Observational Astrophysics Seminar: New insights on the properties of the first generation of galaxies from the JWST
Monday 26 June 2023, 3:00pm to 4:00pm
Venue
C36 Physics and MS TeamsOpen to
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Registration not required - just turn upEvent Details
New insights on the properties of the first generation of galaxies from the JWST by Dr Nicolas Laporte
Speaker: Dr Nicolas Laporte
Room: C36
Date: Monday the 26th of June
Time: 15:00 to 16:00
Please try to arrive at or before 15:00.
Post Talks Refreshments: C36
Title: New insights on the properties of the first generation of galaxies from the JWST
Abstract: One of the most exciting challenges in modern extragalactic astronomy is to understand how the first galaxies emerged from a dark Universe and how their physical properties evolved over time. Significant advances have been made in the last decade, thanks to the introduction of new telescopes and instruments such as ALMA, MOSFIRE, MUSE, and JWST, along with deep and wide surveys like Frontier Fields, UltraVISTA, and CANDELS. In the span of 10 years, the observational frontiers of the Universe have expanded from z9(2012) to z17 (2022). The number of spectroscopically confirmed galaxies with z>6 has surged from a dozen (2012) to several hundreds (2023), including around a dozen at z>9! By combining data obtained from multiple instruments across a broad range of wavelengths, it is now possible to determine key physical properties of individual high-z galaxies, such as their age, escape fraction, size, radiation field, and metallicity. Through the study of the entire population of very high-redshift galaxies, we can also infer when the first generation of galaxies formed during the early Universe (known as the Cosmic Dawn) and their contribution to the Epoch of Reionisation. In this presentation, I will describe some of the latest findings regarding the physical properties of the first generation of galaxies.
If you are planning on joining online, please join at least 5 mins early to check for technical issues.
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Contact Details
| Name | Matthew Thorne |