Jeyhan Profile
Jeyhan

@Jeyhan

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Associate Professor at RIT investigating galaxy evolution. Co-lead of @cosmosastro. Passionate about public outreach, science communication, and inclusivity.

Rochester, NY
Joined January 2008
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@Jeyhan
Jeyhan
11 days
RT @HudsonLabRIT: The @RITscience is thrilled to congratulate Sadie Coffin @scoffin_at_you, a fourth-year PhD student in RIT’s Astrophysica….
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@Jeyhan
Jeyhan
2 months
RT @astrofaisst: Good morning!.Quick interview on the release of our @NASAWebb map on COSMOS on @KTLAMorningNews. Check it out: https://t.c….
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@Jeyhan
Jeyhan
2 months
RT @AAS_Office: Last week, NASA and NSF released their FY26 budget requests. We list the detailed impacts on the astronomical sciences in t….
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@Jeyhan
Jeyhan
2 months
RT @SPACEdotcom: Astronomers unveiled the James Webb Space Telescope's largest view yet of the early universe in a richly detailed catalog….
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space.com
"I don't know if the James Webb Space Telescope will ever cover an area of this size again."
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@Jeyhan
Jeyhan
2 months
RT @StartsWithABang: 780,000 galaxies revealed in JWST's largest science operation. With 255 hours of dedicated observing time and a full 0….
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bigthink.com
The COSMOS-Web has just finalized their release of their full field: larger and deeper than any other JWST program. Here's what's inside.
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@Jeyhan
Jeyhan
2 months
RT @RITtigers: The international @nasawebb team, led by @RITscience researchers, has made an unprecedented amount of information available….
rit.edu
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
Jeyhan
2 months
Our release includes an interactive viewer where you can explore the images, display the spectroscopic redshifts (Khostovan et al. 2025) and information from the photometric catalog (including their full SED, photometric redshift, the cutout images in each filter, and the zPDF).
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@Jeyhan
Jeyhan
2 months
And finally, Shuntov et al. present the catalog, including photometric measurements in 37 bands (including #jwst, #hst, #spitzer, and ground-based telescopes), physical parameters (like redshift and stellar mass), and morphological parameters.
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arxiv.org
We present COSMOS2025, the COSMOS-Web catalog of photometry, morphology, photometric redshifts and physical parameters for more than 700,000 galaxies in the Cosmic Evolution Survey (COSMOS) field....
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@Jeyhan
Jeyhan
2 months
Then, Harish et al. describe the MIRI data reduction and present the galaxy number counts.
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@Jeyhan
Jeyhan
2 months
Along with the data, we have released three papers describing the data reduction and catalog process. First, Franco et al. describe the NIRCam data reduction process and challenges for handling a dataset of this size.
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@Jeyhan
Jeyhan
2 months
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:
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@Jeyhan
Jeyhan
3 months
RT @scorfano: Exclusive: NSF stops awarding new grants and funding existing ones
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nature.com
Nature - US science funder also plans to screen grant applications for compliance with ‘agency priorities’.
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@Jeyhan
Jeyhan
4 months
RT @0ok: The image that changed our view of the Universe forever | BBC Global.In 1995, a machine called Hubble peered into a small patch of….
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@Jeyhan
Jeyhan
4 months
RT @SpaceTelescope: Recap some of #NASAWebb’s biggest early-universe discoveries (so far) with the astronomers who are doing the science. h….
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@Jeyhan
Jeyhan
4 months
RT @desisurvey: Check out the new key papers and supporting papers available here:
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@Jeyhan
Jeyhan
7 months
My PhD student @astrohanp 's first paper on the machine learning tool he developed to automatically measure redshifts directly from galaxy spectra, SpecPT. The results are have surpassed my expectations and I can't wait until we extend this to other datasets! Check out the paper!.
@astrohanp
Rohan Pattnaik
7 months
Excited to share our paper on SpecPT is now on arXiv!! . Using DESI data, we built a transformer model for galaxy spectra, achieving impressive results in spectral reconstruction & redshift prediction. @AcademicChatter.#AcademicChatter #phdchat
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@Jeyhan
Jeyhan
9 months
RT @JorgZavala: About a year ago, we pointed the JWST telescope (@JWSTObserver) at what we believed might be one of the most distant galaxi….
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@Jeyhan
Jeyhan
9 months
RT @SheerPriya: In case you happen to be in New Haven this Sunday at 4 pm, do come to the Public talk by @janerrigby the opening event of t….
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@Jeyhan
Jeyhan
9 months
RT @astrogrant: The NASA Astrophysics Advisory Committee's letter to NASA Leadership from the Summer meeting has now been posted, including….
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