Table 2.
Results of the polytropic spheres matching the observation data of LITTLE THINGS.
| Name | n | σ | ρc | χpol | χiso | M | Miso |  |
 |
 |
|---|---|---|---|---|---|---|---|---|---|---|
| (10−9) | (10−3 M⊙ pc−3) | (108 M⊙) | (108 M⊙) | (km s−1) | (km s−1) | (km s−1) | ||||
| The first class of models | ||||||||||
| CVnIdwA | 0.1 | 3.36 | 4.949 | 2.73 | 3.79 | 3.68 | 3.16 | 24.70 | 24.66 | 24.91 |
| Haro 36 | 0.3 | 23.30 | 17.730 | 0.27 | 0.27 | 44.39 | 20.72 | 65.73 | 53.24 | 55.87 |
| IC 1613 | 0.5 | 0.94 | 2.423 | 2.45 | 4.28 | 1.10 | 0.23 | 13.26 | 8.60 | 16.01 |
| DDO 53 | 0.7 | 2.98 | 29.091 | 1.07 | 1.86 | 2.00 | 2.57 | 23.74 | 27.71 | 27.31 |
| UGC 8508 | 0.7 | 12.20 | 42.728 | 0.26 | 0.21 | 13.63 | 8.11 | 48.03 | 43.45 | 45.56 |
| DDO 168 | 0.9 | 18.10 | 43.319 | 0.99 | 5.43 | 26.81 | 30.71 | 58.69 | 65.02 | 58.03 |
| DDO 210 | 0.95 | 0.57 | 93.449 | 0.82 | 0.64 | 0.10 | 0.06 | 10.39 | 9.68 | 10.64 |
| The second class of models | ||||||||||
| NGC 1569 | 1.25 | 1.56 | 7.180 | 0.18 | 1.66 | 1.93 | 10.71 | 17.36 | 39.00 | 25.00 |
| DDO 126 | 1.3 | 5.83 | 15.306 | 0.20 | 0.46 | 9.70 | 11.18 | 33.57 | 34.84 | 34.13 |
| IC 10 | 1.7 | 1.21 | 16.599 | 0.16 | 0.34 | 0.26 | 0.42 | 15.40 | 18.49 | 18.60 |
| DDO 87 | 1.95 | 12.50 | 10.460 | 0.62 | 0.27 | 45.49 | 45.66 | 49.63 | 51.71 | 53.54 |
| The third class of models | ||||||||||
| DDO 52 | 2.15 | 15.40 | 29.697 | 0.27 | 0.16 | 39.01 | 39.71 | 55.21 | 56.46 | 57.47 |
| NGC 3738 | 2.25 | 74.10 | 1539.748 | 2.70 | 1.69 | 58.75 | 62.75 | 121.26 | 126.09 | 129.69 |
| WLM | 2.3 | 5.57 | 40.630 | 0.21 | 0.07 | 7.56 | 8.12 | 33.27 | 34.97 | 36.27 |
| DDO 133 | 2.3 | 8.64 | 48.091 | 1.37 | 0.97 | 13.42 | 15.12 | 41.44 | 43.50 | 42.87 |
| DDO 101 | 2.65 | 19.80 | 376.840 | 5.38 | 12.69 | 18.24 | 16.38 | 63.06 | 62.37 | 63.83 |
| DDO 216 | 2.7 | 0.80 | 69.366 | 0.65 | 0.31 | 0.35 | 0.32 | 12.67 | 13.05 | 17.07 |
| NGC 2366 | 2.75 | 13.10 | 23.240 | 0.44 | 0.37 | 40.32 | 51.35 | 51.27 | 52.56 | 52.44 |
| DDO 154 | 2.95 | 10.20 | 28.574 | 0.50 | 0.18 | 26.04 | 35.91 | 45.24 | 46.22 | 47.55 |
| DDO 50 | 3.95 | 3.43 | 59.010 | 1.66 | 3.86 | 4.43 | 10.28 | 26.50 | 21.90 | 30.97 |
Notes. The second and third column correspond to the best-fitting polytropic index n and relativistic parameter σ. The computed values of the χ2 for our model and the pseudo-isothermal are given in the fourth and fifth columns. The values of mass and maximal velocities are also presented.
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