ELFT HÍRADÓ

[vidakris AT konkoly.hu]

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

Date: Dec 01, 2022 (Thursday) 14:00


Attila Moór (Konkoly Observatory, CSFK, Hungary):
New hypotheses for the origin of extreme debris disks


Extreme debris disks (EDDs) are rare systems with unusually large amounts of 
warm dust that are thought to stem from recent giant collisions between 
planetary embryos during the final phases of terrestrial planet growth. In my 
talk I will report on identification and characterization of a new sample of 
EDDs - all hosted by Sun-like stars - that triples the number of known 
objects of this type. While rocky planet formation models predict that the 
majority of giant collisions occur in the first 100 Myr, we found that the 
sample of EDDs is dominated by systems older than this age. This may indicate 
either that the era of giant impacts is longer than we think, or that some 
other mechanism(s) can also produce EDDs. Regarding this last point, I will 
outline some alternative models.


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/szeminar/szeminarium.shtml