The chemical composition of the Orion star forming region - I. Homogeneity of O and Si abundances in B-type stars

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Volume 510 (February 2010)

A&A, 510 (2010) A22

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Table 6:

Results from the abundance analysis of HD 36512 (B0 V).
HD 36512	$T_{\rm eff}$ = 33 700 K, log g = 4.2 dex			$\xi_{\rm t}$ (Si)=4.3
Line	EW	$\Delta$ EW	$\epsilon_{\rm Si}$	$\Delta\epsilon_{\rm Si}$
	(mÅ)	(mÅ)	(dex)	(dex)
SiIII4552	117	4	7.51	0.07
SiIII4567	99	5	7.58	0.08
SiIII4574	50	4	7.53	0.09
SiIV4089	189	5	7.42	0.06
SiIV4116	166	5	7.54	0.07
SiIV4212	53	3	7.46	0.06
SiIV4631	75	4	7.40	0.06
			$\epsilon_{\rm Si}$ = 7.49	$\Delta\epsilon_{\rm Si}$ ( $\sigma$ ) = 0.07
	$\Delta$ $\xi_{\rm t}$ (Si) = 0.7		$\Rightarrow$	$\Delta\epsilon_{\rm Si}$ ( $\xi_{\rm t}$ ) = 0.05

HD 36512	$T_{\rm eff}$ = 33 700 K, log g = 4.2 dex			$\xi_{\rm t}$ (O)=4.4
Line	EW	$\Delta$ EW	$\epsilon_{\rm O}$	$\Delta\epsilon_{\rm O}$
	(mÅ)	(mÅ)	(dex)	(dex)
OII3945	36	5	8.81	0.13
OII3954	63	5	8.86	0.09
OII3982	29	5	8.63	0.14
OII4317	78	11	8.74	0.16
OII4319	75	5	8.77	0.08
OII4366	70	8	8.70	0.14
OII4414	89	6	8.55	0.09
OII4416	76	9	8.66	0.15
OII4452	25	10	8.59	0.33
OII4641	95	12	8.69	0.20
OII4661	82	4	8.88	0.07
OII4673	23	3	8.83	0.12
OII4676	61	5	8.67	0.10
OII4696	13	6	8.73	0.37
OII6721	30	8	8.71	0.20
OII4072	84	8	8.62	0.15
OII4076	101	6	8.64	0.11
OII4078	33	6	8.73	0.18
OII4086	48	8	8.88	0.20
OII4089	77	6	8.63	0.10
OII4891	19	5	8.65	0.20
OII4906	34	5	8.67	0.13
OII4943	46	3	8.59	0.06
			$\epsilon_{\rm O}$ = 8.71	$\Delta\epsilon_{\rm O}$ ( $\sigma$ ) = 0.10
	$\Delta$ $\xi_{\rm t}$ (O) = 1.5		$\Rightarrow$	$\Delta\epsilon_{\rm O}$ ( $\xi_{\rm t}$ ) = 0.05

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