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 10:

Results from the abundance analysis of HD 36591 (B1 V).
HD 36591	$T_{\rm eff}$ = 27 200 K, log g = 4.1 dex			$\xi_{\rm t}$ (Si)=1.3
Line	EW	$\Delta$ EW	$\epsilon_{\rm Si}$	$\Delta\epsilon_{\rm Si}$
	(mÅ)	(mÅ)	(dex)	(dex)
SiIII4552	158	2	7.52	0.03
SiIII4567	145	2	7.62	0.04
SiIII4574	104	2	7.65	0.04
SiIII5739	114	2	7.56	0.03
SiIV4089	80	2	7.54	0.05
SiIV4116	61	2	7.48	0.06
			$\epsilon_{\rm Si}$ = 7.53	$\Delta\epsilon_{\rm Si}$ ( $\sigma$ ) = 0.06
	$\Delta$ $\xi_{\rm t}$ (Si) = 0.3		$\Rightarrow$	$\Delta\epsilon_{\rm Si}$ ( $\xi_{\rm t}$ ) = 0.03

HD 36591	$T_{\rm eff}$ = 27 200 K, log g = 4.1 dex			$\xi_{\rm t}$ (O)=4.5
OII3945	69	2	8.80	0.04
OII3954	86	2	8.64	0.04
OII3982	62	2	8.64	0.04
OII4317	125	5	8.77	0.06
OII4319	114	2	8.76	0.03
OII4366	102	4	8.62	0.07
OII4414	144	2	8.61	0.03
OII4416	124	8	8.70	0.12
OII4452	53	3	8.59	0.07
OII4638	109	2	8.94	0.04
OII4641	145	2	8.84	0.03
OII4650	159	4	8.62	0.06
OII4661	113	2	8.83	0.03
OII4673	44	5	8.81	0.13
OII4676	97	4	8.70	0.07
OII4696	30	3	8.74	0.10
OII6641	48	2	8.90	0.04
OII6721	69	2	8.79	0.03
OII4072	113	7	8.65	0.13
OII4076	133	4	8.70	0.07
OII4078	56	3	8.77	0.08
OII4086	68	6	8.83	0.14
OII4891	34	3	8.67	0.09
OII4906	53	3	8.67	0.07
OII4941	48	2	8.54	0.04
OII4943	68	3	8.57	0.06
OII4956	24	3	8.77	0.11
			$\epsilon_{\rm O}$ = 8.71	$\Delta\epsilon_{\rm O}$ ( $\sigma$ ) = 0.10
	$\Delta$ $\xi_{\rm t}$ (O) = 0.3		$\Rightarrow$	$\Delta\epsilon_{\rm O}$ ( $\xi_{\rm t}$ ) = 0.04

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