Faber–Jackson relation
E240982
The Faber–Jackson relation is an empirical correlation in astronomy that links the luminosity of an elliptical galaxy to the velocity dispersion of its stars, providing a key tool for estimating galactic distances and masses.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Faber–Jackson relation canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T2155098 — 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: Faber–Jackson relation Context triple: [Sandra Faber, knownFor, Faber–Jackson relation]
-
A.
Lemaître–Hubble law
The Lemaître–Hubble law is the fundamental cosmological relation that expresses the proportionality between a galaxy’s recessional velocity and its distance, providing the first observational evidence for the expansion of the universe.
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B.
Eddington limit
The Eddington limit is the maximum luminosity a star or accreting object can have before radiation pressure overcomes gravity and drives away its outer layers.
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C.
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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D.
Leo II Dwarf Galaxy
Leo II Dwarf Galaxy is a faint, spheroidal dwarf galaxy and satellite of the Milky Way located in the constellation Leo and belonging to the Local Group of galaxies.
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E.
Einasto
Einasto is an Estonian surname most notably associated with astrophysicist Jaan Einasto, a pioneer in the study of dark matter and large-scale structure of the universe.
- 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: Faber–Jackson relation Target entity description: The Faber–Jackson relation is an empirical correlation in astronomy that links the luminosity of an elliptical galaxy to the velocity dispersion of its stars, providing a key tool for estimating galactic distances and masses.
-
A.
Lemaître–Hubble law
The Lemaître–Hubble law is the fundamental cosmological relation that expresses the proportionality between a galaxy’s recessional velocity and its distance, providing the first observational evidence for the expansion of the universe.
-
B.
Eddington limit
The Eddington limit is the maximum luminosity a star or accreting object can have before radiation pressure overcomes gravity and drives away its outer layers.
-
C.
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.
-
D.
Leo II Dwarf Galaxy
Leo II Dwarf Galaxy is a faint, spheroidal dwarf galaxy and satellite of the Milky Way located in the constellation Leo and belonging to the Local Group of galaxies.
-
E.
Einasto
Einasto is an Estonian surname most notably associated with astrophysicist Jaan Einasto, a pioneer in the study of dark matter and large-scale structure of the universe.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
astronomy concept
ⓘ
empirical relation ⓘ scaling relation ⓘ |
| appliesTo |
bulges of disk galaxies
ⓘ
elliptical galaxies ⓘ |
| assumes |
dynamical equilibrium of stars in elliptical galaxies
ⓘ
virial theorem applicability ⓘ |
| category |
distance indicators in astronomy
ⓘ
galaxy scaling relations ⓘ |
| dependsOn |
galaxy environment
ⓘ
galaxy mass range ⓘ photometric band used for luminosity ⓘ |
| describes | correlation between luminosity and stellar velocity dispersion ⓘ |
| field |
astrophysics
ⓘ
extragalactic astronomy ⓘ observational cosmology ⓘ |
| hasDiscoveryYear | 1976 ⓘ |
| hasLimitation |
calibration depends on local galaxy samples
ⓘ
less precise distance indicator than fundamental plane ⓘ significant observational scatter ⓘ |
| hasMathematicalForm | L ∝ σ^γ ⓘ |
| hasScatter | intrinsic scatter in luminosity at fixed velocity dispersion ⓘ |
| implies | more luminous ellipticals have higher velocity dispersions ⓘ |
| involves |
galaxy luminosity function studies
ⓘ
stellar kinematics ⓘ |
| measurementRequires |
photometric measurement of total luminosity
ⓘ
spectroscopic determination of velocity dispersion ⓘ |
| namedAfter |
Robert E. Jackson
ⓘ
Sandra M. Faber ⓘ
linked to:
Sandra Faber
|
| originalSample | bright elliptical galaxies ⓘ |
| publishedIn |
Astrophysical Journal
ⓘ
linked to:
The Astrophysical Journal
|
| relatedTo |
Tully–Fisher relation
ⓘ
linked to:
Tully-Fisher relation distances
fundamental plane of elliptical galaxies ⓘ |
| relatesQuantity |
galaxy luminosity
ⓘ
stellar velocity dispersion ⓘ |
| scaleType | power-law relation ⓘ |
| typicalExponent | γ ≈ 4 ⓘ |
| usedFor |
constraining galaxy formation models
ⓘ
constructing distance ladders ⓘ estimating distances to elliptical galaxies ⓘ estimating galaxy masses ⓘ studying galaxy evolution ⓘ |
| usedIn |
determining peculiar velocities of galaxies
ⓘ
mapping large-scale structure ⓘ |
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: Faber–Jackson relation Description of subject: The Faber–Jackson relation is an empirical correlation in astronomy that links the luminosity of an elliptical galaxy to the velocity dispersion of its stars, providing a key tool for estimating galactic distances and masses.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.