Dust temperature tracing the ISRF intensity in the Galaxy

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Table 2:

Average $\widetilde{T}_{\rm D}$ in the SDP fields and best-fit parameters for different regions along the LOS (see text for details).
Field	l=30 $^\circ$				l=59 $^\circ$
$\widetilde{T}_{\rm D}^{\rm DIRBE}$ $^{\dag }$	20.6 K ( $X_{\rm ISRF}=2.6$ )				17.9 K ( $X_{\rm ISRF}=1.1$ )
$\widetilde{T}_{\rm D}^{\rm Hi-GAL}$	21.3 K ( $X_{\rm ISRF}=3.3$ )				18.2 K ( $X_{\rm ISRF}=1.3$ )
Region $^{\flat}$	Sag.	Scu.1	Scu.2	Dif.	Vul.	Per.	Dif.
$T_{\rm D}$ (K)	24.5	19.7	24.1	18.9	17.1	18.8	14.3
$\Delta T_{\rm D}$ (K)	$\pm$ 1.0	$\pm$ 0.7	$\pm$ 1.0	$\pm$ 0.6	$\pm$ 0.5	$\pm$ 0.6	$\pm$ 0.3
$\tau_{250}/N_{\rm H}$ $^{\ddag }$	5.0	11.3	5.8	10.0	1.9	2.7	4.2

Notes. $^{(\dag )}$ Averaged over $2\hbox{$^\circ$ }\times 2\hbox{$^\circ$ }$ in the maps of Lagache et al. (1998).
$^{(\flat)}$ Sag. = Sagittarius (0-2.5 kpc), Scu=Scutum-Crux (3.5-6, 6-8 kpc), dif = diffuse, Vul = Vulpecula (0-3.5 kpc), Per = Perseus (6-10 kpc).
$^{(\ddag )}$ In 10^-25 $\rm cm^2$ .

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