Fig. 2.
Analysed region and masking procedure. From top to bottom: Rows 1 and 2: high spatial resolution HST image of the scanned region (≃19.2″ × 202″) within the ACS. Rows 3–5: Pseudo-images reconstructed from the 16 slit positions observed with OSIRIS in Leo A. Row 3: entire extension of the observed field (≃19.2″ × 7′). Row 4: region where the integrated spectrum is obtained; in this case we mask background galaxies, saturated stars, and Milky Way star candidates (extraction A). Row 5: region where the integrated spectrum is obtained; in this case we mask just foreground galaxies and saturated stars (extraction B).
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