Table 3
Lines covered as part of CLAWS with measurements re-gridded onto the same hexagonal grid and convolved to a common working resolution: 15,27, or 34 arcsec.
35’’/1.4 kpc aperture (a) | 60’’/2.4 kpc aperture (a) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Band | Line | Resolution | Tpeak | <rms> | Wline | S/Nline | Wline/W12CO(2–1) | Wline | S/Nline | Wline/W12CO(2-1) |
(″) | (mK) | (mK) | (K km s–1) | (K km s–1) | ||||||
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | ||
3mm | CN(1–0) | 34 | 32 | 4.4 | 1.7 | 66 | 0.05 | 1.1 | 50 | 0.04 |
C17O(1–0) | 27 34 |
26 20 |
5.8 4.2 |
0.23 | 10 | 0.006 | 0.1 | 11 | 0.007 | |
13CO(1–0) | 27 34 |
142 116 |
4.9 3.6 |
5.5 | 250 | 0.15 | 4.2 | 280 | 0.15 | |
C18O(1–0) | 27 34 |
40 33 |
4.7 3.4 |
1.2 | 52 | 0.033 | 0.9 | 47 | 0.030 | |
CS (2–1) | 34 | 15 | 3.0 | 0.6 | 35 | 0.016 | 0.4 | 36 | 0.014 | |
CH3OH(2–1) | 34 | 13 | 2.8 | 0.2 | 9 | 0.004 | 0.1 | 7 | 0.004 | |
N2H+ (1–0) | 34 | 14 | 3.0 | 0.3 | 19 | 0.007 | 0.2 | 11 | 0.006 | |
HC3N(10–9) | 34 | 16 | 3.7 | 0.2 | 10 | 0.006 | 0.2 | 15 | 0.007 | |
1mm | 15 | 1420 | 20 | |||||||
12CO(2–1) | 27 | 850 | 10.6 | 37 | 710 | 1.0 | 29 | 750 | 1.0 | |
34 | 730 | 8.8 | ||||||||
15 | 185 | 17.6 | ||||||||
13CO(2–1) | 27 | 103 | 9.2 | 3.3 | 67 | 0.09 | 2.3 | 73 | 0.08 | |
34 | 88 | 7.7 | ||||||||
15 | 88 | 18.3 | ||||||||
C18O(2–1) | 27 | 51 | 9.4 | 0.9 | 21 | 0.03 | 0.6 | 21 | 0.02 | |
34 | 41 | 7.8 |
Notes. (a)Emission of the central region convolved to the given aperture size. (1) Working resolutions used for each molecular line. (2) Maximum peak temperature observed across the full map of M 51 for a given emission line at a given working resolution. (3) Average channel rms sensitivity at 4 km s–1 channel width. (4, 7) Velocity-integrated brightness temperature within the central aperture. (5,8) S/N within the central aperture. (6,9) line ratio of a given line with respect to the velocity-integrated 12CO (2–1) brightness temperature.
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