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JWST NIRSpec High-resolution Spectroscopy of MACS0647-JD at z=10.167: Resolved [OII] Doublet and Electron Density in an Early Galaxy
Abdurro'uf, Rebecca L. Larson, Dan Coe, Tiger Yu-Yang Hsiao, Javier \'Alvarez-M\'arquez, Alejandro Crespo G\'omez, Angela Adamo, Rachana Bhatawdekar, Arjan Bik, Larry D. Bradley, Christopher J. Conselice, Pratika Dayal, Jose M. Diego, Seiji Fujimoto, Lukas J. Furtak, Taylor A. Hutchison, Intae Jung, Meghana Killi, Vasily Kokorev, Matilde M…
JWST NIRSpec High-resolution Spectroscopy of MACS0647-JD at z=10.167: Resolved [OII] Doublet and Electron Density in an Early Galaxy
We present JWST/NIRSpec high-resolution spectroscopy G395H/F290LP of MACS0647-JD, a gravitationally lensed galaxy merger at $z=10.167$. The new spectroscopy, which is acquired for the two lensed images (JD1 and JD2), detects and resolves emission lines in the rest-frame ultraviolet (UV) and blue optical, including the resolved [OII]3726,3729 doublet, [NeIII]3870, [HeI]3890, H$δ$, H$γ$, and [OIII]4363. This is the first observation of the resolved [OII]3726,3729 doublet for a galaxy at $z>8$. …
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