By Kavli Institute for the Physics and Mathematics of the Universe
February 24, 2023
An international team of researchers, including those from the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU), have published a new study in The
One study, led by Kavli IPMU JSPS Fellow Lilan Yang, and including Project Researcher Xuheng Ding, used multiband NIRCAM imaging data from the GLASS-JWST program to measure galaxy size and luminosity to figure out the morphology and the size-luminosity relation from rest-frame optical to UV.
“It’s the first time that we can study the galaxy’s properties in rest-frame optical at a redshift larger than 7 with JWST, and the size-luminosity is important for determining the shape of luminosity function which indicates the primary sources responsible for the cosmic reionization, i.e., numerous faint galaxies or relatively less bright galaxies.
“The original wavelength of light will shift to a longer wavelength when it travels from the early universe to us. Thus, the rest-frame wavelength is used to clarify their intrinsic wavelength, rather than the observed wavelength.
Previously, with
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