[Astronomy seminar] Astronomy Department Seminar - March 25th Adélaïde Claeyssens

[Astronomy seminar announcements]

On Friday, March 25th at 10:30 Adélaïde Claeyssens (Stockholm 
University) will be giving our next seminar.

*The properties of lensed high redshift Lyman-alpha emitters*

The circumgalactic medium (CGM) is closely linked to galaxy formation 
and evolution, but difficult to observe in emission at high redshift. I 
will present some first results from the Lensed Lyman-Alpha MUSE Arcs 
Sample (LLAMAS), a large sample of >600 lensed Lyman-alpha emitters 
(LAEs) observed with MUSE and HST towards massive galaxy clusters. 
Thanks to the strong lensing magnification and associated gain in 
spatial resolution, we can detect and characterize very faint galaxies, 
and the resolved properties of line emission from the circumgalactic 
medium (CGM). With such a statistical sample we can characterize 
Lyman-alpha haloes as small as 0.5 kpc (correcting for the lensing 
effect) and measure their intrinsic morphological properties such as 
extent, ellipticity, as well as the UV morphology and spatial offsets 
between the UV continuum and the Lyman-alpha emission. LLAMAS provides 
unique measurements on such properties at this redshift, beyond the 
reach of non-lensed deep fields, and are therefore crucial for 
understanding the CGM properties at z>3.

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 - Adélaïde Claeyssens
Time: Mar 25, 2022 10:30 AM Stockholm

Join Zoom Meeting
https://stockholmuniversity.zoom.us/j/66528043554?pwd=aWNlUGlOZCtCc01CdEpkR3FtMFlLdz09 


Meeting ID: 665 2804 3554
Passcode: ICiLmiNGUi
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