Wolf-Rayet Type Star Spectroscopy
 Shelyak Alpy 600 Spectrograph, 80mm f/6 APO & C925 @ f/6.3
Jim Ferreira, Livermore CA


Wolf-Rayet WR5-WC6, Alpy 600
Wolf-Rayet star WR5, a WC6, carbon type star



Spectroscopic double star WR133
Wolf-Rayet star raw spectra, Alpy 600

Wolf-Rayet star WR133 spectra, Alpy 600
The spectrum of Wolf-Rayet star WR133 is blend of the WN5 WR star and an O9 supergiant star

Spectrum comarison WR133 & WR136, Alpy 600
Balmer absorption lines overlay emission peaks in the WR star, reducing emission line intensity


V444 Cyg (WR139), Alpy 600
The spectrum of Wolf-Rayet star WR139 (V444 Cyg) is blend of the WN5 WR star and an O6 giant star

V444 Cyg, doppler comparison, Alpy 600
V444 Cyg varies in brightness between 7.92 and 8.22 mV -- above are spectra collected over 3 months show doppler shift extremes and variations in line intensity
for C, N and He emission lines.  Orbital phase for the displayed spectra have not yet been calculated, additional spectra at various orbital phases are being collected
to cover V444 Cyg's 4.21 day orbit.  Alpy 600, C9@f/6.3 and Atik 420M CCD.

V444 Cyg, doppler extremes, Alpy 600

V444 Cyg, doppler extremes, Alpy 600
Above are details of doppler extremes for V444 Cyg, Alpy 600.

V444 Cyg Doppler

V444 Cyg doppler 5411A

V444 Cyg

V444 Cyg doppler


WR140, Alpy 600
The spectrum of Wolf-Rayet star WR140 is blend of the WC7 WR star and an O4 dwarf star

WR136, Alpy 600
Spectrum of WR136 WN3 Wolf-Rayet star, central star of NGC6888, Alpy 600

Wolf-Rayet WR138, WR139 - Alpy 600
Comparison of Wolf-Rayet stars WR138 and WR139 (V444 Cyg), both showing H-Balmer absorption lines -- their spectra are near mirror images of each other!

WR134 spectra, Alpy 600
Spectrum of Wolf-Rayet WR134 (V1769 Cyg), Alpy 600



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