Yerkes galaxy classification
E902179
Yerkes galaxy classification is a detailed system for categorizing galaxies based on their spectral and photometric properties, expanding on earlier morphological schemes to incorporate stellar population and luminosity characteristics.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Yerkes galaxy classification canonical | 2 |
| van den Bergh luminosity classification of galaxies | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11078402 — 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: Yerkes galaxy classification Context triple: [Hubble sequence of galaxy classification, inspired, Yerkes galaxy classification]
-
A.
Hubble sequence of galaxy classification
The Hubble sequence of galaxy classification is a morphological system that organizes galaxies into categories such as ellipticals, spirals, and irregulars based on their visual appearance.
-
B.
Hubble sequence
The Hubble sequence is a morphological classification scheme that organizes galaxies into categories such as ellipticals, spirals, and irregulars based on their visual appearance.
-
C.
Zwicky catalog of galaxies
The Zwicky catalog of galaxies is an influential astronomical catalog compiled by Swiss astronomer Fritz Zwicky that systematically lists and classifies thousands of galaxies and galaxy clusters.
-
D.
Principal Galaxies Catalogue
The Principal Galaxies Catalogue is a comprehensive astronomical catalog that compiles detailed data and standardized designations for thousands of known galaxies.
-
E.
Revised Shapley–Ames Catalog of Bright Galaxies
The Revised Shapley–Ames Catalog of Bright Galaxies is a major astronomical catalog that systematically lists and classifies the brightest galaxies in the sky, serving as a foundational reference for extragalactic research.
- 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: Yerkes galaxy classification Target entity description: Yerkes galaxy classification is a detailed system for categorizing galaxies based on their spectral and photometric properties, expanding on earlier morphological schemes to incorporate stellar population and luminosity characteristics.
-
A.
Hubble sequence of galaxy classification
The Hubble sequence of galaxy classification is a morphological system that organizes galaxies into categories such as ellipticals, spirals, and irregulars based on their visual appearance.
-
B.
Hubble sequence
The Hubble sequence is a morphological classification scheme that organizes galaxies into categories such as ellipticals, spirals, and irregulars based on their visual appearance.
-
C.
Zwicky catalog of galaxies
The Zwicky catalog of galaxies is an influential astronomical catalog compiled by Swiss astronomer Fritz Zwicky that systematically lists and classifies thousands of galaxies and galaxy clusters.
-
D.
Principal Galaxies Catalogue
The Principal Galaxies Catalogue is a comprehensive astronomical catalog that compiles detailed data and standardized designations for thousands of known galaxies.
-
E.
Revised Shapley–Ames Catalog of Bright Galaxies
The Revised Shapley–Ames Catalog of Bright Galaxies is a major astronomical catalog that systematically lists and classifies the brightest galaxies in the sky, serving as a foundational reference for extragalactic research.
- F. None of above. chosen
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical classification scheme
ⓘ
galaxy classification system ⓘ |
| aimsTo | provide more physical galaxy classification than purely morphological schemes ⓘ |
| basedOn |
galaxy luminosity characteristics
ⓘ
photometric properties of galaxies ⓘ spectral properties of galaxies ⓘ stellar population characteristics ⓘ |
| considers |
emission-line strengths
ⓘ
galaxy luminosity distribution ⓘ integrated light of galaxies ⓘ overall galaxy color ⓘ spectral absorption features ⓘ |
| developedAt | Yerkes Observatory ⓘ |
| distinguishes |
galaxies by photometric type
ⓘ
galaxies by spectral type ⓘ galaxies by stellar population mix ⓘ |
| expandsOn |
Hubble galaxy classification
ⓘ
linked to:
Hubble sequence of galaxy classification
morphological galaxy classification schemes ⓘ |
| field |
astrophysics
ⓘ
extragalactic astronomy ⓘ |
| focusesOn |
luminosity class of galaxies
ⓘ
population I and population II stars in galaxies ⓘ stellar content of galaxies ⓘ |
| relatedTo |
Hubble sequence
ⓘ
Morgan–Keenan stellar classification ⓘ
linked to:
Morgan–Keenan stellar classification system
|
| usedFor |
comparing stellar populations in different galaxies
ⓘ
linking galaxy morphology with stellar content ⓘ studying galaxy evolution ⓘ |
| usesCriterion |
bulge-to-disk light ratio
ⓘ
galaxy color indices ⓘ integrated galaxy spectrum ⓘ surface brightness distribution ⓘ |
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: Yerkes galaxy classification Description of subject: Yerkes galaxy classification is a detailed system for categorizing galaxies based on their spectral and photometric properties, expanding on earlier morphological schemes to incorporate stellar population and luminosity characteristics.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Yerkes galaxy classification