IC 1590
E476476
IC 1590 is a young open star cluster embedded within the emission nebula NGC 281 in the constellation Cassiopeia, notable for its role in illuminating and shaping the surrounding gas and dust.
All labels observed (2)
| Label | Occurrences |
|---|---|
| IC 1590 canonical | 2 |
| open cluster IC 1590 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4886116 — 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: IC 1590 Context triple: [NGC 281, hasEmbeddedStarCluster, IC 1590]
-
A.
IC 1613
IC 1613 is a dwarf irregular galaxy in the constellation Cetus and a member of the Local Group, notable for its low dust content and use in calibrating the cosmic distance scale.
-
B.
IC 4895
IC 4895 is a barred irregular dwarf galaxy in the Local Group, better known as NGC 6822 or Barnard's Galaxy, located in the constellation Sagittarius.
-
C.
IC 4756
IC 4756 is a large, bright open star cluster in the constellation Serpens, often observed as a rich field of moderately aged stars.
-
D.
IC 10
IC 10 is a nearby irregular starburst galaxy notable for its intense star formation and membership in the Local Group.
-
E.
IC 2574
IC 2574 is a dwarf irregular galaxy in the constellation Ursa Major, notable for its active star formation and membership in the nearby M81 Group of galaxies.
- 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: IC 1590 Target entity description: IC 1590 is a young open star cluster embedded within the emission nebula NGC 281 in the constellation Cassiopeia, notable for its role in illuminating and shaping the surrounding gas and dust.
-
A.
IC 1613
IC 1613 is a dwarf irregular galaxy in the constellation Cetus and a member of the Local Group, notable for its low dust content and use in calibrating the cosmic distance scale.
-
B.
IC 4895
IC 4895 is a barred irregular dwarf galaxy in the Local Group, better known as NGC 6822 or Barnard's Galaxy, located in the constellation Sagittarius.
-
C.
IC 4756
IC 4756 is a large, bright open star cluster in the constellation Serpens, often observed as a rich field of moderately aged stars.
-
D.
IC 10
IC 10 is a nearby irregular starburst galaxy notable for its intense star formation and membership in the Local Group.
-
E.
IC 2574
IC 2574 is a dwarf irregular galaxy in the constellation Ursa Major, notable for its active star formation and membership in the nearby M81 Group of galaxies.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
open star cluster
ⓘ
young star cluster ⓘ |
| age | a few million years ⓘ |
| ageClass | very young ⓘ |
| apparentPosition | near the center of NGC 281 ⓘ |
| associatedWith |
NGC 281
ⓘ
Pacman Nebula ⓘ |
| bestObservationSeason | autumn ⓘ |
| bestSeenFrom | Northern Hemisphere ⓘ |
| catalog | Index Catalogue ⓘ |
| contains |
ionizing stars of NGC 281
ⓘ
massive OB stars ⓘ |
| discoveredIn | early 20th century ⓘ |
| discoveryCatalogue |
Second Index Catalogue (IC II)
ⓘ
linked to:
IC II (second Index Catalogue)
|
| distanceFromEarth |
approximately 2.8 kiloparsecs
ⓘ
approximately 9000 light-years ⓘ |
| embeddedIn |
H II region NGC 281
ⓘ
emission nebula NGC 281 ⓘ
linked to:
NGC 281
|
| equatorialHemisphere | northern sky ⓘ |
| galacticLocation |
Perseus spiral arm
ⓘ
linked to:
Perseus Spiral Arm
|
| hasEnvironment |
dusty nebular region
ⓘ
molecular cloud associated with NGC 281 ⓘ |
| hasMemberType |
intermediate-mass stars
ⓘ
low-mass young stellar objects ⓘ massive O-type stars ⓘ pre-main-sequence stars ⓘ |
| hasMorphologicalEffect | creates pillars and globules in NGC 281 ⓘ |
| hasPhysicalProcess |
photoionization of surrounding nebula
ⓘ
radiation-driven gas evaporation ⓘ stellar feedback ⓘ triggered star formation ⓘ |
| hasResearchTopic |
X-ray emission from young stars
ⓘ
disk evolution in young stellar objects ⓘ initial mass function in young clusters ⓘ |
| isIonizingSourceOf |
NGC 281 H II region
ⓘ
linked to:
H II region NGC 281
|
| locatedIn |
Milky Way
ⓘ
NGC 281 ⓘ |
| locatedInConstellation | Cassiopeia ⓘ |
| observedIn |
X-ray wavelengths
ⓘ
infrared wavelengths ⓘ optical wavelengths ⓘ |
| partOf | NGC 281 star-forming complex ⓘ |
| role |
illuminates surrounding gas and dust in NGC 281
ⓘ
shapes surrounding gas and dust in NGC 281 ⓘ |
| studiedFor |
feedback from massive stars
ⓘ
star formation in clustered environments ⓘ triggered star formation at H II region edges ⓘ |
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: IC 1590 Description of subject: IC 1590 is a young open star cluster embedded within the emission nebula NGC 281 in the constellation Cassiopeia, notable for its role in illuminating and shaping the surrounding gas and dust.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
NGC 281 (Pacman Nebula)
subject linked to:
NGC 281 (Pacman Nebula)
linked to: IC 1590