JWST MIRI detections of Hα and [O III] and direct metallicity measurement of the z=10.17 lensed galaxy MACS0647-JD

JWST spectroscopy has revolutionized our understanding of galaxies in the early universe. Covering wavelengths up to 5.3\,{\rm \mu m}, NIRSpec can detect rest-frame optical emission lines H\alpha out to z = 7 and [O III] to z = 9.5. Observing these lines in more distant galaxies requires longer wavelength spectroscopy... Show more