Wolf-Rayet stars are massive stars that are very hot.
Because of this they will be VERY short lived and will only have a life time of millions of years as apposed to "normal" stars like our own Sun which will survive for billions of years.
See related questions.
No. White dwarfs are fairly dim. The brightest known stars are generally Wolf-Rayet stars.
Red dwarf star Wolf-Rayet star are two
Hyper giants live very short lives. Blue hyper giants end up as Wolf-Rayet stars most of the time.
Stephen Lee Skinner has written: 'A search for X-ray evidence of a compact companion to the unusual Wolf-Rayet star HD 50896 (EZ CMa)' -- subject(s): X rays, Wolf-Rayet stars, Plasmas (Physics), Emission spectra
Massive stars, such as blue supergiants and Wolf-Rayet stars, have the shortest lives because they burn through their fuel much faster due to their intense nuclear reactions. These stars can live for only a few million years before ending in a dramatic supernova explosion.
Considering the other oddity's in the Universe; Neutron stars, pulsars, Wolf Rayet stars, magnetar or even hypernovas, I don't think black holes are that odd.
A Wolf-Rayet star is a massive star greater than 20 Suns, which is losing mass rapidly by means of a very strong stellar wind, with speeds up to 2000 km/s.While our own Sun loses approximately 10−14 solar masses every year, Wolf-Rayet stars typically lose 10−5 solar masses a year.Wolf-Rayet stars are very hot, with surface temperatures in the range of 25,000 Kelvin to 50,000 Kelvin.The best known, and most visible, example is Gamma 2 Velorum which is a bright star visible to those located south of 40 degrees northern latitude.See related link for more information.
A Wolf-Rayet star is a massive star greater than 20 Suns, which is losing mass rapidly by means of a very strong stellar wind, with speeds up to 2000 km/s.While our own Sun loses approximately 10−14 solar masses every year, Wolf-Rayet stars typically lose 10−5 solar masses a year.Wolf-Rayet stars are very hot, with surface temperatures in the range of 25,000 Kelvin to 50,000 Kelvin.The best known, and most visible, example is Gamma 2 Velorum which is a bright star visible to those located south of 40 degrees northern latitude.See related link for more information.
Gayle L. Rawley has written: 'X-ray emission from Wolf-Rayet Stars with recurrent dust formation' -- subject(s): X-ray astronomy
; Binary Stars, Black Dwarf,Black Hole,Brown Dwarf,Galaxy,Main-Sequence Stars,Nebula,Neutron Star,Nova,Pulsar,Quasar,Red Giant,Supergiant,Supernova,Variable Star,White Dwarf,Wolf-Rayet Star...................
WR 104 is a Wolf-Rayet star located about 8,000 light years from us.