Extended Data Fig. 2: Channel maps of the [C ii] emission line from DLA0817g. | Nature

Extended Data Fig. 2: Channel maps of the [C ii] emission line from DLA0817g.

From: A cold, massive, rotating disk galaxy 1.5 billion years after the Big Bang

Extended Data Fig. 2

The plus symbol indicates the central position of the [C ii] emission derived from the kinematic analysis. This agrees within the uncertainties with the position derived from fitting a 2D-Gaussian profile to both the velocity-integrated [C ii] emission and the far-infrared continuum emission, using the imfit routine in CASA (Extended Data Table 1). The outer black contour is 3σ, where σ = 0.35 mJy per beam, with subsequent contours increasing in powers of \(\sqrt{2}\). Velocities are relative to the kinematically derived [C ii] redshift, z = 4.2603. The synthesized beam is shown in the bottom left corner of the bottom left panel.

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