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Reminder of this today at 1pm!</div>
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Joe</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Joseph Butler <ppxjb4@exmail.nottingham.ac.uk><br>
<b>Sent:</b> Tuesday, August 5, 2025 3:15:22 PM<br>
<b>To:</b> astro@nottingham.ac.uk <astro@nottingham.ac.uk><br>
<b>Subject:</b> Lunch Talk - 7/8/25</font>
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<div style="line-break:after-white-space"><span style="color:rgb(0,0,0)">Hi everyone,</span><br>
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<span style="color:rgb(0,0,0)">This week¡¯s lunch talk will be given by Emmet Golden-Marx, who is visiting from </span><span style="color:rgb(0,0,0)">INAF (Padova, Italy). This will at the usual time of 1pm Thursday in A113. Title and abstract are below.</span>
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</span><b>Title:</b> Morphological Transformations in Protocluster Galaxies: Understanding the Role of the Protocluster Environment on Galaxy Morphology at Cosmic Noon<span></span></div>
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<b>Abstract:</b> As cluster environments evolve, galaxy populations transform via star formation quenching, yielding the build-up of the red sequence and the morphological transformation of late-type galaxies into early-type galaxies, which creates the morphology-density
relation. However, it is uncertain if the morphological transformation precedes or is co-eval with star formation quenching. In this lunch talk, I will present a study of two protoclusters from the Mapping the Most Massive Overdensities Through Hydrogen (MAMMOTH)
Survey. These z ~ 2.23 protoclusters (BOSS1244 & BOSS1542) are characterized by large populations of H¨» emitters (HAEs) observed with HST WFC3 F160W, allowing us to map the early morphological transformation of star-forming HAEs in protoclusters and determine
if these galaxies show signs of early morphological pre-processing. We find a remarkable similarity between the morphology of field and protocluster galaxies, pointing to little evidence for environmentally driven morphological transformations. However, despite
the lack of an excess of early-type galaxies, we also find an enhancement of early-type galaxies near the spectroscopically confirmed quiescent BCG in BOSS1244 and identify a population of potentially merging galaxies in both protoclusters, each of which could
point to the future build-up of early-type galaxies within these structures in the future. Additionally, I will introduce early work further studying the build-up of star forming populations of massive protocluster galaxies in the Charting Cluster Construction
with VUDS and ORELSE (C3VO) survey and the role of clumpy galaxies in these systems, as well as a new study of lensed protocluster galaxies with the goal of studying the most highly resolved clumps in protocluster environments to further understand environmental
impacts on star formation. </p>
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Cheers,<br>
Joe</div>
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