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Table 9.

Summary of the several Tex and NCO values derived for the 12CO molecule at different resolutions.

Spatial scale Spatial resolution Instrument Jup levels Number of Tex NCO Figure/
(arcsec, pc) components (K) (cm−2) Table
(1) (2) (3) (4) (5) (6) (7) (8)
Intermediate 20″, ≲400 APEX, HIFI 3 → 9 2 17, 90 17.6, 16.7 F5/T8
Large 35″, ≲700 SPIRE SLW & SSW 4 → 13 1 (2 (a)) 141 16.3 F8, F14
Large–intermediate 35″, ≲700 SPIRE SLW & SSW, PACS 4 → 20 2 82, 330 ∼17, 16.7 F9
Intermediate 19″, ≲400 SPIRE SSW, PACS 9 → 20 2 48, 323 17.8, 16.7 F11, F14
Small 9.4″, ≲200 PACS 15 → 20 1 364 (470 (b)) 14.9 (14.86) F12, F13, F14

Notes. Columns (1–2): spatial scale and spatial resolution of the data analyzed; Col. (3): instrument with which the analysis was performed; Col. (4): (upper) rotational transition Jup range involved in the analysis accordingly to the instruments considered, listed in Col. (3); Col. (5): number of components used in the fit; Col. (6): excitation temperature of 12CO molecule in kelvin; Col. (7): column density of 12CO molecule in cm−2; Col. (8): figure (F) and/or table (T) showing the results in each specific case;

(a)

see Sect. 5.1 for details;

(b)

see Sect. 5.3 for details.

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