Abundance ratios in the hot ISM of elliptical galaxies

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Table 1

Model set-up and average stellar abundance ratios.

Model		YIELDS		SNIa RATE	DUST	[⟨ Fe/H ⟩]	[⟨ Mg/Fe ⟩]	[⟨ Ca/Mg ⟩]	[⟨ Ca/Fe ⟩]	[⟨ α/Fe ⟩]
name	SNII	SNIa	progen.	A

1a	K002	W7	SD	0.09	off	0.133	0.209	–0.07	0.038	0.308
1ad	K002	W7	SD	0.09	on
1afd	K002	W7	SD	0.09	only Fe
1b	K0001	W7	SD	0.09	off
1c	K002	W7,5xMg	SD	0.09	off
1cd	K002	W7,5xMg	SD	0.09	on
1cfd	K002	W7,5xMg	SD	0.09	only Fe

2a	K002	WDD1	SD	0.09	off	0.034	0.251	0.045	0.161	0.354
2ad	K002	WDD1	SD	0.09	on
2afd	K002	WDD1	SD	0.09	only Fe

3a	K002	C-DDT	SD	0.09	off	–0.08	0.329	–0.188	0.100	0.416
3ad	K002	C-DDT	SD	0.09	on
3afd	K002	C-DDT	SD	0.09	only Fe
3b	K0001	C-DDT	SD	0.09	off

4a	K002	W7	SD	0.09t < t_gw	off	0.133	0.209	–0.07	0.038	0.308
				0.01 otherwise
4b	K002	W7	SD	0.09t < 11 Gyr	off
				0.01 otherwise
4c	K002	W7	SD	0.09t < 8 Gyr	off
				0.01 otherwise
				0.01 otherwise

5a	K002	W7	DD	f(t)	off	–0.348	0.421	–0.175	0.212	0.514

Notes. The reader should note that once the yields and the SNIa progenitor are specified, the abundances in the stars do not change. Therefore we report them for each “class” of models, irrespective of the t > t_gw modifications.

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