Quasi-Stellar Objects
E900473
Quasi-Stellar Objects, commonly known as quasars, are extremely luminous and distant active galactic nuclei powered by supermassive black holes accreting matter at the centers of young galaxies.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Quasi-Stellar Objects canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11024709 — 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: Quasi-Stellar Objects Context triple: [Geoffrey Burbidge, publication, Quasi-Stellar Objects]
-
A.
Herbig–Haro objects
Herbig–Haro objects are small, bright patches of nebulosity formed when jets of gas from newborn stars collide with surrounding interstellar material.
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B.
Quasar
Quasar is a consumer electronics brand originally known for televisions and home appliances, historically associated with Matsushita Electric Industrial Co. (now Panasonic).
-
C.
Cepheid variables
Cepheid variables are pulsating stars whose regular brightness variations make them crucial standard candles for measuring cosmic distances and mapping galactic structure.
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D.
The Stars of High Luminosity
The Stars of High Luminosity is a seminal astrophysics monograph by Cecilia Payne-Gaposchkin that systematically analyzes and classifies very bright stars, helping to shape modern stellar astrophysics.
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E.
Wolf–Rayet stars
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.
- 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: Quasi-Stellar Objects Target entity description: Quasi-Stellar Objects, commonly known as quasars, are extremely luminous and distant active galactic nuclei powered by supermassive black holes accreting matter at the centers of young galaxies.
-
A.
Herbig–Haro objects
Herbig–Haro objects are small, bright patches of nebulosity formed when jets of gas from newborn stars collide with surrounding interstellar material.
-
B.
Quasar
Quasar is a consumer electronics brand originally known for televisions and home appliances, historically associated with Matsushita Electric Industrial Co. (now Panasonic).
-
C.
Cepheid variables
Cepheid variables are pulsating stars whose regular brightness variations make them crucial standard candles for measuring cosmic distances and mapping galactic structure.
-
D.
The Stars of High Luminosity
The Stars of High Luminosity is a seminal astrophysics monograph by Cecilia Payne-Gaposchkin that systematically analyzes and classifies very bright stars, helping to shape modern stellar astrophysics.
-
E.
Wolf–Rayet stars
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.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
active galactic nucleus
ⓘ
astronomical object ⓘ extragalactic object ⓘ |
| affects |
evolution of host galaxy
ⓘ
intergalactic medium through ionization ⓘ |
| alsoKnownAs |
QSO
NERFINISHED
ⓘ
quasar ⓘ |
| classification |
X-ray selected quasar
ⓘ
optically selected quasar ⓘ radio-loud quasar ⓘ radio-quiet quasar ⓘ |
| cosmologicalUse |
probe of the early universe
ⓘ
standardizable candle for cosmology (with caveats) ⓘ tracer of large-scale structure ⓘ |
| discoveredBy | Maarten Schmidt NERFINISHED ⓘ |
| drives |
powerful relativistic jets (in many cases)
ⓘ
strong outflows and winds ⓘ |
| emits |
X-rays
ⓘ
electromagnetic radiation across the spectrum ⓘ gamma rays ⓘ optical light ⓘ radio waves ⓘ ultraviolet radiation ⓘ |
| environment | center of an active galaxy ⓘ |
| firstSpectroscopicIdentificationYear | 1963 GENERATED ⓘ |
| hasProperty |
compact appearance
ⓘ
extremely luminous ⓘ high redshift ⓘ strong emission lines ⓘ variability in brightness ⓘ very distant ⓘ |
| locatedIn | center of a galaxy ⓘ |
| luminosityRange | up to 1000 times the luminosity of a large galaxy ⓘ |
| observedWith |
X-ray observatories
ⓘ
optical telescopes ⓘ radio telescopes ⓘ |
| originallyClassifiedAs | radio source with star-like optical counterpart GENERATED ⓘ |
| poweredBy |
accretion of matter onto a supermassive black hole
ⓘ
supermassive black hole ⓘ |
| redshiftRange | up to about 7.5 and higher ⓘ |
| spectralFeature |
broad emission lines
ⓘ
continuum dominated by accretion disk emission ⓘ narrow emission lines ⓘ |
| timeVariability | variability on timescales from days to years ⓘ |
| typicalBlackHoleMass |
billions of solar masses
GENERATED
ⓘ
millions of solar masses GENERATED ⓘ |
| typicalHost | young galaxy ⓘ |
| usedToStudy |
cosmic reionization
ⓘ
growth of supermassive black holes ⓘ intervening absorption systems ⓘ |
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: Quasi-Stellar Objects Description of subject: Quasi-Stellar Objects, commonly known as quasars, are extremely luminous and distant active galactic nuclei powered by supermassive black holes accreting matter at the centers of young galaxies.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.