[Physics-grads-open] Physics and Astronomy Student Seminar (PASS)

[Pooyan Goodarzi]

Happening in ~1 hour.

On 10/25/24 9:52 AM, Pooyan Goodarzi wrote:
>
> Hi all,
>
>
> We will have our next PASS talks this Monday with a talk by Michael 
> about star formation and interstellar dust. Please join us on *October 
> 28th (Monday)* at *noon* (from 12:00 pm to 1:00 pm) in the *Nebula 
> Room* (PHYS 3027).
>
>
> *Michael Wozniak, PhD student*
>
> Monday, 12:00 pm, Nebula Room (PHYS 3027)
>
> *Constraining Dust Attenuation and Star-Formation Rates of z~2 
> Star-Forming Galaxies with Paschen and Balmer Line Measurements from 
> JWST and Keck*
> *
> *
> Interstellar dust is a product of star formation that is ubiquitous 
> across star-forming galaxies during cosmic noon, and absorbs and 
> scatters light within the galaxies. Correcting for dust is necessary 
> when inferring several galaxy properties, including star-formation 
> rate and the age of stellar populations. Hydrogen recombination lines 
> are the most common tool for determining reddening and star-formation 
> rates in nebular regions within galaxies. The advent of JWST has 
> enabled new observations of Paschen emission from galaxies at z~2, 
> which is less affected by dust than Balmer emission. For our analysis, 
> we obtain measurements of Balmer and Paschen emission for a sample of 
> 83 galaxies using ground- and space-based observations from MOSFIRE 
> and NIRCam/grism. We compare the nebular reddenings as probed by the 
> Balmer and Paschen emission and find that, once observational effects 
> are accounted for, using Paschen emission can reveal star formation in 
> regions that are optically thick to the Balmer emission alone.
>
>
> If you’re interested in sharing your work as a speaker, please feel 
> free to add your name to the spreadsheet [Google Sheet 
> <https://docs.google.com/spreadsheets/d/1N3ncf43jdB6aHYHhyWmyHMycxDg4_phHZXLkQvviO0o/edit?usp=sharing>].
>
>
> Best,
> Pooyan
> Physics and Astronomy Student Seminar (PASS)
> *
> *
>
>
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