[Physics-grads-open] PASS talk on Wednesday

[Pooyan Goodarzi]

Reminder, happening today at 12:00 pm.

On 10/9/25 6:35 PM, Pooyan Goodarzi wrote:
>
> Hi all,
>
>
> We will have a PASS talk by Michael next *Wednesday, *October 15, at 
> noon.**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 (*from 12:00 to 1:00 pm*) in the *Nebula Room* (PHYS 3027) to 
> hear about his research, give him feedback on slides, and wish him the 
> best for his exam.
>
>
> *Michael Wozniak, PhD Student*
>  Wednesday, 12:00 pm, Nebula Room (PHYS 3027)
>
> *Impact of Galactic Feedback and Dust Geometry on Metallicity and 
> Star-Formation Rates in z~2 Star-Forming Galaxies*
>
> *
> *
>
> 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).
>
> 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.
>
> 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.
>
>
>
> If you’re interested in sharing your work as a speaker, please feel 
> free to add your name to this spreadsheet [Google Sheet 
> <https://docs.google.com/spreadsheets/d/1N3ncf43jdB6aHYHhyWmyHMycxDg4_phHZXLkQvviO0o/edit?usp=sharing>]. 
> Recordings of all the previous talks are available on our website: 
> https://ucrpass.arxiv.social
>
>
> Best,
> Pooyan
> Physics and Astronomy Student Seminar (PASS)
> https://ucrpass.arxiv.social
>
>
>
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