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Jeyhan Kartaltepe

@jeyhan.bsky.social
413 followers 170 following 13 posts

Associate Professor at RIT investigating galaxy evolution. Co-lead of the COSMOS Collaboration. Passionate about public outreach, science communication, and inclusivity. Currently working on all things JWST (especially, COSMOS-Web, CEERS, NGDEEP, PRIMER).

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Jeyhan Kartaltepe @jeyhan.bsky.social · 05/06/2025
space.com
James Webb Space Telescope reveals largest-ever panorama of the early universe
"I don't know if the James Webb Space Telescope will ever cover an area of this size again."
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Reposted by Jeyhan Kartaltepe
Rochester Institute of Technology @rittigers.bsky.social · 05/06/2025
The international NASA's James Webb Space Telescope COSMOS-Web team, led by @ritscience.bsky.social researchers, has made an unprecedented amount of information available for future discovery! Explore the largest view deep into the #universe through a searchable catalog now available to the public.
rit.edu
COSMOS-Web opens window into universe for scientists and citizens
Supported by RIT’s Jeyhan Kartaltepe, COSMOS-Web—the largest JWST Cycle 1 observation program— has made its full data set publicly available.
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Jeyhan Kartaltepe @jeyhan.bsky.social · 05/06/2025
It's finally here! We've just released all of our COSMOS-Web images and catalogs, along with an interactive viewer where you can explore the data! Check it out at: cosmos2025.iap.fr
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Reposted by Jeyhan Kartaltepe
Space Telescope Science Institute @stsci.edu · 28/03/2025
Recap some of #NASAWebb’s biggest early-universe discoveries (so far) with the astronomers who are doing the science. 🔭 🧪
youtu.be
The James Webb Space Telescope Reveals the Early Universe
YouTube video by Space Telescope Science Institute
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Reposted by Jeyhan Kartaltepe
arXiv astro-ph.GA Astrophysics of Galaxies @astrophga-bot.bsky.social · 04/03/2025
Ali Ahmad Khostovan, et al.: COSMOS Spectroscopic Redshift Compilation (First Data Release): 165k Redshifts Encompassing Two Decades of Spectroscopy arxiv.org/abs/2503.00120 arxiv.org/pdf/2503.00120 arxiv.org/html/2503.00120
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Jeyhan Kartaltepe @jeyhan.bsky.social · 16/01/2025
My PhD student Rohan Pattnaik's first paper on the machine learning tool he developed to automatically measure redshifts directly from galaxy spectra, SpecPT, is now out. The results are have surpassed my expectations and I can't wait until we extend this to other datasets! arxiv.org/abs/2501.01070
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Reposted by Jeyhan Kartaltepe
Sarah Kendrew @sarahkendrew.bsky.social · 12/07/2023
Here’s Joel Achenbach for the Washington Post on JWST’s first year with nice quotes from @janerigby.bsky.social, @jeyhan.bsky.social, @saturnswings.bsky.social and many more! www.washingtonpost.com/science/2023…
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Reposted by Jeyhan Kartaltepe
Dr. Rebecca Larson @saturnswings.bsky.social · 10/07/2023
Second galaxy to the right and straight on until cosmic dawn! This video takes you on a journey through our CEERS JWST images and cosmic history. Every second we travel 200 Million lightyears into the past on our way to Maisie's Galaxy which existed ~13.4 Billion years ago!
youtube.com
CEERS: Flight to Maisie's Galaxy
This 3D visualization portrays about 5,000 galaxies within a small portion of the CEERS (Cosmic Evolution Early Release Science) Survey, which gathered data ...
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Jeyhan Kartaltepe @jeyhan.bsky.social · 06/07/2023
Ok, I do love that with very little effort, I have a feed for Cat pics!
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Jeyhan Kartaltepe @jeyhan.bsky.social · 06/07/2023
First post! Let's kick things off with our #JWST NASA press release today on high redshift galaxies in the CEERS Survey, and highlighting work from @saturnswings.bsky.social
nasa.gov
Webb Detects Most Distant Active Supermassive Black Hole to Date
Researchers have discovered the most distant active supermassive black hole to date with the James Webb Space Telescope. The galaxy, CEERS 1019, existed just over 570 million years after the big bang,...
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