Sachi Weerasooriya ✨
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sachiwee.bsky.social
Sachi Weerasooriya ✨
@sachiwee.bsky.social
Astrophysicist 💫
Postdoc @Carnegie Observatories

✨Capturing cosmos through art 🌌
Please feel free to use any illustrations posted here. Credit: Sachi Weerasooriya
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New paper alert!!! ✨✨✨✨
✨How do galaxy mergers reshape stellar streams?
We simulated stellar streams through an MW–LMC-like merger

Link: arxiv.org/abs/2505.14792
Checkout our website dancingstreamsinmerginghalos.github.io

#galaxyevolution #stellardynamics #MilkyWay #LMC #galaxysimulations
Reposted by Sachi Weerasooriya ✨
Join us this Thursday, July 17th, for our next installment of Astronomy on Tap Baltimore!
July 14, 2025 at 2:09 PM
Reposted by Sachi Weerasooriya ✨
Delighted that the first paper from our Cy2 JWST program was published today, reporting the discovery of molecular hydrogen in the 3% Solar metallicity galaxy Leo P. This was a very fun project with @karinsandstrom.bsky.social strom.bsky.social and fabulous co-authors! www.nature.com/articles/s41...
Molecular hydrogen in the extremely metal- and dust-poor galaxy Leo P - Nature
Observations from the JWST MIRI-MRS instrument reveal the detection of rotational emission from molecular hydrogen near the only O-type star in the 3% solar metallicity galaxy Leo P, providing confirm...
www.nature.com
June 11, 2025 at 10:20 PM
Reposted by Sachi Weerasooriya ✨
Marveling at the dust in this photographic plate of the Rosette Nebula from the archive @carnegiescience.bsky.social
May 28, 2025 at 5:31 AM
New paper alert!!! ✨✨✨✨
✨How do galaxy mergers reshape stellar streams?
We simulated stellar streams through an MW–LMC-like merger

Link: arxiv.org/abs/2505.14792
Checkout our website dancingstreamsinmerginghalos.github.io

#galaxyevolution #stellardynamics #MilkyWay #LMC #galaxysimulations
May 22, 2025 at 6:35 AM
Centaurus A is a galaxy that is ten times massive than our galaxy. It is located approximately 12 million light years away from us. At the center of it is a supermassive black hole that is actively accreting matter emitting very powerful radiation, also known as an “Active Galactic Nuclei” or AGN
March 13, 2025 at 8:40 AM
This image shows a “stellar stream” ✨. A stellar stream is created when a group of stars is pulled apart as they travel around a galaxy 🌌. These objects give a glimpse into the past showing how galaxies evolve and how gravity shapes the universe. #stellarstreams #astronomy #cosmos #galaxies #space
February 6, 2025 at 3:19 AM