Vela OB2 association
E467980
Vela OB2 association is a nearby, young stellar grouping in the constellation Vela, rich in massive, hot stars and active star formation.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Vela OB2 association canonical | 3 |
| Vela OB2 | 1 |
| VelaOB2Association | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4617523 — 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: Vela OB2 association Context triple: [Gould Belt, contains, Vela OB2 association]
-
A.
Perseus OB2 association
Perseus OB2 association is a nearby group of young, massive OB-type stars located in the Perseus constellation region of the Milky Way.
-
B.
Monoceros OB2 association
Monoceros OB2 association is a large stellar grouping in the constellation Monoceros, notable for its young, massive stars and active star-forming regions such as the Rosette Nebula.
-
C.
Orion OB association
The Orion OB association is a nearby stellar grouping dominated by young, massive O- and B-type stars in the Orion constellation, serving as a key region for studying recent star formation in our galactic neighborhood.
-
D.
Scorpius–Centaurus OB association
The Scorpius–Centaurus OB association is the nearest large group of young, massive stars to the Sun, spanning the constellations Scorpius and Centaurus and playing a key role in studies of recent star formation in our Galactic neighborhood.
-
E.
Jewel Box cluster
The Jewel Box cluster is a bright and colorful open star cluster in the constellation Crux, renowned for its striking mix of blue and red stars visible even in small telescopes.
- 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: Vela OB2 association Target entity description: Vela OB2 association is a nearby, young stellar grouping in the constellation Vela, rich in massive, hot stars and active star formation.
-
A.
Perseus OB2 association
Perseus OB2 association is a nearby group of young, massive OB-type stars located in the Perseus constellation region of the Milky Way.
-
B.
Monoceros OB2 association
Monoceros OB2 association is a large stellar grouping in the constellation Monoceros, notable for its young, massive stars and active star-forming regions such as the Rosette Nebula.
-
C.
Orion OB association
The Orion OB association is a nearby stellar grouping dominated by young, massive O- and B-type stars in the Orion constellation, serving as a key region for studying recent star formation in our galactic neighborhood.
-
D.
Scorpius–Centaurus OB association
The Scorpius–Centaurus OB association is the nearest large group of young, massive stars to the Sun, spanning the constellations Scorpius and Centaurus and playing a key role in studies of recent star formation in our Galactic neighborhood.
-
E.
Jewel Box cluster
The Jewel Box cluster is a bright and colorful open star cluster in the constellation Crux, renowned for its striking mix of blue and red stars visible even in small telescopes.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
OB association
ⓘ
stellar association ⓘ young stellar grouping ⓘ |
| associatedWith |
Gum Nebula
ⓘ
Vela supernova remnant ⓘ
linked to:
VelaSupernovaRemnant
interstellar bubbles ⓘ |
| contains |
B-type stars
ⓘ
O-type stars ⓘ OB-type stars ⓘ hot stars ⓘ low-mass young stars ⓘ massive stars ⓘ pre-main-sequence stars ⓘ |
| discoveredBy | Bertil Lindblad ⓘ |
| hasAlternativeName |
Vela OB2
ⓘ
linked to:
Vela OB2 association
|
| hasAngularExtent | tens of degrees on the sky ⓘ |
| hasApproximateAge |
10 million years
ⓘ
10–20 million years ⓘ |
| hasCoordinateSystem | equatorial coordinates ⓘ |
| hasDistanceFromEarth |
about 1100 light-years
ⓘ
about 350 parsecs ⓘ |
| hasDominantSpectralTypes | O and B ⓘ |
| hasFormationMechanism | collapse of a giant molecular cloud ⓘ |
| hasGalacticEnvironment | star-forming region ⓘ |
| hasGalacticLatitude | low galactic latitude ⓘ |
| hasMetallicity | approximately solar metallicity ⓘ |
| hasProperty |
actively forming stars
ⓘ
nearby ⓘ rich in hot stars ⓘ rich in massive stars ⓘ young ⓘ |
| hasRegionType | loose stellar aggregate ⓘ |
| hasResearchInterest |
cluster formation and dispersal
ⓘ
feedback from massive stars ⓘ massive star formation ⓘ stellar kinematics ⓘ |
| hasStellarPopulation |
early-type stars
ⓘ
intermediate-mass stars ⓘ low-mass stars ⓘ |
| hasSubstructure |
multiple kinematic groups
ⓘ
spatially extended population ⓘ |
| isMemberOf | local spiral arm ⓘ |
| locatedIn | Milky Way ⓘ |
| locatedInConstellation | Vela ⓘ |
| partOf | Gould Belt ⓘ |
| studiedBy |
Gaia mission
ⓘ
linked to:
Gaia observatory
|
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: Vela OB2 association Description of subject: Vela OB2 association is a nearby, young stellar grouping in the constellation Vela, rich in massive, hot stars and active star formation.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Vela constellation
linked to: Vela OB2 association
linked to: Vela OB2 association