ELFT HÍRADÓ

[vidakris AT konkoly.hu]

Szemináriumi meghívó / Invitation to a seminar
----------------------------------------------

CSFK CSI SZEMINÁRIUM / KONKOLY OBSERVATORY SEMINAR

Date: May 15 (Thursday) 14:00


Szabolcs Mészáros (ELTE Gothard Asztrofizikai Obszervatórium; Hungary): 
The chemical mapping of the Milky Way

In this talk we give an overview of the work of the MTA-ELTE Lendulet Milky 
Way Research group within the Sloan Digital Sky Survey (SDSS).  The SDSS-V 
Milky Way Mapper (MWM) survey will create the largest chemical map of our 
Galaxy by observing 5 million stars by 2027. MWM has observed 2 million stars 
to date, about 1 million will be made public in the first data release (DR19) 
of MWM in the Summer of 2025. Our group was leading the 
calibration/validation effort within SDSS for this data release. 
Using private DR19 data, we have modelled the evolution of 15 elements (Fe, 
Mg, O, Si, S, Ca, Ti, Na, Al, K, V, Cr, Mn, Co, Ni) in the entire Milky Way, 
but also divided the Galaxy into six regions based on the distance from the 
galactic center and modeled each of them separately. We successfully 
replicated the observed chemical makeup of the Milky Way by assuming two gas 
inflow events, one at the formation of our Galaxy and one roughly 4 billion 
years later, which was likely a merger event with another galaxy. 
Our group is also leading several projects related to theoretical 
spectroscopy, including the calculation of the synthetic spectrum database 
used for the flux calibration of the James Webb Space Telescope.


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