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This article has an erratum: [https://doi.org/10.1051/0004-6361/201833933e]


Table 2.

Parameters used in SExtractor in the different lists.

List Thresh. (σsky) Min. area (pix) Back size (pix)
Small 1 10 100 × 100
Large 50 10 000 21 000 × 21 000
LSB 5 25 500 × 500

Notes. The columns in the table correspond to the name of the list (List), detection threshold (Thresh.) in units of background noise standard deviations (1σ corresponds typically to μr≈ 26 mag arcsec−2), number of connected pixels above threshold to count as detection (Min. area), and the background model grid size (Back size). In the “LSB” list, an additional 9 × 9-pixel median filtering was applied to the images before the detection, so the 5σ threshold corresponds to 0.55σ in the non-filtered image.

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