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Spatially-Resolved Spectra of Diffuse Galactic Light using 10.8 M DESI Sky Fibers

Saydjari, Andrew K. et al.
arXiv (All) · Papers
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astrophysics-of-galaxies
Using 10.8 million ``blank'' sky spectra from the DESI Year 3 dataset, we measure the diffuse galactic light (DGL) spectrum in the optical at spectral resolution $R \sim 4000$ by correlating with far-infrared emission from IRAS. Subdividing the sky into 54 deg$^2$ pixels (HEALPix, NSIDE = 8), we map
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