Core population of L1517. From left to right and from top to bottom: contrast-enhanced DSS blue image identifying the core positions, 1.2 mm dust continuum emission, N₂H⁺(1–0) integrated intensity, and SO(3₂–2₁) integrated intensity. Offsets and star symbols are as in Fig. 2. First contour and spacing are 2 mJy/11′′-beam for 1.2 mm continuum, 0.16 K km s^-1 for N₂H⁺(1–0), and 0.08 K km s^-1 for SO(3₂–2₁). To enhance the sensitivity to extended emission, the 1.2 mm continuum map has been convolved to an equivalent resolution of 30′′, and the N₂H⁺ and SO maps to a resolution of 75′′.