Global appearance of spectra (
Chandra
MEG)
z
Pup
(O4 I)
z
Ori
(O9.5 II)
d
Ori
(O9.7 I)
q
1
Ori C
(O7 V)
t
Sco
(B0 V)
b
Cru
(B0.5 IV)
10
10
20
20