Table 8
Metallicity information and derived αCO values for face-on DustPedia galaxies with data both for atomic and molecular gas, and molecular gas profiles fitted by an exponential function1.
| Galaxy | (O/H) Gradient2 | 12 + log (O/H)0.7r253 | αCO 4 | αCO (O/H) 5 | α CO, S13 6 | α CO, cen, S13 7 | ||
| [dex r25-1] | [M⊙ pc-2 (K km s-1)-1] | [M⊙ pc-2 (K km s-1)-1] | [M⊙ pc-2 (K km s-1)-1] | [M⊙ pc-2 (K km s-1)-1] | ||||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | ||
|
|
||||||||
| NGC 5457 (M 101) | −0.840 ± 0.029 | 8.12 ± 0.03 | 3.63 | 3.18 | 2.3−2.9 | 0.35 ± 0.20 | ||
| NGC 2403 | −0.524 ± 0.043 | 8.11 ± 0.05 | 2.97 | 2.42 | ||||
| IC 342 | −0.513 ± 0.087 | 8.47 ± 0.10 | 0.48 | 0.27 | ||||
| NGC 5194 (M 51) | −0.324 ± 0.053 | 8.65 ± 0.06 | 3.55 | 2.17 | ||||
| NGC 5055 (M 63) | −0.490 ± 0.031 | 8.53 ± 0.04 | 1.83 | 1.45 | 3.7−4.0 | 1.00 ± 0.25 | ||
| NGC 6946 | −0.337 ± 0.099 | 8.48 ± 0.12 | 0.28 | 0.26 | 1.8−2.0 | 0.40 ± 0.31 | ||
| NGC 925 | −0.473 ± 0.037 | 8.15 ± 0.04 | 9.06 | 7.71 | 10.0 | |||
| NGC 628 (M 74) | −0.572 ± 0.027 | 8.38 ± 0.03 | 6.38 | 4.80 | 3.9−5.1 | 2.24 ± 0.24 | ||
| NGC 4725 | −0.472 ± 0.853 | 8.50 ± 0.93 | 0.26 | 0.25 | 1.2−1.8 | 0.72 ± 0.71 | ||
| NGC 3521 | −0.666 ± 0.096 | 8.36 ± 0.10 | 7.78 | 4.05 | 7.3−7.6 | |||
| NGC 4736 (M 94) | −0.066 ± 0.170 | 8.52 ± 0.17 | 0.37 | 0.37 | 1.0−1.1 | 0.28 ± 0.17 | ||
Notes. 1) NGC 3031 (M 81) is not listed in this table, although it has data both in atomic and molecular gas because its molecular gas profile is not fitted by an exponential function; 2) metallicity gradients from Pilyugin et al. (2014); 3) derived oxygen abundances at the radius of 0.7 × r25; 4) and 5) αCO values derived neglecting metallicity gradients and taking into account metallicity gradients following prescriptions given in Sect. 7; 6) and 7) αCO values derived from Sandstrom et al. (2013) for the entire galaxy and the inner kpc of the galaxy, respectively.
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.