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Morishita Lab
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A lab that uses telescope observations to explore how galaxies formed in the early universe.
AboutAbout the lab
Decoding early-universe galaxies through observation
The Morishita Lab studies the properties of galaxies that formed in the era from a few hundred million to a few billion years after the universe began.
It does this using observational data from the Hubble Space Telescope and the James Webb Space Telescope (JWST).
Its research themes are galaxies in the epoch of reionization, the chemical evolution of galaxies, the structural evolution of galaxies, and large-scale structure and protoclusters in the distant universe.
The lab is also involved in processing grism and prism data from the Roman Space Telescope.
Key terms
- Cosmic reionization
- The phenomenon in which hydrogen gas that was neutral in the early universe was ionized again by light from celestial objects. The lab studies galaxies from that era.
- Protocluster
- A region where galaxies have begun to gather, at a stage before a galaxy cluster has formed.
- JWST
- Abbreviation for the James Webb Space Telescope, a space telescope that observes the distant universe in infrared.
- Chemical evolution
- The gradual increase of heavy elements such as oxygen inside a galaxy as stars are born and die.
ResearchResearch themes
The lab studies the formation and evolution of galaxies in the early universe using observational data from the Hubble Space Telescope and JWST. Its research themes include galaxies in the epoch of reionization, chemical evolution, structural evolution, and protoclusters.
*Illustrative imageDiversity of Oxygen Abundance in Early Galaxies
The lab has published a paper that analyzed emission lines known as auroral lines in JWST observational data and showed that oxygen abundance varies from galaxy to galaxy among early galaxies.
*Illustrative imageStar Formation and Size in Early Galaxies
The lab has published a paper that analyzed the sizes of many distant galaxies in JWST observational data and showed that star formation is active in small regions less than 1 kiloparsec across.
*Illustrative imageDiscovery of the Most Distant Protocluster
In April 2023, it was announced that the most distant protocluster known had been found in data from the GLASS-JWST program. NASA and Caltech issued press releases on this discovery.
*Illustrative imageSearch for Bright Galaxies in the Epoch of Reionization
The Superborg project uses Hubble Space Telescope archival data to systematically search for bright galaxies and quasars in the epoch of reionization.
MembersFaculty
- Associate ProfessorTakahiro Morishita
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “NASA-HS201427a-HubbleUltraDeepField” NASA, ESA, H. Teplitz and M. Rafelski (IPAC/Caltech), A. Koekemoer (STScI), R. Windhorst (Arizona State University), and Z. Levay (STScI) / Public domain (cropped)
- Diversity of Oxygen Abundance in Early Galaxies: “The Phantom Galaxy Across the Spectrum” NASA's James Webb Space Telescope / CC BY 2.0 (cropped)
- Star Formation and Size in Early Galaxies: “Most-Distant Galaxy Candidates in the Hubble Ultra Deep Field (opo0428b)” NASA, ESA, R. Windhorst (Arizona State University) and H. Yan (Spitzer Science Center, Caltech) / Public domain (cropped)
- Discovery of the Most Distant Protocluster: “Webb's First Deep Field” NASA, ESA, CSA, and STScI / Public domain (cropped)
- Search for Bright Galaxies in the Epoch of Reionization: “Hubble 2009 close-up” NASA / Public domain (cropped)
- Related lab (Planetary Atmospheric Physics Lab): “Mars atmosphere” NASA / Public domain (cropped)
- Related lab (Tomida Lab): “HD 163296 protoplanetary disk by ALMA (16CB25B)” ALMA (ESO/NAOJ/NRAO); A. Isella; B. Saxton (NRAO/AUI/NSF) / CC BY 4.0 (cropped)
- Related lab (Murayama Lab): “Messier83 - Heic1403a” Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA) Acknowledgement: William Blair (Johns Hopkins University) / Public domain (cropped)
- Related lab (Physical Oceanography Lab): “Anton Dohrn am Liegeplatz in Bremerhaven” Manfred Stein / CC BY-SA 3.0 de (cropped)
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