ELFT HÍRADÓ

[vidakris AT konkoly.hu]

Szemináriumi meghívó / Invitation to a seminar
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CSFK CSI SZEMINÁRIUM / KONKOLY OBSERVATORY SEMINAR

Date: Jan 22 (Thursday) 14:00


Anna Görgei (Konkoly Observatory): Hungary Long-term monitoring of EK 
Draconis--spot evolution and differential rotation

During the course of two years we monitored EK Draconis (HD 129333) from 
Piszkéstető Observatory, Hungary. This is a relatively bright (7.6 apparent 
magnitude), young (~50 Myr), fast rotating (rotational period is 2.606 days) 
solar analog star, thus it is extensively studied both by photometric and 
spectroscopic methods. Multiple Doppler-images exist of the star (the first 
is from 1998, Strassmeier & Rice) with long timegaps between them. In our 
campaign we reconstructed 13 Doppler images of EK Draconis. We even managed 
to cover the rotational phases 3 times in a 2 week long period and we could 
repeate the same again a few months later. This made observing the short-, 
and long-term spot evolution and calculating the differential rotation 
possible. In this talk I will summarize our work on EK Draconis and the 
recently publised results.
https://konkoly.hu/k-szeminariumok

The seminar will be held live in the Detre hall with audience, but also 
streamed online via Zoom. If you are unable to attend the presentation in 
person, you can join us via this link
https://us06web.zoom.us/j/82806911982?pwd=SVZpT0syQ1J6dHBvSkF4N2dXNEQ0dz09
or the meeting ID: 828 0691 1982 and passcode: 206265



Everyone is welcome!

Krisztián Vida, Mina Ghodsi
organizers
https://konkoly.hu/k-szeminariumok