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Table 6

Mean C/CO line luminosity ratios.

Ratio NGC 5128a AGNsb Star-burstsc Nearbyd Milky Way
Centere Cloudsf

CO(10–9)/CO(5–4) 0.26 ± 0.05 0.38 ± 0.08 1.25 ± 0.15
[CI](2–1)/[CI](1–0) 2.6 ± 0.5 1.6 ± 0.3 3.2 ± 0.3 1.0 ±0.1 0.5–1.9
[CI](1–0)/CO(4–3) 1.2 ± 0.1 0.6 ± 0.1 0.4 ± 0.1 0.6 ± 0.2 0.6 ±0.1 0.05–0.45
[CI](2–1)/CO(7–6) 5.7 ± 0.8 1.6 ± 0.2 0.7 ± 0.1 1.1 ±0.2 0.3 ± 0.1

Notes.

(a)

SPIRE data from this paper,

(b)

SPIRE data from Spinoglio et al. (2012); Pereira-Santaella et al. (2013).

(c)

SPIRE data from Panuzzo et al. (2010); Van der Werf et al. (2010); Rangwala et al. (2011); Meijerink et al. (2013); Papadopoulos et al. (2013); Rosenberg et al. (2013).

(d)

Ground-based data from Israel & Baas (2002); Hitschfeld et al. (2008). Note that this sample overlaps with both the SPIRE star-burst and SPIRE AGN samples.

(e)

COBE data from Fixsen et al. (1999).

(f)

From data compiled by Kramer et al. (2004, 2008).

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