[Astronomy seminar] Astronomy Department Seminar - April 29th Renske Smit

[Astronomy seminar announcements]

On Friday, April 29th Renske Smit (LJMU) will be giving our next seminar 
via Zoom.

*An ALMA view of galaxies in the Epoch of Reionization*

In the past decade hundreds of galaxy candidates have been identified in 
the Epoch of Reionization (EoR), selected from their rest-frame UV 
light. Only a handful of these sources, however, have spectroscopic 
redshift determinations and we have limited understanding of their 
properties. ALMA is currently transforming this field by identifying 
massive ISM reservoirs at z>6.5 from bright [CII] line emission. I will 
describe how we obtained the first spectroscopic confirmations of 
galaxies in the EoR with ALMA, where Lya often remains undetected due to 
the intervening neutral IGM, and how ALMA is now rapidly becoming a 
'redshift machine' for the distant Universe. With the spectroscopic 
redshifts in hand, we are in a position to start probing the physical 
properties of these sources, including their fine structure line ratios, 
dust content and temperature, structural properties and low-resolution 
kinematics. A picture is starting to form of complex structures within 
these galaxies with distinct dusty and UV-bright components which 
exhibit different ISM properties. Moreover, we find evidence that some 
of these galaxies are already rotation-dominated disk-like sources, just 
800 million years after the
Big Bang.

We are trying something new this year with leaving the Zoom call open 
after the formal hour of the seminar is up to allow the speaker, if they 
wish, to chat informally with anyone who is interested.

Thanks
Chris and Carolina

Christopher Usher is inviting you to a scheduled Zoom meeting.

Topic: Astronomy Department Seminar - Renske Smit
Time: Apr 29, 2022 10:30 AM Stockholm

Join Zoom Meeting
https://stockholmuniversity.zoom.us/j/69717398551

Meeting ID: 697 1739 8551
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.su.se/pipermail/seminars-announce.astro-at-su.se/attachments/20220425/2bd55ad6/attachment.html>