Gaussian distribution, 𝒩(L_bol, RA, Dec, θ_Lbol) (orange curve in the upper panel), which represents the luminosity peak P1 associated with two protostellar cores, and its intensity map (lower panel). The spatial contribution of the protostellar cores, w₁ and w₂, to luminosity peak P1 is assumed to be proportional to the value of the Gaussian function at the cores’ location, 𝒩₁ and 𝒩₂ at δ₁ and δ₂, respectively. The FWHM of the luminosity peak P1, θ_Lbol, is outlined by the dashed area in the upper panel and the orange ellipse in the lower panel. Red contours separate the luminosity peak into the intensity contribution of its two host cores.