Insights on the Milky Way bulge formation from the correlations between kinematics and metallicity

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Volume 519 (September 2010)

A&A, 519 (2010) A77

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Table 1:

Baade's Window velocity ellipsoid parameters.
[Fe/H]	N	$\sigma _{\rm r}$	$\sigma _{l}$	$\sigma _{b}$	C_lr	C_br	C_lb	l_v	$\theta_{br}$	$\theta_{lb}$
(dex)		(km s^-1)	(km s^-1)	(km s^-1)				( $^\circ$ )	( $^\circ$ )	( $^\circ$ )
all	340	111 $\pm$ 4	119 $\pm$ 6	95 $\pm$ 4	$-0.28 \pm 0.05$	0.21 $\pm$ 0.06	$-0.22 \pm 0.07$	$-38 \pm 5$	27 $\pm$ 7	$-22 \pm 6$
<-0.14	112	99 $\pm$ 6	138 $\pm$ 12	103 $\pm$ 7	$-0.16 \pm 0.09$	0.11 $\pm$ 0.10	$-0.18 \pm 0.12$	$-13 \pm 9$	36 $\pm$ 19	$-16 \pm 10$
>0.30	111	121 $\pm$ 6	107 $\pm$ 6	94 $\pm$ 6	$-0.41 \pm 0.09$	0.28 $\pm$ 0.09	$-0.27 \pm 0.10$	$-36 \pm 5$	24 $\pm$ 7	$-32 \pm 9$
Zhao96	-	113	140	106	-0.21
Fux99 all	1171	122	135	117	-0.13	0.03	-0.08	-25	10	-13
spheroid	571	122	131	127	-0.01	-0.01	-0.03	-1	-16	-17
disc	600	122	137	107	-0.24	0.07	-0.13	-31	13	-13

Notes. N is the number of stars, $\sigma _{\rm r}$ , $\sigma _{l}$ , $\sigma _{b}$ are the velocity dispersions, C_lr, C_br, C_lb are the cross-correlation terms, $l_v=\theta_{lr}$ , $\theta_{br}$ , $\theta_{lb}$ are the velocity ellipsoid angles. The values are computed for the full data set, the first and the last 33% quantiles of the metallicity distribution. The values predicted by the dynamical models of Zhao (1996) and Fux (1999), discussed in Sect. 5, are also provided. The velocity ellipsoid parameters of the Fux (1999) model are provided for all the stellar particles and also separately for the stellar particles originally in the disc and in the old spheroid.

Source LaTeX | All tables | In the text

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