 1030 blue-sensitive Sky-Patrol plates taken at Sonneberg Observatory from 1958 onwards. A secular dimming of 0.0057±0.0008 mag/y beginning around 1975 has been found. Hence, the recent trend first observed with Automatic Photoelectric Telescopes (APTs) is confirmed and traced back to the mid-seventies.

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