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Home All issues Volume 508 / No 2 (December III 2009) A&A, 508 2 (2009) 695-706 Full HTML
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Table 2:

Pearson's correlation coefficients, degrees of freedom and significance for relations with iron spread in our GC sample.
Parameter $r_{\rm p}$ d.o.f. signif.
MV -0.49 17 95-98%
$R_{\rm perig.}$ +0.47 15 90-95%
$\log T_{\rm eff}^{\rm max}$(HB) +0.38 17 90%
x(MF) +0.60 11 95-98%
rel.Age -0.49 17 95-98%
$\sigma $(h) +0.59 16 99%
P +0.65 17 >99%
I -0.67 17 >99%
E +0.52 17 $\sim$98%
[(Mg+Al+Si)/Fe] -0.48 16 95-98%
$[\langle \rm Si,Ca\rangle$/Fe] -0.70 17 >99%
[Ca/Fe] -0.78 17 >99%
[<$\alpha$>]/Fe] -0.72 17 >99%
[Mg/Fe $]_{\rm max}$ -0.52 17 98%
[Mg/Fe $]_{\rm min}$ -0.56 17 98-99%
[Si/Fe $]_{\rm min}$ -0.44 17 90-95%

- MV from the on-line version of the Harris (1996) catalogue.
- Peri-galactic distance $R_{\rm perig.}$ in kpc from Dinescu et al. (1999) or Casetti-Dinescu et al. (2007).
- Maximum temperature along the HB $\log T_{\rm eff}^{\rm max}$(HB) from Recio Blanco et al. (2006) or derived in Carretta et al. (2009c).
- Exponent x of the power-law relation for global mass function from Djorgovski et al. (1993).
- Relative age parameter from De Angeli et al. (2005) and Rosenberg et al. (1999).
- Velocity dispersion at the half-mass radius $\sigma(h)$ from Gnedin et al. (2002).
- Fractions of primordial P, intermediate I and extreme E components from Carretta et al. (2009a; Paper VII).
- The other abundance ratios are derived from UVES spectra (Carretta et al. 2009b; Paper VIII); here [$\alpha$/Fe] is the average of [Mg/Fe] $_{\rm max}$, [Si/Fe] $_{\rm min}$ and [Ca/Fe].

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