The metal contents of two groups of galaxies | Astronomy & Astrophysics (A&A)

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Table 11

Comparison of the supernova yields to the measured abundances.

Parameter	DDTc	DDTa	WDD2	W7	Measured

NGC 5044
f	0.84	0.83	0.83	0.84
	38%	31%	36%	39%
C/Fe	0.19	0.19	0.19	0.21	1.5 ± 0.3
N/Fe	0.22	0.23	0.22	0.22	1.5 ± 0.2
O/Fe	0.6	0.6	0.6	0.6	0.60 ± 0.03
Mg/Fe	0.47	0.48	0.49	0.48	0.73 ± 0.05
Si/Fe	0.67	0.50	0.74	0.66	0.788 ± 0.012
S/Fe	0.76	0.51	0.74	0.62	0.843 ± 0.016
Ar/Fe	0.58	0.36	0.49	0.38	0.789 ± 0.013
Ca/Fe	0.96	0.56	0.71	0.47	1.86 ± 0.13
Ni/Fe	1.01	1.11	1.16	2.48	1.60 ± 0.05

NGC 5813
f	0.80	0.79	0.80	0.80
	32%	25%	32%	33%
C/Fe	0.23	0.23	0.24	0.25	1.7 ± 0.4
N/Fe	0.27	0.27	0.28	0.27	1.8 ± 0.3
O/Fe	0.73	0.73	0.73	0.73	0.73 ± 0.04
Mg/Fe	0.57	0.57	0.59	0.59	0.86 ± 0.06
Si/Fe	0.73	0.57	0.81	0.73	0.99 ± 0.03
Ca/Fe	0.98	0.60	0.74	0.51	1.9 ± 0.5

M 87^a
f	0.84	0.83	0.83	0.84
	38%	31%	36%	39%
C/Fe	0.19	0.19	0.19	0.21	0.74 ± 0.13
N/Fe	0.22	0.23	0.22	0.22	1.62 ± 0.21
O/Fe	0.6	0.6	0.6	0.6	0.60 ± 0.03
Ne/Fe	0.92	0.95	0.93	0.91	1.25 ± 0.12
Mg/Fe	0.47	0.48	0.49	0.48	0.60 ± 0.06

Notes. Yields based on the models by Badenes et al. (2003), Iwamoto et al. (1999) and Nomoto et al. (2006). Abundance ratios in proto-solar units by Lodders (2003). The ratio of the iron created by supernovae type Ia to the total amount of iron (see Eq. (5)), f, is calculated based on the O/Fe ratio using the assumption that all oxygen and iron have been created by supernovae.

^(a)

Values measured by Werner et al. (2006) are compared with the models used in this work.

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