Norma–Cygnus Arm
E117420
The Norma–Cygnus Arm is one of the major spiral arms of the Milky Way galaxy, located in its inner regions and rich in stars, gas, and star-forming regions.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Norma-Cygnus Arm | 1 |
| Norma–Cygnus Arm canonical | 1 |
| Norma–Cygnus Arm (in some models) | 1 |
| Norma–Outer Arm | 1 |
| Norma–Outer spiral arm | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T992682 — 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: Norma–Cygnus Arm Context triple: [Norma Arm, alsoKnownAs, Norma–Cygnus Arm]
-
A.
Sagittarius Arm
The Sagittarius Arm is one of the main spiral arms of the Milky Way galaxy, rich in star-forming regions and nebulae, located between the galactic center and the outer Perseus Arm.
-
B.
Scutum–Centaurus Arm
The Scutum–Centaurus Arm is one of the major spiral arms of the Milky Way galaxy, rich in stars, gas, and star-forming regions.
-
C.
Orion Arm
The Orion Arm is a minor spiral arm of the Milky Way galaxy that contains our Solar System and many of the stars visible in the night sky.
-
D.
Gould Belt
The Gould Belt is a nearby, partial ring of young stars, gas, and star-forming regions tilted to the Milky Way’s plane and encompassing many of the bright constellations visible from Earth.
-
E.
Scutum
Scutum is a small, faint constellation in the southern sky, known for its rich Milky Way star fields and deep-sky objects.
- 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: Norma–Cygnus Arm Target entity description: The Norma–Cygnus Arm is one of the major spiral arms of the Milky Way galaxy, located in its inner regions and rich in stars, gas, and star-forming regions.
-
A.
Sagittarius Arm
The Sagittarius Arm is one of the main spiral arms of the Milky Way galaxy, rich in star-forming regions and nebulae, located between the galactic center and the outer Perseus Arm.
-
B.
Scutum–Centaurus Arm
The Scutum–Centaurus Arm is one of the major spiral arms of the Milky Way galaxy, rich in stars, gas, and star-forming regions.
-
C.
Orion Arm
The Orion Arm is a minor spiral arm of the Milky Way galaxy that contains our Solar System and many of the stars visible in the night sky.
-
D.
Gould Belt
The Gould Belt is a nearby, partial ring of young stars, gas, and star-forming regions tilted to the Milky Way’s plane and encompassing many of the bright constellations visible from Earth.
-
E.
Scutum
Scutum is a small, faint constellation in the southern sky, known for its rich Milky Way star fields and deep-sky objects.
- F. None of above. chosen
Statements (37)
| Predicate | Object |
|---|---|
| instanceOf |
spiral arm
ⓘ
structure of the Milky Way ⓘ |
| alternativeName |
Norma Arm
ⓘ
Norma–Cygnus Arm ⓘ
surface form:
Norma–Outer Arm
Norma–Cygnus Arm ⓘ
surface form:
Norma–Outer spiral arm
|
| associatedWith |
Cygnus constellation direction
ⓘ
Norma constellation direction ⓘ |
| componentOf | spiral structure of the Milky Way ⓘ |
| contains |
H II regions
ⓘ
OB associations ⓘ interstellar gas ⓘ massive stars ⓘ molecular clouds ⓘ star-forming regions ⓘ stars ⓘ young star clusters ⓘ |
| galaxy | Milky Way ⓘ |
| hasProperty |
actively star-forming
ⓘ
gas-rich ⓘ major spiral arm ⓘ |
| locationInGalaxy | inner regions of the Milky Way ⓘ |
| observedIn |
infrared wavelengths
ⓘ
microwave wavelengths ⓘ radio wavelengths ⓘ |
| orientation | roughly follows the Galactic plane ⓘ |
| partOf | Milky Way ⓘ |
| relativePosition |
inner to the Sagittarius Arm
ⓘ
outer to the Scutum–Centaurus Arm ⓘ |
| relevance |
important for understanding Milky Way spiral structure
ⓘ
important site of massive star formation in the Milky Way ⓘ |
| richIn |
cold molecular gas
ⓘ
dust ⓘ star formation activity ⓘ |
| spiralPattern | logarithmic spiral ⓘ |
| studiedBy | Galactic astronomers ⓘ |
| tracedBy |
21-cm hydrogen line emission
ⓘ
CO molecular line emission ⓘ |
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: Norma–Cygnus Arm Description of subject: The Norma–Cygnus Arm is one of the major spiral arms of the Milky Way galaxy, located in its inner regions and rich in stars, gas, and star-forming regions.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Norma-Cygnus Arm
this entity surface form:
Norma–Cygnus Arm (in some models)
this entity surface form:
Norma–Outer Arm
this entity surface form:
Norma–Outer spiral arm