Pleiades reflection nebulae
E590202
The Pleiades reflection nebulae are faint, blue-tinged clouds of interstellar dust that visibly reflect the light of the young, hot stars in the Pleiades star cluster.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Pleiades reflection nebulae canonical | 2 |
| Pleiades reflection nebula | 1 |
| Pleiades reflection nebula region | 1 |
| Pleiades reflection nebulosity | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6395810 — 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: Pleiades reflection nebulae Context triple: [23 Tauri, associatedWith, Pleiades reflection nebulae]
-
A.
NGC 2023 reflection nebula
NGC 2023 is a bright reflection nebula in the constellation Orion, illuminated by a young B-type star and noted for its complex dust structures and role in studies of star formation.
-
B.
Pelican Nebula
The Pelican Nebula is a bright emission nebula in the constellation Cygnus, notable for its bird-like shape and active star-forming regions.
-
C.
reflection nebula NGC 6726
Reflection nebula NGC 6726 is a bright, blue-tinged cloud of dust and gas illuminated by nearby young stars in the Corona Australis star-forming region.
-
D.
Heart Nebula
The Heart Nebula is a vast emission nebula in the constellation Cassiopeia, known for its heart-like shape and active star-forming regions.
-
E.
Rosette Nebula
The Rosette Nebula is a large, circular emission nebula and active star-forming region located in the Milky Way, notable for its striking rose-like appearance in astrophotography.
- 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: Pleiades reflection nebulae Target entity description: The Pleiades reflection nebulae are faint, blue-tinged clouds of interstellar dust that visibly reflect the light of the young, hot stars in the Pleiades star cluster.
-
A.
NGC 2023 reflection nebula
NGC 2023 is a bright reflection nebula in the constellation Orion, illuminated by a young B-type star and noted for its complex dust structures and role in studies of star formation.
-
B.
Pelican Nebula
The Pelican Nebula is a bright emission nebula in the constellation Cygnus, notable for its bird-like shape and active star-forming regions.
-
C.
reflection nebula NGC 6726
Reflection nebula NGC 6726 is a bright, blue-tinged cloud of dust and gas illuminated by nearby young stars in the Corona Australis star-forming region.
-
D.
Heart Nebula
The Heart Nebula is a vast emission nebula in the constellation Cassiopeia, known for its heart-like shape and active star-forming regions.
-
E.
Rosette Nebula
The Rosette Nebula is a large, circular emission nebula and active star-forming region located in the Milky Way, notable for its striking rose-like appearance in astrophotography.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
interstellar dust clouds
ⓘ
reflection nebulae ⓘ |
| ageRelation | younger than the Pleiades stars themselves is unlikely; dust is likely unrelated foreground or background material ⓘ |
| angularExtent | several degrees on the sky around the Pleiades ⓘ |
| associatedWith |
Pleiades star cluster
ⓘ
linked to:
Pleiades
|
| belongsTo | local spiral arm of the Milky Way ⓘ |
| bestSeenFrom | dark-sky sites ⓘ |
| bestSeenWith | long-exposure astrophotography ⓘ |
| catalogDesignation |
IC 349
ⓘ
NGC 1432 ⓘ NGC 1435 ⓘ |
| composedOf |
gas
ⓘ
interstellar dust ⓘ |
| discoveredBy | early telescopic observers in the 19th century ⓘ |
| distanceFromEarth |
about 135 parsecs
ⓘ
about 440 light-years ⓘ |
| hasAlternativeName |
Merope Nebula (for the brightest part)
ⓘ
linked to:
Merope Nebula
Pleiades nebulosity ⓘ
linked to:
Pleiades
|
| hasColor | blue ⓘ |
| hasProperty |
blue-tinged
ⓘ
faint ⓘ non-emission ⓘ optically visible ⓘ |
| illuminatedBy | young hot stars of the Pleiades ⓘ |
| inSameRegionAs | Pleiades open cluster ⓘ |
| locatedIn |
Pleiades star cluster
ⓘ
linked to:
Pleiades
constellation Taurus ⓘ |
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ |
| partOf | Milky Way ⓘ |
| redshift | approximately zero (Galactic object) ⓘ |
| scatteringType | preferential scattering of blue light ⓘ |
| scatters | starlight ⓘ |
| studiedFor |
interstellar dust properties
ⓘ
light scattering in the interstellar medium ⓘ |
| surroundsStar |
Alcyone
ⓘ
Celaeno ⓘ Electra ⓘ Maia ⓘ Merope ⓘ Sterope ⓘ Taygeta ⓘ |
| thoughtToBe | intervening dust cloud illuminated by Pleiades ⓘ |
| visibleBecauseOf | starlight reflection ⓘ |
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: Pleiades reflection nebulae Description of subject: The Pleiades reflection nebulae are faint, blue-tinged clouds of interstellar dust that visibly reflect the light of the young, hot stars in the Pleiades star cluster.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Pleiades reflection nebulae
subject linked to:
Flamsteed designation 21 Tauri
linked to: Pleiades reflection nebulae
linked to: Pleiades reflection nebulae