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Fig. 13


RADEX calculations on modeling the line ratios toward the peak position in region C2 (αJ2000 = 22h17m27s.4, δJ2000 = 61°42′42′′) indicated by the cross in Figs. 12c and d. (a) The modeled line ratios, (red) and (blue), as a function of kinetic temperature and H2 number density. The solid lines and the dotted lines represent the observed line ratios and their 1σ uncertainties for and . The shadowed region in the intersection represents χ2 <2.3, corresponding to the 1σ range. (b) The modeled as a functionof H2 number density at a given kinetic temperature of 21 K.

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