Vivian U
banner
justtheletteru.bsky.social
Vivian U
@justtheletteru.bsky.social
Associate Scientist at Caltech/IPAC studying black holes and galaxy mergers with a nerdy sense of humor. Roman Proposal Lead. < 15 minutes of fame from PBS NOVA showcasing JWST science. TEDxMB 2024 speaker. Views are my own.

🌐 https://vivian-u.github.io/
Ooh, a loaded question 🤣 I assume it's fine for me to answer, even if the answer is a bit convoluted: The outflow is not sufficient to outpace star formation in the galaxy, but is enough to substantially reduce the gas depletion timescale. Is this satisfactory before the paper comes out? :)
November 6, 2025 at 9:01 PM
Lastly (and not in line with previous happy news; just a PSA): the release of the Roman Call for Proposals is delayed due to the government shutdown. A new release date will be announced after the government reopens. Follow @nancyromansci.bsky.social for the latest news! 3/3
November 6, 2025 at 6:58 PM
Also, ESO fellow Yiqing Song just submitted her paper on multi-phase outflows in a dusty galaxy with a first detection of an obscured AGN. It's a very cool system showcasing meticulously detailed analyses on fantastic data sets -- stay tuned. How did I get so lucky to work with such talents! 2/3
November 6, 2025 at 6:58 PM
That totally would’ve gotten me, and I don’t even live there!
October 9, 2025 at 5:05 AM
A key finding: AGN dominate at bright flux densities while MS galaxies take over at the faint end. The paper also provides new diagnostic color-color diagrams to help interpret current and future JWST surveys. Big thanks to the NASA ADSPS grant that made the FIRESIDE project possible! 🎉 3/3
September 22, 2025 at 6:01 PM
This paper presents a major update to the SIDES simulation framework, successfully modeling the large population of dust-obscured galaxies and AGN discovered by JWST/MIRI. We reproduce observed source counts and z distributions. 2/
September 22, 2025 at 6:01 PM
I was grateful for the opportunity!
September 5, 2025 at 5:34 PM
Whaaaaat

So that's just NSF? Is NASA following suit?
August 22, 2025 at 12:06 AM
The silver lining is that there's a solar eclipse in Oz during that time, so there's a perfect excuse to escape the city then...
August 6, 2025 at 11:35 AM