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Heterogeneous class of stars with unusual spectra
Wolf–Rayet stars, often abbreviated as WR stars, are a rare heterogeneous set of stars with unusual spectra showing prominent broad emission lines of
Wolf–Rayet_star
Topics referred to by the same term
Wolf–Rayet (WR) can mean: Wolf–Rayet star, a type of evolved, massive star Wolf–Rayet galaxy, which contains large numbers of Wolf–Rayet stars Wolf–Rayet nebula
Wolf–Rayet
Commune in Nouvelle-Aquitaine, France
Rayet is a commune in the Lot-et-Garonne department in south-western France. Communes of the Lot-et-Garonne department "Répertoire national des élus:
Rayet
Nebula which surrounds a Wolf–Rayet star
A Wolf–Rayet nebula is a type of nebula created from stellar winds expelled by Wolf–Rayet stars. Wolf–Rayet stars are very hot, highly luminous, and rapidly
Wolf–Rayet_nebula
Wolf–Rayet stars, often abbreviated as WR stars, are a rare heterogeneous set of stars with unusual spectra showing prominent broad emission lines of
List_of_Wolf–Rayet_stars
French astronomer (1839–1906)
Georges-Antoine-Pons Rayet (12 December 1839 – 14 June 1906) was a French astronomer. He was born in Bordeaux, France. He began working at the Paris Observatory
Georges_Rayet
French ballet dancer (1933–2026)
Jacqueline Rayet (French: [ʒaklˈin ʁɛjˈɛ]; 26 June 1933 – 17 April 2026) was a French ballet dancer. A Paris native, Rayet attended the Paris Opera Ballet
Jacqueline_Rayet
List of the hottest known stars
luminous stars List of least massive stars List of coolest stars "Wolf-Rayet Star Catalogue". pacrowther.staff.shef.ac.uk. Retrieved 2021-05-28. Sander
List_of_hottest_stars
Jordanian prince
Hashim, born on 6 April 2007 in Amman, Jordan.[citation needed] Princess Rayet Al-Noor bint Hashim, born on 4 July 2008. Princess Fatima Al-Alia bint Hashim
Prince_Hashim_bin_Hussein
Astronomical object
A pinwheel nebula is a class of Wolf–Rayet nebula in the shape of a pinwheel. Some Wolf–Rayet stars are surrounded by pinwheel nebulae. These nebulae are
Pinwheel_nebula
Astrophysical phenomenon
atmospheres and evolve to Wolf–Rayet stars before their cores collapse. All Wolf–Rayet stars end their lives from the Wolf–Rayet phase within a million years
Supernova
list includes massive Wolf–Rayet stars, which may become Type Ib/Ic supernovae, particularly oxygen-sequence (Wolf–Rayet WO) stars. As of 2023, most
List_of_supernova_candidates
Open cluster
heavily obscured region of the Milky Way in Cygnus. The rare WO type Wolf–Rayet star WR 142 is a member of Berkeley 87. This cluster contains HD 229059
Berkeley_87
Triple-star system in the constellation Norma
Apep is a triple star system containing a Wolf–Rayet binary and a hot supergiant, located in the constellation of Norma. Named after the serpent deity
Apep_(star_system)
Classification of stars based on spectral properties
nitrogen, or sometimes oxygen. Once included as type O stars, the Wolf–Rayet stars of class W or WR are notable for spectra lacking hydrogen lines. Instead
Stellar_classification
Wolf–Rayet star in the constellation Dorado
(M☉) and around 7.2 million times the Sun's luminosity (L☉). It is a Wolf–Rayet star at the center of R136, the central concentration of stars of the large
R136a1
Star in the constellation Sagittarius
WR 102 is a Wolf–Rayet star in the constellation Sagittarius, an extremely rare star on the WO oxygen sequence. It is a luminous and very hot star, highly
WR_102
French archaeologist
Olivier Rayet (23 September 1847, Le Cairou – 19 February 1887, Paris) was a French archaeologist. From 1866 he studied geography and ancient history
Olivier_Rayet
Star in the constellation of Cygnus
WR 134 is a variable Wolf-Rayet star located around 6,000 light years away from Earth in the constellation of Cygnus, surrounded by a faint bubble nebula
WR_134
Mexican politician
Juan Manuel Vega Rayet (born 22 September 1959) is a Mexican politician affiliated with the Institutional Revolutionary Party (PRI). In the 2003 mid-terms
Juan_Manuel_Vega_Rayet
X-ray binary in Galaxy NGC 300
hole orbiting a Wolf–Rayet star (specifically of WN spectral type), making it one of only a few confirmed extragalactic Wolf–Rayet-black hole binary systems
NGC_300_X-1
Emission nebula in the constellation Dorado
NGC 2020 is an HII Region surrounding the Wolf-Rayet star BAT99-59. It is located in the Large Magellanic Cloud. The nebula was discovered on 30 December
NGC_2020
Star in the constellation Dorado
BAT99-98 is a Wolf–Rayet star located in the Large Magellanic Cloud, in NGC 2070 near the R136 cluster in the Tarantula Nebula (30 Doradus). At estimates
BAT99-98
Jordanian princess
and two sons: Princess Haalah bint Hashim, born on 6 April 2007 Princess Rayet Al-Noor bint Hashim, born on 4 July 2008. Princess Fatima Al-Alia bint Hashim
Princess_Fahdah_Hashim
Triple star system in the constellation Sagittarius
located about 2,580 parsecs (8,400 ly) from Earth. The primary star is a Wolf–Rayet star (abbreviated as WR), which has a B0.5 main sequence star in close orbit
WR_104
Star in the constellation of Cygnus
WR 140 is a spectroscopic binary containing an O-type star and a Wolf–Rayet star. It is located in the constellation of Cygnus, lying in the sky at the
WR_140
Crater on the Moon
Rayet is a small lunar impact crater that lies on the far side of the Moon, past the northeast limb. It lies to the southwest of the larger crater Millikan
Rayet_(crater)
Wolf-Rayet galaxy and dwarf galaxy in the constellation Boötes
1415+437, also known as PGC 51017, is a blue compact dwarf galaxy and Wolf-Rayet galaxy located in the constellation Boötes approximately 45.3 million light-years
SBS_1415+437
Galaxy in the constellation Ursa Major
its gaseous disk. A detailed study of the Wolf-Rayet population revealed a large number of Wolf-Rayet stars in its brightest stellar component. The stellar
UGC_6541
Nebula in the constellation Sagitta
M1-67 is an ejecta nebula that surrounds the Wolf–Rayet star WR 124, which is about 6.4 kpc from Earth in the constellation of Sagitta. It contains dust
M1-67
Galaxy undergoing an exceptionally high rate of star formation
distant ULIRGs. Wolf–Rayet galaxies (WR galaxies), galaxies where a large proportion of the bright stars are Wolf–Rayet stars. The Wolf–Rayet phase is a relatively
Starburst_galaxy
Super star cluster in the constellation Dorado, in the Large Magellanic Cloud
object (catalogued as HD 38268 and Wolf–Rayet star Brey 82) but is now known to include 72 class O and Wolf–Rayet stars within 5 parsecs (20 arc seconds)
R136
High-mass X-ray binary
corresponds to a high-mass X-ray binary in which the normal star is a Wolf–Rayet star and the compact object is a stellar black hole. The mass of this black
IC_10_X-1
Flash of gamma rays from a distant galaxy
galaxy of the stars producing long gamma-ray bursts are likely the Wolf–Rayet stars, extremely hot and massive stars, which have shed most or all of their
Gamma-ray_burst
Super star cluster in the Milky Way Galaxy
supergiants including Westerlund 1 W26, one of the largest known stars, 24 Wolf-Rayet stars, a luminous blue variable, many OB supergiants, and an unusual supergiant
Westerlund_1
Rare star with tremendous luminosity and high rates of mass loss by stellar winds
supernova, hypernova or completely shed their outer layers to become a Wolf–Rayet star. Stars with an initial mass above about 40 M☉ are simply too luminous
Hypergiant
High mass X-ray binary in the constellation of Cygnus
ordinary star companion. It is one of only two known HMXBs containing a Wolf–Rayet star. It is invisible visually, but can be observed at radio, infrared,
Cygnus_X-3
Hot, luminous star with a spectral type of A9 or earlier
mass to evolve safely into old age as a Wolf Rayet star and finally a white dwarf, or they reach the Wolf Rayet stage and explode as supernovae, or they explode
Blue_supergiant
Triple star system in the constellation Tucana
unusual primary has a Wolf–Rayet spectrum and has produced a luminous blue variable (LBV) outburst; the secondary, also a Wolf–Rayet star, forms an eclipsing
HD_5980
Wolf-Rayet star in the galaxy IC 1613
DR1 is a solitary Wolf-Rayet (WR) star in the irregular dwarf galaxy IC 1613, located approximately 721 kiloparsecs (2,350,000 light-years) away in the
DR1_(star)
Interstellar clouds in the constellation Carina
related open clusters, including numerous O-type stars and several Wolf–Rayet stars. Carina OB1 encompasses the star clusters Trumpler 14 and Trumpler
Carina_Nebula
Star in the constellation Cassiopeia
WR 1 is a Wolf–Rayet star located around 10,300 light years away from Earth in the constellation of Cassiopeia. It is only slightly more than twice the
WR_1
Rotational center of the Milky Way galaxy
red giants, with a significant population of massive supergiants and Wolf–Rayet stars from star formation in the region around 1 million years ago. The
Galactic_Center
Binary star located in the Small Magellanic Cloud in the constellation Hydrus
as SMC WR8, is a binary star in the Small Magellanic Cloud (SMC). A Wolf–Rayet star and a main-sequence companion of spectral type O orbit in a period
AB8_(star)
Emission nebula in the constellation Cygnus
William Herschel in 1792. It is formed by the fast stellar wind from the Wolf-Rayet star WR 136 (HD 192163) colliding with and energizing the slower moving
Crescent_Nebula
distant and the Triangulum Galaxy is around 3.2 Mly distant List of Wolf–Rayet stars List of luminous blue variable stars List of nearest stars by spectral
List_of_O-type_stars
Wolf-Rayet star in the constellation Sagitta
WR 128 is a Wolf–Rayet star located about 9,500 light years away in the constellation of Sagitta. A member of the WN class, WR 128's spectrum resembles
WR_128
Open cluster in the constellation Scorpius
unexpected. The evolution of Wolf–Rayet stars and Of stars in star clusters is currently unclear. Very few Wolf–Rayet stars have been found in star clusters
HM_1
Star in the constellation Musca
containing a Wolf-Rayet star and two massive companions. With an apparent magnitude of 5.5, it is the second-brightest Wolf–Rayet star in the sky, although
Theta_Muscae
Star system in the constellation Vela
stars in the night sky, and contains by far the closest and brightest Wolf–Rayet star. It has the traditional name Suhail al Muhlif and the modern name Regor
Gamma_Velorum
Star in the constellation of Cygnus
WR 142 is a Wolf–Rayet star in the constellation Cygnus, an extremely rare star on the WO oxygen sequence. It is a luminous and very hot star, highly
WR_142
Binary star system in the constellation Canis Major
constellation of Canis Major. The primary is a Wolf–Rayet star and it is one of the ten brightest Wolf-Rayet stars, brighter than apparent magnitude 7. L. W
EZ_Canis_Majoris
Emission nebula or WR* in Canis major
brightest star in the night sky. The nebula is bubble-like and surrounds a Wolf–Rayet star named EZ Canis Majoris. This star is in the brief, pre-supernova phase
Sh_2-308
Constellation in the southern celestial hemisphere
Gamma Velorum, one component of which is the closest and brightest Wolf-Rayet star in the sky. Delta and Kappa Velorum, together with Epsilon and Iota
Vela_(constellation)
Star in the constellation Sagittarius
WR 111 (HD 165763) is a Wolf-Rayet (WR) star in the constellation Sagittarius. It is magnitude 7.8 and lies about 5,150 light-years away. It is one of
WR_111
Australian astronomer
Experiment, Tuthill for the first time revealed pinwheel nebulae around Wolf–Rayet stars, formed by winds colliding with their binary companions. The most
Peter_Tuthill_(astronomer)
Skyscraper in Buenos Aires
Château Puerto Madero Residence) for US$35 million to Madrid-based developer Rayet for the construction of the Hotel Único Buenos Aires. Originally scheduled
Alvear_Tower
Type Ic supernova in galaxy LEDA 987574
It is notable for its association with the explosion of a massive Wolf–Rayet star in a binary system and is a potential candidate for a binary black
SN_2022esa
Infrared and radio emitting object near the Galactic Center
classified as a Wolf–Rayet star because of its strong emission line spectrum, and named WR 101f. It was then resolved into seven Wolf–Rayet and class O stars
GCIRS_13E
Planetary nebula in the constellation Draco
X-ray wavelengths. At the centre of the Cat's Eye Nebula is a dying Wolf–Rayet star, the sort of which can be seen in the Webb Telescope's image of WR
Cat's_Eye_Nebula
Irregular starburst galaxy in the constellation Cassiopeia
status of the Wolf–Rayet stars suggests that they all formed in a relatively short timespan. The ratio between the two types of Wolf–Rayet stars (WC stars
IC_10
Star in the constellation of Cygnus
WR 136 is a Wolf–Rayet star located in the constellation Cygnus. It is in the center of the Crescent Nebula. Its age is estimated to be around 4.7 million
WR_136
Wolf-Rayet star in the constellation Dorado
BAT99-7 is a WN-type Wolf-Rayet star located in the Large Magellanic Cloud, in the constellation of Dorado, about 160,000 light years away. The star has
BAT99-7
Wolf-Rayet star in the constellation of Scorpius
WR 93b is a Wolf-Rayet star in the constellation Scorpius, an extremely rare star on the WO oxygen sequence. It appears near NGC 6357 in the tail of the
WR_93b
Star at the centre of the Solar System
branch post-AGB super-AGB Blue loop Planetary nebula Protoplanetary Wolf–Rayet nebula PG1159 Dredge-up OH/IR Instability strip Luminous blue variable Stellar
Sun
Star in the constellation Sagitta
WR 124 is a Wolf–Rayet star in the constellation of Sagitta surrounded by a ring nebula of expelled material known as M1-67. It is one of the fastest
WR_124
massive stars List of hottest stars List of coolest stars List of Wolf-Rayet stars List of luminous blue variable stars List of O-type stars List of
Lists_of_stars
Multiple star system in the constellation Carina
known to be spectroscopic binaries. A1a, A1b,B and C are all WN6h Wolf–Rayet stars, amongst the most massive and luminous known. There are several dozen
HD_97950
Galaxy in the constellation Pyxis
classification as a Wolf–Rayet galaxy, a special subclass of starburst galaxy that features a higher than normal number of Wolf–Rayet stars. Furthermore, observations
Hen_2-10
Star in the Triangulum Galaxy
brightest. Although Romano's Star has a Wolf–Rayet spectrum, it is not a classical hydrogen-free Wolf–Rayet star. It still shows about 70% more hydrogen
Romano's_Star
Binary star in the Large Magellanic cloud
Melnick 34 (abbreviated to Mk34), also called BAT99-116, is a binary Wolf–Rayet star near R136 in the 30 Doradus complex (also known as the Tarantula Nebula)
Melnick_34
2015 hypernova event in the constellation Indus
Other hypotheses include gravitational lensing, a quark nova inside a Wolf–Rayet star, or a rapid magnetar spindown. A possible supernova was first noticed
ASASSN-15lh
Planetary nebula in the constellation Musca
white dwarf companion in a 4.04 day orbit around the rare low-mass Wolf-Rayet type central star of NGC 5189. NGC 5189 is estimated to be 546 parsecs or
NGC_5189
Galaxy in the constellation Cetus
ultraluminous infrared galaxy. IRAS 01003−2238 is also classified as a Wolf-Rayet galaxy, making the object one of the most distant known. IRAS 01003−2238
IRAS_01003−2238
Triple star system in the constellation Carina
contains a Wolf–Rayet star and two O-type stars and is a member of the Trumpler 16 cluster. The name comes from the Catalogue of Galactic Wolf–Rayet Stars. WR
WR_25
Topics referred to by the same term
syphilis Water Resistant mark, stamped on wrist watches Wolf-Rayet star, in astronomy Wolf-Rayet galaxy, in astronomy Wreath product, in group theory Welter
WR
Wolf–Rayet star in the constellation Dorado
LMC195-1 is a Wolf–Rayet star located in the Large Magellanic Cloud (LMC). It is an extremely rare member of the WO oxygen sequence, at WO2 the hottest
LMC195-1
Planetary nebula
nitrogen and helium features may be linked to nitrogen sequences of Wolf-Rayet central stars of planetary nebula ([WN]). The chemical composition of this
M2-42
Densest star cluster known
thirteen Wolf–Rayet stars, all massive hydrogen-rich types; and eight class O hypergiants. One of these is an eclipsing binary with a Wolf–Rayet primary and
Arches_Cluster
Star in the constellation Dorado
R136a2 (RMC 136a2) is a Wolf-Rayet star residing near the center of the R136, the central concentration of stars of the large NGC 2070 open cluster in
R136a2
Sudden release of heat and gas
M. (2003). "The dynamics of the nebula M1-67 around the run-away Wolf-Rayet star WR 124". Astronomy and Astrophysics. 398: 181–194. arXiv:astro-ph/0211326
Explosion
Topics referred to by the same term
WC4 asteroid 1994 WC4, see 9083 Ramboehm WC4 star spectral type, see Wolf–Rayet star WC4, a parasport cycling classification, see C4 (classification) Dodge
WC4
Binary star in the Small Magellanic Cloud in the constellation Tucana
known as SMC WR7, is a binary star in the Small Magellanic Cloud. A Wolf–Rayet star and a supergiant companion of spectral type O orbit in a period of
AB7
Star in the constellation of Cygnus
WR 137 is a variable Wolf-Rayet star located around 6,000 light years away from Earth in the constellation of Cygnus. WR 137, together with WR 134 and
WR_137
Wolf-Rayet star
WR 16 (HD 86161) is a Wolf-Rayet star located in the constellation Carina. It is a massive, luminous, and evolved star in a late stage of evolution, surrounded
WR_16
Planetary nebula in the constellation Cygnus
of [WO3], indicating a spectrum similar to that of an oxygen-rich Wolf–Rayet star. An analysis of Gaia data suggests that it is a binary system. "Search
NGC_7026
Galaxy in the constellation Leo Minor
has spiral arms found open and clear-defined. Moreover, it is also a Wolf-Rayet galaxy, with star-forming regions and forms a pair with NGC 3424, a nearby
NGC_3430
Large self-illuminated object in space
red supergiants due to high mass loss. These may instead evolve to a Wolf–Rayet star, characterised by spectra dominated by emission lines of elements heavier
Star
Lists of stars Luminous blue variable Supergiant Supernova impostor Wolf–Rayet star A very few low / no metallicity stars (populations II and III) between
List_of_most_massive_stars
Type of large cool star
their life as a type II supernova. The most massive stars can become Wolf–Rayet stars without becoming giants or supergiants at all. Although traditionally
Red_giant
Star in the constellation Scutum
WR 114 is a Wolf-Rayet star in the constellation of Scutum. It is an early type star of the carbon sequence (WCE) classified as WC5. WR 114 is listed
WR_114
Type of star that is luminous, blue, and variable in brightness
also clearly separated them from those other luminous blue stars, the Wolf–Rayet stars. Variable star types are usually named after the first member discovered
Luminous_blue_variable
Emission nebula in the constellation Canis Major
light years) away and 30 light-years in size. The central star is the Wolf-Rayet star WR7, an extremely hot star thought to be in a brief pre-supernova stage
NGC_2359
Star in the constellation Sagittarius
NGC 6822-WR 12 is a WN-type Wolf–Rayet star located in the galaxy NGC 6822, about 1.54 million light years away in the constellation of Sagittarius. NGC
NGC_6822-WR_12
Star in the constellation Scutum
WR 119 is a Wolf–Rayet star located about 10,500 light years away in the constellation Scutum. WR 119 is classified as a WC9 star, belonging to the late-type
WR_119
Wolf–Rayet star in the constellation Cassiopeia
WR 2 is a Wolf–Rayet star located around 8,000 light years away from Earth in the constellation of Cassiopeia, in the stellar association Cassiopeia OB1
WR_2
extremes List of stars with proplyds List of variable stars List of Wolf-Rayet stars List of luminous blue variable stars List of O-type stars List of
Lists_of_astronomical_objects
Constellation in the southern celestial hemisphere
Muscae is a triple star system, the brightest member of which is a Wolf–Rayet star. Musca was one of the 12 constellations established by the astronomer
Musca
Chemical element with atomic number 2 (He)
spectral line signature in sunlight during a solar eclipse in 1868 by Georges Rayet, Captain C. T. Haig, Norman R. Pogson, and Lieutenant John Herschel, and
Helium
Protoplanetary nebula
College Observatory included this star in his catalogue of all known Wolf-Rayet Stars as entry number 22, giving the object its commonly used name, which
Roberts_22
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