ELFT HÍRADÓ

[vidakris AT konkoly.hu]

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

Date: May 28 (Tuesday) 14:00


Manuel Scherf
Austrian Academy of Sciences, TU Graz/Space Research Institute, Graz; Austria

The evolution and prevalence of Earth-like Habitats in the Galaxy

The existence of Earth-like Habitats, that is, temperate rocky exoplanets 
hosting Earth-like N2-O2-dominated atmospheres with minor amounts of CO2, 
depends on certain astrophysical, geophysical, and, potentially, biochemical 
criteria that must be met to allow for their evolution and environmental 
stability. One essential factor for the emergence and evolution of Earth-like 
atmospheres is a planet's host star. Its radiation and plasma environment may 
affect atmospheric stability to such an extent that it can even render its 
existence unlikely. Furthermore, microbial life may be another parameter 
needed to allow for the simultaneous existence of atmospheric O2 and N2 over 
geological timescales, making an N2-O2-dominated atmosphere a potential sign 
of life to be present on such a planet. I will address these and further 
important parameters relevant to the evolution of Earth-like atmospheres. 
First, I focus on the terrestrial planets in our Solar System and then apply 
our understanding 
 of their atmospheric evolution to assess the prevalence of Earth-like 
Habitats in the Galaxy and around stars of different spectral types.


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