Fig. 1: NIRSpec PRISM spectrum and RGB image of CANUCS-LRD-z8.6 at z = 8.6319 ± 0.0005.
From: Extreme properties of a compact and massive accreting black hole host in the first 500 Myr
Errorbars are the 1σ noise level. a 2D spectrum. b The black line represents the measured 1D spectrum. The two independent best-fitting functions for the rest-frame UV and optical part are shown as blue and red solid curves, respectively. Vertical solid (dashed) lines mark detected (non-detected) emission lines, respectively. c residuals of the fit of the 1D spectrum. The dashed horizontal lines mark the 0 level and the average ±1σ noise levels derived at λ>2000 Å. The gray shaded area is 1σ rms. d Zoom in on the Hβ emission line. The best-fitting spectrum is shown in red, while the narrow and broad Hβ components are shown in yellow and light blue, respectively. e zoom-in of the N iv and C iv emission lines. Y-axis has the same label as (d). The best-fitting spectrum is shown in blue. f RGB image of CANUCS-LRD-z8.6, combining psf-matched imaging using F090W, F200W, and F444W filters. The scale of the image is reported in the lower left corner. The source observed rightward our target is a foreground galaxy at \({z}_{{{{\rm{phot}}}}}=0.4{9}_{-0.07}^{+0.05}\). Source data are provided on Zenodo (see “Data Availability” section).
