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<p>Hi all,</p>
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<p>We will have a PASS talk by Michael next <b>Wednesday, </b>October
15, at noon.<b> </b>Please note that this is different from our
usual weekly time. Michael's talk about feedback and dust in
galaxies will be a dry run of his advance to candidacy exam later
next week. Please join us at noon (<b>from 12:00 to 1:00 pm</b>)
in the <b>Nebula Room</b> (PHYS 3027) to hear about his research,
give him feedback on slides, and wish him the best for his exam. </p>
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</p>
<p align="center"><b>Michael Wozniak, PhD Student</b><br>
Wednesday, 12:00 pm, Nebula Room (PHYS 3027)</p>
<p align="center"><b>Impact of Galactic Feedback and Dust Geometry
on Metallicity and Star-Formation Rates in z~2 Star-Forming
Galaxies</b></p>
<p align="center"><b><br>
</b></p>
<div align="center">Dust production and baryon cycling are critical
components of galaxy evolution. Galaxies accrete cold gas, convert
the gas into stars, and eject both dust and metal-rich gas into
the interstellar medium. Within this cycle, galactic outflows
regulate star formation and redistribute metals, while dust
obscuration shapes how we measure star-formation rates (SFRs).</div>
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<div align="center">In the first part of the talk, I will discuss
the role of galactic outflows in regulating metallicity. Using
rest-frame optical and UV spectroscopy, we investigate how outflow
velocities correlate with deviations from the fundamental
metallicity relation (FMR), and find tentative evidence that
faster outflows are associated with larger deviations below
FMR-based metallicities.</div>
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<div align="center">In the second part, I will compare nebular
reddening and SFRs derived from Balmer and Paschen lines. On
average, Paschen-based measurements agree with Balmer values, but
in galaxies with patchy dust geometries, the Paschen lines reveal
star formation in the most heavily dust-obscured regions that
Balmer lines alone fail to measure.</div>
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<div
id="m_-7314571423100097885m_-3414541767872711075m_9215603032040371864m_-1672972118947443868gmail-:1f4">
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<div dir="ltr">If you’re interested in sharing your work as a
speaker, please feel free to add your name to this spreadsheet
[<a
href="https://docs.google.com/spreadsheets/d/1N3ncf43jdB6aHYHhyWmyHMycxDg4_phHZXLkQvviO0o/edit?usp=sharing"
target="_blank">Google Sheet</a>]. Recordings of all the
previous talks are available on our website: <a
href="https://ucrpass.arxiv.social/" target="_blank"
class="moz-txt-link-freetext">https://ucrpass.arxiv.social</a>
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Best,<br>
Pooyan<br>
Physics and Astronomy Student Seminar (<span><span>PASS</span></span>)
<br>
<a href="https://ucrpass.arxiv.social/" target="_blank"
class="moz-txt-link-freetext">https://ucrpass.arxiv.social</a></div>
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