Properties (53)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
stellar association
|
| gptkbp:age |
approximately 5 million years
|
| gptkbp:associatedWith |
gptkb:Cygnus_constellation
|
| gptkbp:contains |
massive stars
|
| gptkbp:hasMember |
young stellar objects
|
| gptkbp:hasRelatedPatent |
O and B stars
|
| https://www.w3.org/2000/01/rdf-schema#label |
Cygnus OB21 association
|
| gptkbp:includes |
gptkb:Cygnus_X-1
HD 226868 multiple O-type stars |
| gptkbp:isAccessibleBy |
yes
|
| gptkbp:isAssociatedWith |
supernova remnants
cosmic rays H II regions dark nebulae star clusters stellar nurseries |
| gptkbp:isHomeTo |
variable stars
binary star systems massive star clusters massive star formation regions young stellar clusters massive star systems |
| gptkbp:isKnownFor |
stellar winds
stellar interactions high-energy phenomena massive star formation events high-mass stars |
| gptkbp:isLocatedNear |
gptkb:North_America_Nebula
gptkb:Cygnus_X-3 |
| gptkbp:isPartOf |
star-forming regions
Galactic plane star formation history Cygnus region interstellar clouds Cygnus_constellation_structure Galactic_disk Galactic_structure |
| gptkbp:isRelatedTo |
interstellar medium
|
| gptkbp:isServedBy |
optical wavelengths
radio wavelengths infrared_wavelengths |
| gptkbp:isStudiedIn |
astrophysics
stellar dynamics stellar evolution star formation galactic evolution chemical enrichment stellar population analysis |
| gptkbp:length |
1,500 parsecs
approximately 4,500 light years |
| gptkbp:locatedIn |
Milky Way
|
| gptkbp:type |
gptkb:OB_association
|