Fig. 7.

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NGC 1052-DF4 appearance as the image depth increases. The four stamps presented, each covering a 4′×4′ region around the galaxy NGC 1052-DF4, correspond to observations obtained at different surface brightness limiting depths in the r band (3σ, 10″ × 10″) using various facilities. The tidal streams become visible when reaching surface brightness levels fainter than μr ∼ 29 mag arcsec−2. In all stamps, to represent different pixel intensities, the white corresponds to faint pixels and black represents brighter features. The black and white background is generated used the r band only. The color part of the stamps is created using rescaled HiPERCAM data from Montes et al. (2020) using the g, r, and z filters.
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