Wolf-Rayet stars in the Small Magellanic Cloud - I. Analysis of the single WN stars

R. Hainich; D. Pasemann; H. Todt; T. Shenar; A. Sander; W.-R. Hamann

doi:10.1051/0004-6361/201526241

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Volume 581 (September 2015)

A&A, 581 (2015) A21

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Table 1

Chemical composition (mass fractions in percent).

	Sun^a	MW/M 31	LMC	SMC
		WN^b	WN^c	B stars^d	B stars^e	H ii ^f	WN^g
C	0.237	0.01	0.0067	0.02	0.022	0.014	0.0025
N	0.069	1.5	0.40	0.003	0.018	0.0037	0.15
O	0.573	−	−	0.13	0.17	0.12	−
ΣCNO	0.88	1.51	0.41	0.1323	0.21	0.1377	0.1525
Fe	0.129	0.14^h	0.07^h	0.035ⁱ	0.027	−	0.03^h

Notes.

^(a)

Asplund et al. (2009);

^(b)

as used in Hamann et al. (2006) and Sander et al. (2014);

^(c)

as used in Hainich et al. (2014);

^(d)

Hunter et al. (2007);

^(e)

Korn et al. (2000);

^(f)

H ii regions (Kurt & Dufour 1998);

^(g)

as adopted in this work;

^(h)

including iron group elements;

⁽ⁱ⁾

mean value from Trundle et al. (2007).

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