Table 3.
Results for the IMFIT decomposition of the K-band image for UGC 4277 and the IRAC 3.6 μm images for the rest of the HEROES galaxies.
| Parameter | Unit | NGC 973 | UGC 4277 | IC 2531 | NGC 4013 | NGC 4217 | NGC 5529 | NGC 5907 |
|---|---|---|---|---|---|---|---|---|
| i | deg | 89.5 | 88.6 | 89.6 | 89.8 | 87.4 | 87.2 | 85.1 |
| 1. Thin disc: | ||||||||
|
kpc | 12.34 ± 0.95 | 7.03 ± 0.28 | 8.0 ± 0.54 | 5.34 ± 0.89 | 3.31 ± 0.42 | 9.53 ± 0.13 | 4.75 ± 0.51 |
|
kpc | 3.88 ± 0.27 | – | 3.33 ± 0.58 | 0.86 ± 0.10 | 0.01 ± 0.1 | 1.08 ± 0.18 | 3.45 ± 0.31 |
|
kpc | 0.35 ± 0.03 | 0.49 ± 0.03 | 0.61 ± 0.04 | 0.18 ± 0.01 | 0.11 ± 0.01 | 0.31 ± 0.03 | 0.16 ± 0.02 |
|
kpc | 23.09 ± 2.20 | – | 21.41 ± 3.57 | 8.79 ± 1.72 | 11.19 ± 1.20 | 23.27 ± 2.21 | 19.80 ± 2.58 |
| L t/L tot | – | 0.05 ± 0.01 | 0.41 ± 0.04 | 0.66 ± 0.07 | 0.25 ± 0.08 | 0.36 ± 0.07 | 0.45 ± 0.04 | 0.85 ± 0.05 |
| 2. Thick disc: | ||||||||
|
kpc | 17.88 ± 1.63 | 9.32 ± 0.77 | 24.87 ± 0.77 | 2.44 ± 0.22 | 3.53 ± 0.1 | 7.65 ± 0.22 | 5.59 ± 0.49 |
|
kpc | 5.62 ± 0.71 | – | – | 2.12 ± 0.58 | 3.39 ± 0.18 | – | – |
|
kpc | 1.34 ± 0.14 | 2.08 ± 0.16 | 1.57 ± 0.18 | 0.49 ± 0.02 | 0.93 ± 0.03 | 1.20 ± 0.12 | 1.88 ± 0.25 |
|
kpc | 23.09 ± 2.20 | – | – | 8.79 ± 1.72 | 11.19 ± 1.20 | – | – |
| L T/L tot | – | 0.39 ± 0.06 | 0.39 ± 0.05 | 0.15 ± 0.03 | 0.55 ± 0.07 | 0.60 ± 0.07 | 0.43 ± 0.06 | 0.10 ± 0.03 |
| 3. Bulge: | ||||||||
| r e, b | kpc | 1.20 ± 0.07 | 1.68 ± 0.08 | 1.86 ± 0.11 | 0.20 ± 0.03 | 0.40 ± 0.03 | 1.49 ± 0.16 | 0.56 ± 0.09 |
| n b | – | 5.48 ± 0.18 | 2.64 ± 0.2 | 2.26 ± 0.4 | 1.54 ± 0.3 | 1.54 ± 0.3 | 3.33 ± 0.21 | 0.97 ± 0.30 |
| q b | – | 0.49 ± 0.01 | 0.67 ± 0.02 | 0.85 ± 0.03 | 1.00 ± 0.04 | 0.95 ± 0.02 | 0.70 ± 0.02 | 0.37 ± 0.02 |
| L b/L tot | – | 0.56 ± 0.06 | 0.20 ± 0.03 | 0.19 ± 0.05 | 0.05 ± 0.01 | 0.04 ± 0.01 | 0.12 ± 0.02 | 0.05 ± 0.01 |
| 4. Halo: | ||||||||
| r e, h | kpc | – | – | – | 7.44 ± 1.22 | – | – | – |
| n h | – | – | – | – | 1.57 ± 0.23 | – | – | – |
| q h | – | – | – | – | 0.39 ± 0.05 | – | – | – |
| L h/L tot | – | – | – | – | 0.15 ± 0.01 | – | – | – |
| Total: | ||||||||
| L tot | AB-mag | −22.99 ± 0.13 | −22.95 ± 0.10 | −21.92 ± 0.19 | −21.36 ± 0.17 | −21.53 ± 0.14 | −22.49 ± 0.09 | −21.96 ± 0.23 |
| M ⋆ | 1010 M⊙ | 21.21 ± 2.50 | 13.5 ± 1.23 | 7.91 ± 1.69 | 4.73 ± 0.71 | 5.52 ± 0.72 | 13.42 ± 1.10 | 8.2 ± 1.7 |
Notes. The inclination angle i was fixed for both the thin and thick discs. We used the BrokenExponentialDisk3D function for the thin and/or thick disc if the respective R b is defined in the table, otherwise the ExponentialDisk3Dwas used. The bulges and the halo were fitted with the Sérsic function. To compute the total stellar mass M ⋆ from the total luminosity L tot in the respective NIR band, we relied on the mass-to-light ratio at 3.6 μm of Eskew et al. (2012), except for UGC 4277 for which the mass-to-light ratio in the Kband 0.8 M ⊙/L ⊙ from McGaugh et al. (2000) was used.
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