Abundances in the Galactic bulge: results from planetary nebulae and giant stars

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Volume 494 / No 2 (February I 2009)

A&A, 494 2 (2009) 591-610

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Table 2:

Median abundance values (number of objects).
	Bulge PNe		Inner-disk PNe		LMC PNe		Bulge giants		Sun^a	HII regions^b
$\log\epsilon$ (He)	11.11 [11.05, 11.19]	(144)	11.08 [11.02, 11.14]	(56)	11.00 [10.92, 11.07]	(99)	-		10.93 $\pm$ 0.01	-
$\log\epsilon$ (O)	8.57 [8.40, 8.72]	(117)	8.51 [8.28, 8.66]	(44)	8.24 [8.05, 8.39]	(87)	8.91 [8.82, 9.02]	(42)	8.66 $\pm$ 0.05	-
$\log\epsilon$ (Ar)	6.34 [6.05, 6.56]	(120)	6.26 [5.76, 6.50]	(49)	5.90 [5.75, 6.02]	(87)	-		6.18 $\pm$ 0.08	-
$\log\epsilon$ (Ne)	7.93 [7.71, 8.17]	(77)	7.91 [7.61, 8.09]	(36)	7.62 [7.42, 7.80]	(85)	8.22 [8.02, 8.31]	(48)	7.84 $\pm$ 0.06	-
$\log\epsilon$ (S)	6.79 [6.54, 7.04]	(94)	6.67 [6.45, 6.98]	(36)	6.44 [6.30, 6.60]	(63)	7.08 [6.83, 7.31]	(23)	7.14 $\pm$ 0.05	-
$\log\epsilon$ (N)	8.11 [7.76, 8.50]	(123)	7.99 [7.42, 8.34]	(45)	7.75 [7.35, 8.15]	(85)	8.40 [8.09, 8.49]	(48)	7.78 $\pm$ 0.06	-
$\log\epsilon$ (Cl)	6.22 [6.00, 6.50]	(47)	6.27 [5.97, 6.63]	(19)	5.67 [-, -]	(4)	-		5.50 $\pm$ 0.30	-
log (S/O)	-1.74 [-1.91, -1.59]	(127)	-1.79 [-2.03, -1.63]	(42)	-1.79 [-1.99, -1.54]	(80)	-1.64 [-1.78, -1.58]	(22)	-1.52	-1.696, -1.739
log (Ne/O)	-0.62 [-0.74, -0.52]	(90)	-0.59 [-0.70, -0.48]	(46)	-0.67 [-0.78, -0.52]	(99)	-0.78 [-0.90, -0.64]	(64)	-0.82	-0.834, -0.688
log(Ar/O)	-2.22 [-2.38, -2.05]	(141)	-2.22 [-2.41, -2.08]	(51)	-2.35 [-2.48, -2.13]	(96)	-		-2.48	-2.441, -2.376
log (S/Ar)	0.46 [0.31, 0.61]	(111)	0.39 [0.23, 0.59]	(37)	0.52 [0.39, 0.66]	(69)	-		0.96	0.745, 0.637
log (N/O)	-0.39 [-0.68, -0.11]	(136)	-0.55 [-0.77, -0.27]	(50)	-0.51 [-0.89, 0.00]	(85)	-0.54 [-0.75, -0.45]	(42)	-0.88	-
log (N/Ar)	1.86 [1.60, 2.05]	(138)	1.81 [1.51, 1.95]	(45)	1.86 [1.55, 2.22]	(84)	-		1.6	-

^a Asplund et al. (2005); ^b Izotov et al. (2006).

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