Table C.1.
Mclust best fitted parameters obtained for the bivariate density estimate from four Gaussian functions in the surface brightness − colour plane.
| Gaussian | MP | Mean vector |
Covariance matrix |
|||
|---|---|---|---|---|---|---|
| x̄ | ȳ | σxx | σyy | σxy = σyx | ||
| 1 | 0.220 | 0.745 | 21.776 | 0.0132 | 0.2884 | 0.0046 |
| 2 | 0.451 | 0.500 | 22.179 | 0.0239 | 0.8453 | −0.0209 |
| 3 | 0.262 | 0.827 | 21.024 | 0.0044 | 0.2565 | 0.0011 |
| 4 | 0.067 | 0.812 | 20.216 | 0.0024 | 0.2212 | 0.0051 |
Notes. The MP values quoted in the second column are the mixing proportions for each component of the mixture model. For the mean vectors and covariance matrices, the x variable corresponds to the galaxy colour g−r, while the y variable is the surface brightness μr.
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