Jeyhan Kartaltepe
@jeyhan.bsky.social
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).
Reposted by Jeyhan Kartaltepe
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.
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.
www.rit.edu
June 5, 2025 at 3:43 PM
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.
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
June 5, 2025 at 3:34 PM
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
Reposted by Jeyhan Kartaltepe
Recap some of #NASAWebb’s biggest early-universe discoveries (so far) with the astronomers who are doing the science. 🔭 🧪
The James Webb Space Telescope Reveals the Early Universe
YouTube video by Space Telescope Science Institute
youtu.be
March 28, 2025 at 2:00 PM
Recap some of #NASAWebb’s biggest early-universe discoveries (so far) with the astronomers who are doing the science. 🔭 🧪
Reposted by Jeyhan Kartaltepe
Ali Ahmad Khostovan, et al.: COSMOS Spectroscopic Redshift Compilation (First Data Release): 165k Redshifts Encompassing Two Decades of Spectroscopy https://arxiv.org/abs/2503.00120 https://arxiv.org/pdf/2503.00120 https://arxiv.org/html/2503.00120
March 4, 2025 at 6:11 AM
Ali Ahmad Khostovan, et al.: COSMOS Spectroscopic Redshift Compilation (First Data Release): 165k Redshifts Encompassing Two Decades of Spectroscopy https://arxiv.org/abs/2503.00120 https://arxiv.org/pdf/2503.00120 https://arxiv.org/html/2503.00120
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
arxiv.org/abs/2501.01070
January 16, 2025 at 7:31 PM
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
arxiv.org/abs/2501.01070
Reposted by Jeyhan Kartaltepe
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! https://www.washingtonpost.com/science/2023/07/12/jwst-new-picture-first-year/
July 12, 2023 at 12:20 PM
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! https://www.washingtonpost.com/science/2023/07/12/jwst-new-picture-first-year/
Reposted by Jeyhan Kartaltepe
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!
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 ...
www.youtube.com
July 10, 2023 at 3:31 PM
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!
Ok, I do love that with very little effort, I have a feed for Cat pics!
July 6, 2023 at 10:15 PM
Ok, I do love that with very little effort, I have a feed for Cat pics!
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
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,...
www.nasa.gov
July 6, 2023 at 8:22 PM
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