Table 15.
CO(2−1)-to-CO(1−0) line ratio.
| R21 = ICO(2 − 1)/ICO(1 − 0) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Galaxies | CO-VGS |
CO-CS |
CO-VGS – CO-CS |
||||||
| considered | n° | mean | median | n° | mean | median | Δmean | σ | KS |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
| Upper lim. | 13/1 | 1.37 ± 0.19 | 1.19 | 50/0 | 1.37 ± 0.05 | 1.34 | −0.00 ± 0.19 | −0.01 | 1 × 10−3 |
| Lower lim. | 14/1 | 1.74 ± 0.28 | 1.49 | 54/7 | 1.41 ± 0.05 | 1.34 | 0.33 ± 0.28 | 1.18 | 0.02 |
Notes. In the mean, only galaxies with an aperture correction of fap = 1.1 − 1.6 were considered in order to make a consistent comparison. (1) Upper row: Only detections and upper limits were taken into account. Lower row: Only detections and lower limits were taken into account. (2) n: Number of CO-VGS galaxies in the bin. nup: Number of upper limits of CO-VGS galaxies in the bin. (3) Mean emission line ratio of the CO-VGS galaxies in the bin taking lower limits into account. (4) Median emission line ratio of the CO-VGS galaxies in the bin. (5)–(7) The same for the CO-CS sample. (8) Difference of the mean emission line ratio between CO-VGS and CO-CS (Δmean) and its error (err(Δmean)). (9) σ = Δmean/err(Δmean). (10) p-value of the Kolmogorov–Smirnov test.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.