Séminaire Doctoral / Seminar PhD |
| « The high-redshift frontier - Chapter 3: Statistical blobology » |
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Lukas Furtak |
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How did the first stars form? How did the first galaxies assemble and reionize the intergalactic gas around them? All elements heavier than hydrogen and helium, ‘metals’ that play crucial roles in the physics of star-formation, galaxy evolution and ultimately the formation of planets and life upon them, are formed in or by stars. And yet, the exact time and physics of the formation of the very first stars and galaxies, the build-up of stellar mass and chemical enrichment of the Universe, remain fairly mysterious. Rising up to investigate these mysteries, fearless rangers of the space telescopes have taken up their quest in the deep fields, to search for faint high-redshift galaxies and to constrain their physics.
So strap in and buckle up for this third and final ride along the high-redshift frontier! I will tell you about mass functions and what they are good for, gravitational lensing (finally), survey volumina, buffaloes, Charles Darwin's ship and what they have to do both with each other and with high-redshift galaxy physics. With enough statistics, the tiny red blobs can constrain the history of star-formation in the Universe. |
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vendredi 16 avril 2021 - 16:00 Webinaire, Institut d'Astrophysique |
| Page web du séminaire / Seminar's webpage |