Spatially resolved spectrophotometric SED modeling of NGC 253’s central molecular zone - I. Star formation in extragalactic giant molecular clouds

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GMC	T_DD	M_dust	ism.Rdust	ism.f_PAH	noise.f_cal	$χ_{red}^{2}$ $\chi^{2}_{red}$
	[K]	[log₁₀ (M_⊙)]	[log₁₀ (pc)]
1	34.643 $_{- 3.512}^{+ 2.957}$ $_{-3.512}^{+2.957}$	4.410 $_{- 0.195}^{+ 0.210}$ $_{-0.195}^{+0.210}$	1.08 $_{- 0.09}^{+ 0.10}$ $_{-0.09}^{+0.10}$	0.17 $_{- 0.06}^{+ 0.10}$ $_{-0.06}^{+0.10}$	-0.64 $_{- 0.11}^{+ 0.11}$ $_{-0.11}^{+0.11}$	2.27
2	33.528 $_{- 2.875}^{+ 4.437}$ $_{-2.875}^{+4.437}$	4.435 $_{- 0.105}^{+ 0.115}$ $_{-0.105}^{+0.115}$	1.08 $_{- 0.07}^{+ 0.07}$ $_{-0.07}^{+0.07}$	0.32 $_{- 0.07}^{+ 0.06}$ $_{-0.07}^{+0.06}$	-2.25 $_{- 0.14}^{+ 0.14}$ $_{-0.14}^{+0.14}$	1.80
3	34.110 $_{- 3.781}^{+ 14.707}$ $_{-3.781}^{+14.707}$	5.766 $_{- 0.315}^{+ 0.204}$ $_{-0.315}^{+0.204}$	1.64 $_{- 0.20}^{+ 0.11}$ $_{-0.20}^{+0.11}$	0.12 $_{- 0.07}^{+ 0.04}$ $_{-0.07}^{+0.04}$	-0.61 $_{- 0.06}^{+ 0.07}$ $_{-0.06}^{+0.07}$	1.47
4	84.532 $_{- 12.551}^{+ 6.791}$ $_{-12.551}^{+6.791}$	5.195 $_{- 0.108}^{+ 0.153}$ $_{-0.108}^{+0.153}$	1.17 $_{- 0.08}^{+ 0.15}$ $_{-0.08}^{+0.15}$	0.04 $_{- 0.02}^{+ 0.02}$ $_{-0.02}^{+0.02}$	-0.55 $_{- 0.07}^{+ 0.07}$ $_{-0.07}^{+0.07}$	1.32
5	67.929 $_{- 3.896}^{+ 4.023}$ $_{-3.896}^{+4.023}$	5.566 $_{- 0.107}^{+ 0.133}$ $_{-0.107}^{+0.133}$	1.43 $_{- 0.09}^{+ 0.08}$ $_{-0.09}^{+0.08}$	0.03 $_{- 0.01}^{+ 0.02}$ $_{-0.01}^{+0.02}$	-0.62 $_{- 0.08}^{+ 0.08}$ $_{-0.08}^{+0.08}$	1.14
6	63.318 $_{- 2.800}^{+ 3.233}$ $_{-2.800}^{+3.233}$	5.453 $_{- 0.102}^{+ 0.079}$ $_{-0.102}^{+0.079}$	1.35 $_{- 0.08}^{+ 0.06}$ $_{-0.08}^{+0.06}$	0.04 $_{- 0.01}^{+ 0.01}$ $_{-0.01}^{+0.01}$	-0.73 $_{- 0.08}^{+ 0.10}$ $_{-0.08}^{+0.10}$	1.35
7	62.911 $_{- 10.806}^{+ 4.631}$ $_{-10.806}^{+4.631}$	4.474 $_{- 0.135}^{+ 0.145}$ $_{-0.135}^{+0.145}$	1.08 $_{- 0.10}^{+ 0.12}$ $_{-0.10}^{+0.12}$	0.06 $_{- 0.03}^{+ 0.02}$ $_{-0.03}^{+0.02}$	-0.94 $_{- 0.09}^{+ 0.10}$ $_{-0.09}^{+0.10}$	1.38
8	41.419 $_{- 2.629}^{+ 4.510}$ $_{-2.629}^{+4.510}$	4.492 $_{- 0.127}^{+ 0.147}$ $_{-0.127}^{+0.147}$	1.21 $_{- 0.09}^{+ 0.08}$ $_{-0.09}^{+0.08}$	0.17 $_{- 0.05}^{+ 0.07}$ $_{-0.05}^{+0.07}$	-1.38 $_{- 0.10}^{+ 0.11}$ $_{-0.10}^{+0.11}$	1.35
9	43.383 $_{- 4.396}^{+ 5.060}$ $_{-4.396}^{+5.060}$	4.679 $_{- 0.124}^{+ 0.133}$ $_{-0.124}^{+0.133}$	1.17 $_{- 0.09}^{+ 0.08}$ $_{-0.09}^{+0.08}$	0.15 $_{- 0.04}^{+ 0.07}$ $_{-0.04}^{+0.07}$	-1.11 $_{- 0.08}^{+ 0.09}$ $_{-0.08}^{+0.09}$	1.29
10	41.532 $_{- 3.377}^{+ 5.290}$ $_{-3.377}^{+5.290}$	4.574 $_{- 0.117}^{+ 0.128}$ $_{-0.117}^{+0.128}$	1.20 $_{- 0.08}^{+ 0.08}$ $_{-0.08}^{+0.08}$	0.19 $_{- 0.05}^{+ 0.06}$ $_{-0.05}^{+0.06}$	-1.25 $_{- 0.09}^{+ 0.10}$ $_{-0.09}^{+0.10}$	1.31

Notes. From left to right, the columns represent the GMC number, the temperature diffuse dust (DD) temperature (T_DD), the dust mass (M_dust), the radius of the DD region (ism.Rdust), the fraction of the total emission from DD contributed by PAH (ism.f_PAH), the calibration error (noise.f_cal) which can introduce up to 30% uncertainties in the photometric points, accounting for observation uncertainties while effectively relaxing the constraints on the parameter space and allowing for a broader range of possible solutions. The last column is the reduced χ² computed at the best-fit parameter values. For the main SF-related parameters, see Table 5.

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