Metallicity of low-mass stars in Orion | Astronomy & Astrophysics (A&A)

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Volume 501 / No 3 (July III 2009)

A&A, 501 3 (2009) 973-983

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Table 3:

Final stellar parameters and metallicity values derived for ONC stars¹.
Star	r	$T_{\rm eff}$	$\log~g$	$\xi$	$v\sin i$	[Fe/H] $\pm$ $\sigma_1$ $\pm$ $\sigma_2$
		(K)		(km s^-1)	(km s^-1)	(EWs)	(Spec. Synth.)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
223a	$0.02 \pm 0.04$	4450	3.8	1.6	--	$0.03\pm0.06\pm 0.07$ (18)	--
268	$0.03 \pm 0.04$	4300	3.9	1.6	$10~\pm~3$	$-0.08\pm 0.16\pm 0.09$ (25)	$-0.1\pm 0.1\pm 0.1$
278	$0.8 \pm 0.07$	4395	--	--	--	--	--
487	$0.02 \pm 0.02$	4300	3.9	1.7	$15~\pm~3$	$-0.07\pm 0.08\pm 0.09$ (18)	$0\pm 0.1\pm 0.09$
673	$0.04 \pm 0.03$	4700	4.0	1.5^*	$20~\pm~3$	$0.0\pm 0.1\pm 0.07$ (18)	$0\pm 0.1 \pm 0.08$
683	$0.0 \pm 0.02$	4250	3.3	1.6	$13~\pm~3$	$0.01\pm 0.1\pm 0.08$ (22)	$-0.1\pm 0.1 \pm 0.09$
907	$0.01 \pm 0.03$	4775	4.1	1.5	$35~\pm~3$	--	$0.0\pm 0.1 \pm 0.11$
664	0^**	4200	4.1	1.6	13 $\pm~3$	--	$0.05\pm 0.1\pm 0.1$
1020	0^**	4200	3.8	1.6	13 $\pm~3$	--	$0.0\pm 0.1\pm 0.1$
VXR76A (list $_{\rm CD3}$ )	--	4340	4.5	1.2	$8~\pm~3$	$0.00\pm 0.06 \pm 0.09$ (25)	$0 \pm 0.1\pm 0.1$
VXR76A (list $_{\rm CD4}$ )	--	4400	4.5	1.3	$8~\pm~3$	$-0.01\pm 0.08\pm 0.08$ (23)	$0 \pm 0.1\pm 0.1$

^* The initial microturbulence was adopted for this star, since $\xi$ could not be optimized due to the lack of lines covering a wide enough EW interval.

^** r values for stars 664 and 1020 come from Palla et al. (2005).
¹ In the table we list the star ID, the veiling r, adopted stellar parameters, projected rotational velocities, and the final [Fe/H] values, from the EW and synthesis analysis, along with $\sigma_1$ and $\sigma_2$ errors (see text). For [Fe/H] from EWs we also provide in parenthesis the number of employed Fe I lines.

Source LaTeX | All tables | In the text

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