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<p>On Friday, April 29th Renske Smit (LJMU) will be giving our next
seminar via Zoom.<br>
</p>
<p><b>An ALMA view of galaxies in the Epoch of Reionization</b><br>
<br>
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<br>
Big Bang.</p>
<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 - Renske Smit
<br>
Time: Apr 29, 2022 10:30 AM Stockholm
<br>
<br>
Join Zoom Meeting
<br>
<a class="moz-txt-link-freetext" href="https://stockholmuniversity.zoom.us/j/69717398551">https://stockholmuniversity.zoom.us/j/69717398551</a>
<br>
<br>
Meeting ID: 697 1739 8551
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