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Hi Everyone,</div>
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I just wanted to remind you all about today's seminar <b>at 15:30 in C4</b> with Dr. Kate Harborne. </div>
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Also, if anyone else would like to join for lunch, please let me know. <br>
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See you all this afternoon!</div>
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Cheers,</div>
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Jesse</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Jesse Golden-Marx (staff)<br>
<b>Sent:</b> Monday, December 8, 2025 10:59 AM<br>
<b>To:</b> Nottingham Astro Group <astro@nottingham.ac.uk><br>
<b>Subject:</b> This Week's Seminar: Dr. Kate Harborne</font>
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Hi Everyone,</div>
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This week our seminar speaker is Dr. Kate Harborne (Durham). Kate did her undergraduate degree at Nottingham and is looking forward to coming back! She'll be arriving on Wednesday and spending Thursday in the department, so if you're interested in meeting
with her, please let me know. She'll be sitting in A110. If anyone is interested in joining for lunch on Wednesday, please let me know. We can sponsor a few postgraduates as always. </div>
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I do want to note that we have adjusted the times slightly to accommodate the School of Physics and Astronomy Holiday Quiz. </div>
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13:00 — Lunch with the seminar speaker</div>
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14:45 — Meeting with the postgraduates in A113</div>
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15:30 — Seminar in C4</div>
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16:30 — Wine and Cheese </div>
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The abstract and title are found below. Hope to see all of you on Wednesday!</div>
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Cheers,</div>
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Jesse, Tutku, and Luke </div>
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<b>Swooping in on the drivers of the spin-age relation using COLIBRE</b></div>
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<i>Observations from the SAMI integral field spectroscopic survey have demonstrated that older galaxies have lower spin and younger galaxies have higher spin, even when the effects of stellar mass and environment are controlled. Possible driver of this “spin-age”
relation include the presence of internal secular heating driven by bars and spiral arms, progenitor bias and the impact of mergers. In the next-generation EAGLE simulation, COLIBRE, we find a population of high-spin, flattened galaxies and evaluate the origin
of the spin-age relation in this new cosmological, hydrodynamical simulation. This presentation will demonstrate the emergence of a realistic spin-age relation in COLIBRE, explore the role of bars, mergers and progenitor bias in driving this relation, and
make comparison to the same observed relation in the SAMI survey. I'll also be demonstrating how consistent comparisons between observations and simulations are important, and advocate for the use of mock observations towards this aim. Using the open-source,
mock-IFU software, SimSpin, I'll show how observational systematics are properly accounted for in this investigation. </i></div>
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<b>Jesse Golden-Marx, Ph.D.</b></div>
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<b>Senior Research Associate</b></div>
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Centre for Astronomy & Particle Theory</div>
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School of Physics & Astronomy</div>
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University of Nottingham</div>
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University Park, Nottingham, UK</div>
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