Table 2
Pearson (r) and Spearman (rS) coefficients obtained for the correlations between different pairs of variables from the data of each galaxy.
| Variables correlated | Galaxy | Mean coefficients from Monte Carlo | From the original sample | |||
| X | Y | r ± σP | rS ± σS | r | r S | |
|
|
||||||
| Spectral type | EW(Ti i) | SMC | 0.815 ± 0.012 | 0.793 ± 0.015 | 0.876 | 0.863 |
| Spectral type | EW(Ti i) | LMC | 0.69 ± 0.02 | 0.57 ± 0.04 | 0.79 | 0.70 |
| Spectral type | EW(Fe i) | SMC | 0.462 ± 0.019 | 0.42 ± 0.02 | 0.490 | 0.44 |
| Spectral type | EW(Fe i) | LMC | 0.20 ± 0.03 | 0.18 ± 0.03 | 0.21 | 0.22 |
| Spectral type | EW(CaT) | SMC | 0.18 ± 0.03 | 0.20 ± 0.03 | 0.21 | 0.23 |
| Spectral type | EW(CaT) | LMC | −0.23 ± 0.04 | −0.15 ± 0.04 | −0.26 | −0.17 |
|
|
||||||
| EW(Ti i) | Mbol | SMC | −0.02 ± 0.04 | −0.223 ± 0.015 | −0.129 | −0.234 |
| EW(Ti i) | Mbol( < −6 mag) | SMC | −0.214 ± 0.019 | −0.304 ± 0.019 | −0.222 | −0.323 |
| EW(Ti i) | Mbol | LMC | −0.30 ± 0.03 | −0.46 ± 0.03 | −0.33 | −0.53 |
| EW(Fe i) | Mbol | SMC | −0.09 ± 0.11 | −0.674 ± 0.012 | −0.527 | −0.704 |
| EW(Fe i) | Mbol( < −6 mag) | SMC | −0.408 ± 0.14 | −0.619 ± 0.014 | −0.417 | −0.645 |
| EW(Fe i) | M bol | LMC | −0.556 ± 0.019 | −0.529 ± 0.019 | −0.580 | −0.556 |
| EW(CaT) | M bol | SMC | −0.063 ± 0.08 | −0.47 ± 0.03 | −0.392 | −0.524 |
| EW(CaT) | Mbol( < −6 mag) | SMC | −0.29 ± 0.02 | −0.43 ± 0.03 | −0.32 | −0.48 |
| EW(CaT) | M bol | LMC | −0.36 ± 0.03 | −0.29 ± 0.04 | −0.40 | −0.32 |
|
|
||||||
| Δ(EW(Ti i)) | Δ(Spectral type) | Both | 0.48 ± 0.03 | 0.42 ± 0.03 | 0.62 | 0.57 |
| Δ(EW(Fe i)) | Δ(Spectral type) | Both | 0.04 ± 0.04 | 0.04 ± 0.04 | 0.05 | 0.03 |
| Δ(EW(CaT)) | Δ(Spectral type) | Both | −0.01 ± 0.04 | −0.07 ± 0.04 | −0.01 | −0.09 |
|
|
||||||
| Spectral type | Mbol( < −6 mag) | SMC | −0.17 ± 0.02 | −0.20 ± 0.02 | −0.18 | −0.22 |
| Spectral type | Mbol( < −6.7 mag) | SMC | −0.28 ± 0.03 | −0.31 ± 0.03 | −0.30 | −0.34 |
| Spectral typea | Mbol( < −6 mag) | LMC | −0.37 ± 0.03 | −0.47 ± 0.04 | −0.40 | −0.53 |
Notes. The values given by Monte Carlo are the mean ones and their corresponding standard deviations. The details of the Monte Carlo process we used are explained in Sect. 2.5. We also provide the correlation coefficients obtained for the original samples (without Monte Carlo).
For this calculation, the few CSGs from the LMC earlier than G7 were treated as outliers and removed (see Fig. 16b).
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