Gemini GMOS spectroscopy of HeII nebulae in M 33 | Astronomy & Astrophysics (A&A)

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Table 6

Physical properties of WN atmosphere models for MC8.

Parameter	log L/L_⊙ = 5.3	log L/L_⊙ = 5.6	log L/L_⊙ = 5.9

T_∗ (kK)^a	90	90	90
T_eff (kK)^a	78	80	85
dM/dt (10^-5 M_⊙ yr^-1)	0.8	1.1	1.2
M_V (mag)	–3.4	–4.0	–4.4
log Q₀	49.16	49.47	49.76
log Q₁	48.92	49.24	49.55
log Q₂	38.40	46.46	48.32

Notes.

^(a)

The stellar temperature, T_∗, is derived from the Stefan-Boltzmann relation, with the stellar radius defined at a Rosseland optical depth of τ = 20. The effective temperature, T_eff, is similarly derived, using the effective radius defined at τ = 2/3.

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