WR1.DAT
Wolf-Rayet stars
The Wolf-Rayet stars are massive stars (more
than 25 solar masses), in a advanced stage of evolution and ejecting at high
speed a hot gas (winds of 2000 km/s typically). They have exceptional hot surface temperature,
about 100.000 K. The spectrum presents strong emission widened lines. Wolf-Rayet
stars have lost their atmospheres and have exposed their heavy cores. One finds
there the signature of ions of helium, carbon, nitrogen and oxygen in the spectra.
There are 2 class Wolf-Rayet star: type WN where dominates the ions of helium and nitrogen and type WC where dominates the ions of carbon, oxygen and helium.
The Wolf-Rayet stars are very rare. One counts some hardly more than 150 in our galaxy. One will find below a list of bright Wolf-Rayet accessible since the northern hemisphere. The co-ordinates are into 2000.0 equinox.
WR HD R.A. Dec. Type V
1 4004 0
43 28.4 +64 45 35 WN5 10.12
2 6327 1 05
23.0 +60 25 19 WN2 11.43
3 9974 1 38
55.7 +58 09 23 WN3 10.62
4 16523 2 41 11.6
+56 43 50 WC5 9.98
5 17638 2 52 11.7
+56 56 07 WC6 10.51
6 50896 6 54 13.0
-23 55 42 WN5 6.74
7 56925 7 18 29.2
-13 13 01 WN4 11.74
110 165688 18 07 57.0 -19
23 56 WN6 9.81
111 165763
18 08 28.5 -21 15 11 WC5
7.68
113 168206 18
19 07.4 -11 37 58 WC8 9.18
123 177230 19 03 59.0 -04
19 02 WN8 10.88
127 186943
19 46 15.9 +28 16 19 WN4
10.19
128 187282 19 48 34.2
+18 11 32 WN4 10.50
132 190002 20 01 41.8 +32
34 40 WC6 11.55
133
190918 20 05 57.3 +35
47 17 WN4 6.78
134 191765
20 10 14.2 +36 10 35 WN6
8.02
135 192103
20 11 53.5 +36 11 51 WC8
8.51
136 192163 20
12 06.5 +38 21 17 WN6 7.44
137 192641 20
14 31.8 +36 39 39 WC7 7.95
138 193077 20 17 00.0 +37
25 23 WN5 8.06
139 193576
20 19 32.4 +38 43 54 WN5
8.27
140 193793 20
20 28.1 +43 51 17 WC7 6.88
141 193928 20 21 31.8 +36
55 13 WN6 9.74
143 195177
20 28 24.3 +38 36 55 WC5
12.32
148 197406 20 41 21.6
+52 35 16 WN7 10.30
152 211564 22 16 35.7 +55
36 55 WN3 11.62
153 211853
22 18 45.6 +56 07 35 WN6
9.03
154 213049 22
27 17.7 +56 15 12 WC6 10.94
155 214419 22 36 54.0 +56
54 21 WN7 8.86
157 219460
23 15 12.6 +60 27 01 WN4
10.13
The spectral data were reduced in the standard manner using Iris and VisualSpec. The instrumental response function was removed from target spectra by using standard star spectra. The relative flux is normalized at the wavelength 6630 angstroms.
Instrument: Takahashi FS-128 apochromatic refractor + a R=1000 spectrograph (sample of 2.88 A/pixel). Click here for a description of the spectrograph used.
WR133 spectrum acquired with the
spectr'aude spectrograph and a Takahashi FSQ-106 refractor - dispersion
of 4.00 A/pixel:
Left, the WR135 spectrum carried out with the 200 lines/mm grating associated with a prism of 3°57 ' in order to forme a grism. The unit is placed 63 mm in front of the CCD surface. Note that it is possible to obtain quite fine emission lines to the detriment of the quality of the zero order image. Right, the grating and the prism are slipped into a filters older interposing between a 190-mm telescope and the Audine CCD camera:
The spectrum of WR135 (sampling of 16.9 A/pixel):
Grism assembly (16.4 A/pixel) + a 190-mm flat-field
camera + Audine camera Kodak KAF-0400.
Instrument: Takahashi FS-128 apochromatic refractor + a R=1000 spectrograph (sample of 2.88 A/pixel). Click here for a description of the spectrograph used.
Grism assembly (16.4 A/pixel) + a 190-mm flat-field
camera + Audine camera Kodak KAF-0400.
WR140 specrum taken with the spectr'aude and
a Takahashi FSQ-106 refractor - dispersion of 4.00 A/pixel:
