Table 6
Structural parameters and metallicities of the candidate Cepheid groups.
| ID | x | y | z | R G |
|
|
D | N s | P | σ(P) |
|
Δ[Fe/H] | σ(Δ[Fe/H]) |
| (kpc) | (kpc) | (kpc) | (kpc) | (kpc) | (kpc) | (kpc) | (days) | (days) | (kpc-3) | ||||
|
|
|||||||||||||
| I | 0.766 | –1.612 | –0.033 | 6.374 | 0.384 | 0.475 | 1.213 | 20 | 8.69 | 5.17 | 16.8 | –0.039 | 0.010 |
| II | –0.939 | –1.562 | –0.035 | 6.447 | 0.286 | 0.430 | 0.827 | 7 | 8.69 | 3.78 | 4.8 | –0.003 | 0.004 |
| III | –1.636 | –0.655 | –0.003 | 7.466 | 0.775 | 0.560 | 1.661 | 37 | 7.48 | 7.35 | 37.7 | –0.063 | 0.010 |
| IV | 0.016 | –0.503 | –0.034 | 7.437 | 0.503 | 0.501 | 1.879 | 52 | 6.91 | 5.20 | 45.7 | –0.009 | 0.008 |
| V | 2.182 | –0.137 | 0.044 | 8.103 | 0.464 | 0.371 | 0.847 | 7 | 8.74 | 5.84 | 8.8 | 0.009 | 0.002 |
| VI | 1.549 | 0.918 | –0.099 | 8.993 | 0.133 | 0.186 | 0.497 | 6 | 5.30 | 1.34 | 4.2 | 0.033 | 0.003 |
| VII | 2.608 | 1.167 | 0.050 | 9.473 | 0.396 | 0.190 | 0.654 | 11 | 6.72 | 3.51 | 4.7 | 0.062 | 0.007 |
| VIII | 1.732 | 1.515 | 0.014 | 9.613 | 0.219 | 0.261 | 0.641 | 11 | 5.08 | 2.37 | 4.2 | 0.040 | 0.009 |
| IX | 2.511 | 1.777 | –0.008 | 10.036 | 0.144 | 0.226 | 0.621 | 7 | 5.38 | 0.79 | 4.4 | 0.046 | 0.006 |
| X | 3.269 | 1.754 | –0.047 | 10.231 | 0.187 | 0.230 | 0.449 | 6 | 5.63 | 1.60 | 6.8 | 0.033 | 0.007 |
Notes. Structural parameters of the ten candidate Cepheid groups identified in Sect. 4. From left to right Col. 1 gives the identification number, while Cols 2–4 give the Galactic coordinates (x,y,z) of the barycenter. Columns 5–7 give the Galactocentric radius of the barycenter together with the Galactocentric distance of both the inner and the outer edge of the Cepheid group. Column 8 gives the diameter of the CG, while Col. 9 lists the number of Cepheid per CG. Columns 10 and 11 give the mean period and its intrinsic dispersion, while Col. 12 gives the density. Columns 13 and 14 give the mean residual iron abundance and its intrinsic dispersion.
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