NASA's James Webb Space Telescope observed the Hubble Ultra Deep Field, providing high-resolution images and valuable data on the early universe's galaxies. This information aids in understanding galaxy reionization and was made public for diverse analysis and refining data analysis techniques. O
In October 2022, NASA’s James Webb Space Telescope observed the Hubble Ultra Deep Field for over 20 hours, focusing on wavelengths between 2 and 4 microns. The research team, including Christina Williams, Sandro Tacchella, and Michael Maseda, used Webb’s medium-band image filters to gather more accurate data on star formation history and ionization properties of galaxies during the universe’s first billion years. This information will help them understand how galaxies reionized the universe.
NASA spoke with Christina Williams , Sandro Tacchella , and Michael Maseda to learn more about the first observation of the Hubble Ultra Deep Field through Webb’s eyes. : We proposed to image the Ultra Deep Field using some of Webb’s NIRCam’s medium-band image filters, which allowed us to take images of spectral features more accurately than we could with broadband filters because medium-band filters span a shorter wavelength range. This gives us more sensitivity in measuring colors, which helps us understand the history of star formation and ionization properties of galaxies during the first billion years of the universe, like in the Reionization Era.
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