Wolf–Rayet stars
E290082
Wolf–Rayet stars are extremely hot, massive, and luminous evolved stars characterized by powerful stellar winds and strong emission lines from heavy elements in their spectra.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Wolf–Rayet stars canonical | 4 |
| Wolf–Rayet WN | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2706379 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Wolf–Rayet stars Context triple: [Carina Nebula, contains, Wolf–Rayet stars]
-
A.
Cepheid
Cepheid is a molecular diagnostics company known for its rapid, automated PCR-based testing systems used in clinical and research settings.
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B.
Baade’s star
Baade’s star is a luminous, variable star in the Andromeda Galaxy notable for its role in Walter Baade’s work refining the cosmic distance scale.
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C.
SN 1987A
SN 1987A is a famous supernova, the closest observed in modern times, whose 1987 explosion in the Large Magellanic Cloud has provided key insights into stellar death and supernova physics.
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D.
Novae
Novae was a major Roman military and urban center along the Danube frontier in the province of Moesia.
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E.
Structure and Evolution of the Stars
Structure and Evolution of the Stars is a classic astrophysics textbook by Martin Schwarzschild that systematically develops the theory of stellar interiors and their life cycles.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Wolf–Rayet stars Target entity description: Wolf–Rayet stars are extremely hot, massive, and luminous evolved stars characterized by powerful stellar winds and strong emission lines from heavy elements in their spectra.
-
A.
Cepheid
Cepheid is a molecular diagnostics company known for its rapid, automated PCR-based testing systems used in clinical and research settings.
-
B.
Baade’s star
Baade’s star is a luminous, variable star in the Andromeda Galaxy notable for its role in Walter Baade’s work refining the cosmic distance scale.
-
C.
SN 1987A
SN 1987A is a famous supernova, the closest observed in modern times, whose 1987 explosion in the Large Magellanic Cloud has provided key insights into stellar death and supernova physics.
-
D.
Novae
Novae was a major Roman military and urban center along the Danube frontier in the province of Moesia.
-
E.
Structure and Evolution of the Stars
Structure and Evolution of the Stars is a classic astrophysics textbook by Martin Schwarzschild that systematically develops the theory of stellar interiors and their life cycles.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
evolved star
ⓘ
massive star ⓘ stellar object ⓘ |
| canBeProgenitorOf |
Type Ib supernova
ⓘ
Type Ic supernova ⓘ long gamma-ray burst ⓘ |
| canProduce | strong X-ray emission in binaries ⓘ |
| discoveredAt | Paris Observatory ⓘ |
| discoveredIn | 1867 ⓘ |
| evolutionaryStage |
core helium-burning phase
ⓘ
post-main-sequence ⓘ |
| hasMassLossRate | 10^-5 to 10^-4 solar masses per year ⓘ |
| hasPopulation | Population I star ⓘ |
| hasStellarWind | powerful stellar wind ⓘ |
| hasSubtype |
WC star
ⓘ
WN star ⓘ WO star ⓘ |
| hasTerminalWindVelocity | 1000 to 5000 km/s ⓘ |
| location |
Large Magellanic Cloud
ⓘ
Milky Way galaxy ⓘ
linked to:
Milky Way
Small Magellanic Cloud ⓘ |
| metallicityDependence | more common at high metallicity ⓘ |
| namedAfter |
Charles Wolf
ⓘ
Georges Rayet ⓘ |
| occursIn |
spiral arms of galaxies
ⓘ
star-forming regions ⓘ starburst galaxies ⓘ |
| oftenInBinarySystemWith |
O-type star
ⓘ
massive companion star ⓘ |
| progenitorType | O-type star ⓘ |
| roleInGalaxies |
source of chemical enrichment
ⓘ
source of ionizing radiation ⓘ source of mechanical feedback ⓘ |
| spectralCharacteristic |
broad emission lines
ⓘ
lines of carbon ⓘ lines of helium ⓘ lines of nitrogen ⓘ lines of oxygen ⓘ strong emission lines ⓘ |
| spectralClassSystem | WN WC WO classification ⓘ |
| surfaceComposition |
enriched in heavy elements
ⓘ
helium-rich ⓘ hydrogen-poor ⓘ |
| typicalEffectiveTemperature | 30000 to 200000 K ⓘ |
| typicalLuminosity | 10^5 to 10^6 times solar luminosity ⓘ |
| typicalMass | greater than 20 solar masses ⓘ |
| variability | often photometrically variable ⓘ |
| WC star | carbon-sequence Wolf–Rayet star ⓘ |
| WN star | nitrogen-sequence Wolf–Rayet star ⓘ |
| WO star | oxygen-sequence Wolf–Rayet star ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Wolf–Rayet stars Description of subject: Wolf–Rayet stars are extremely hot, massive, and luminous evolved stars characterized by powerful stellar winds and strong emission lines from heavy elements in their spectra.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Wolf–Rayet stars