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<p>Reminder, Adélaïde's talk is in half an hour</p>
<p>C<br>
</p>
<div class="moz-cite-prefix">On 21/03/2022 10:55, Chris Usher wrote:<br>
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<p>On Friday, March 25th at 10:30 Adélaïde Claeyssens (Stockholm
University) will be giving our next seminar.</p>
<p><b>The properties of lensed high redshift Lyman-alpha emitters</b></p>
<p>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.<br>
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<div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode:
space; line-break: after-white-space;" class="">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.</div>
<div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode:
space; line-break: after-white-space;" class=""><br>
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<div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode:
space; line-break: after-white-space;" class="">Thanks<br>
Chris and Carolina</div>
<div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode:
space; line-break: after-white-space;" class=""><br>
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<div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode:
space; line-break: after-white-space;" class="">Christopher
Usher is inviting you to a scheduled Zoom meeting. <br>
<br>
Topic: Astronomy Department Seminar - Adélaïde Claeyssens <br>
Time: Mar 25, 2022 10:30 AM Stockholm <br>
<br>
Join Zoom Meeting <br>
<a class="moz-txt-link-freetext"
href="https://stockholmuniversity.zoom.us/j/66528043554?pwd=aWNlUGlOZCtCc01CdEpkR3FtMFlLdz09"
moz-do-not-send="true">https://stockholmuniversity.zoom.us/j/66528043554?pwd=aWNlUGlOZCtCc01CdEpkR3FtMFlLdz09</a>
<br>
<br>
Meeting ID: 665 2804 3554 <br>
Passcode: ICiLmiNGUi </div>
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