A few Wolf-Rayet Stars

Wolf Rayet Stars
NAME CONST. HD RA (2000) DEC Mv B-V TYPE
MR99 CYG 190918 20 05 57.2 +35 47 19 7.48 +0.13 WN4.5+O9IA
MR100 CYG 191765 20 10 14.1 +36 10 36 8.31 +0.25 WN6
V1042 CYG 192103 20 11 53.5 +36 11 51 8.51 -0.06 WC8*
MR102 CYG 192163 20 12 06.5 +38 21 18 7.73 +0.25 WN6
MR103 CYG 192641 20 14 31.7 +36 39 40 8.18 +0.15 WC7+ABS*
MR104 CYG 193077 20 17 00.0 +37 25 25 8.21 +0.26 WN5+ABS
V444 CYG 193576 20 19 32.3 +38 43 54 8.27 +0.38 WN5+O6
MR107 CYG 193793 20 20 27.9 +43 51 16 7.19 +0.24 WC7+ABS*
CQ CEP 214419 22 36 53.9 +56 54 21 8.94 +0.33 WN7+O
EZ CMA 50896 06 54 12.9 -23 55 42 6.91 -0.89 WN5+B
MR64 SCO 151932 16 52 19.0 -41 51 16 6.49 -0.65 WN7a
MR65 SCO 152270 16 54 19.5 -41 49 12 6.59 -0.54 WC7+O5
MR84 SGR 165763 18 08 28.3 -21 15 11 8.25 -0.07 WC5*
MR12 VEL 68273 08 07 59.5 -47 11 18 1.74 -0.32 WC8+O9I

Data from the Yale Bright Star catalog and from van der Hucht (1981).

Label Description Units
NAME Standard name from van der Hucht (1981) catalog
CONST Constellation CYG Cygnus,
CEP Cepheus,
CMA Canis Major,
SCO Scorpius,
SGR Sagittarius
HD Henry Draper catalog identification number
RA Coordinate Right Ascension hours, minutes and seconds (preccessed to epoch J2000.0)
DEC Coordinate Declination degrees, minutes and seconds (J2000) must be visible from 45 degrees northern lattitudes
Mv Visual magnitude Almost half of the Wolf-Rayets brighter than magnitude 9 are in Cygnus !
B-V Colour excess smaller is bluer in colour
TYPE Spectral type WN for Nitrogen rich, WC for Carbon rich followed by a number from 1 to 9, hotter stars have a smaller number
* Star symbol indicates the digitized spectra is available

For amateur astronomers who prefer eyeballing the location visually, the following table provides crude star hops :

Star Hop Suggestions
Wolf
Rayet		 Const. Object Relative Location Uranometria
page number
MR99 CYG 7th mag star dead center of NGC6871 cluster p.119
MR100 CYG 8th mag star 20 arcmin west of V1042 p.119
V1042 CYG 8th mag star 50 arcmin southwest of star b3 CYG p.119
MR102 CYG 8th mag star dead center of nebula NGC6888 p.119
MR103 CYG 8th mag star 10 arcmin south of star b3 CYG p.119
MR104 CYG 8th mag double star 40 arcmin south of P CYG p.119
V444 CYG 8th mag variable 50 arcmin northeast of P CYG p.119
MR107 CYG 7th mag double 3 degrees north of gamma CYG p.84
CQ CEP 9th mag variable 2 deg southeast of delta CEP p.58
EZ CMA 7th mag variable 15 arcmin north of omicron1 CMA p.318
MR64 SCO 6th mag star 20 arcmin west of NGC 6231 cluster p.407
MR65 SCO 6th mag star dead center of NGC 6231 cluster p.407
MR84 SGR 8th mag star 1.2 deg west of mu SGR p.339

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