ELFT HÍRADÓ

[vidakris AT konkoly.hu]

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

Date: Mar 28 (Thursday) 14:00


András Haris-Kiss (University of Helsinki):
Detecting small starspots with the transit mapping method


Transit mapping is an effective method for detecting small starspots that may 
go unnoticed with other techniques used to study active stars' surfaces. The 
Kepler and TESS space telescopes provide high-precision transit light curves 
for a large number of stars. The accuracy of these observations allows us to 
identify spot occultations that occur during planetary transits. We conduct a 
systematic search for spot-transiting events using a Markov Chain Monte Carlo 
(MCMC) approach on all 60s and 120s cadence Kepler and TESS light curves of 
late-type stars with known transiting exoplanets. A more comprehensive 
occurrence statistics for small spots are presented for the Kepler and TESS 
sample. The geometric properties of the identified spots can be used to 
constrain the parameters of the stellar dynamo on these planet-hosting stars, 
which has implications for the atmospheric evolution and habitability of 
their planets.



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, Ramon Brasser
organizers
https://konkoly.hu/k-szeminariumok