The Rosette sub-field (9′ × 9′) is shown as as the observed images ℐλO at 70, 160, 250, 350, 500 μm (left to right, top to bottom) with the extraction ellipses (FWHM) of only measurable sources (Fiλ P > σiλ P and Fiλ T > σiλ T) overlaid, as well as the composite 3-color RGB image (500, 250, 70 μm) created using the images ℐλM of the deblending shapes of each extracted source (lower-right). The default condition, that a tentatve source must be detected in at least two bands, was used. Most of the compact sources visible at 70 μm are unresolved protostars; several groups of them, discussed in Sect. 3.2, are labeled A–F. For better visibility, the values displayed in the panels are somewhat limited in range; the color coding in the lower-right panel is linear, in the other panels it is a function of the square root of intensity in MJy/sr.
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