Outer Galactic Arm
E480822
The Outer Galactic Arm is one of the Milky Way’s major spiral arms, located in its far outer regions and containing stars, gas, and dust orbiting the galactic center.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
spiral arm
ⓘ
structure in the Milky Way ⓘ |
| belongsTo | Galactic disk NERFINISHED ⓘ |
| contains |
H II regions
ⓘ
molecular clouds ⓘ open star clusters ⓘ star-forming regions ⓘ young massive stars ⓘ |
| hasAlternativeName |
Norma–Cygnus Arm
NERFINISHED
ⓘ
Outer Arm NERFINISHED ⓘ |
| hasComponent |
interstellar dust
ⓘ
interstellar gas ⓘ stars ⓘ |
| hasDistanceFromSun | on the order of several kiloparsecs ⓘ |
| hasEnvironment | low-density outer Galactic disk ⓘ |
| hasGalactocentricRadius |
greater than 10 kiloparsecs
ⓘ
on the order of 13–15 kiloparsecs ⓘ |
| hasMorphologicalType | logarithmic spiral segment ⓘ |
| hasObservationChallenge |
intervening interstellar dust
ⓘ
large distance from the Sun ⓘ line-of-sight confusion with other spiral features ⓘ |
| hasProperty | rich in neutral hydrogen gas ⓘ |
| hasRole | outer boundary feature of Milky Way spiral structure ⓘ |
| hasStarFormationRate | lower than inner spiral arms ⓘ |
| hasUncertain |
detailed star formation history
ⓘ
exact extent ⓘ precise pitch angle ⓘ |
| influences |
distribution of gas in outer Milky Way
ⓘ
kinematics of outer disk stars ⓘ |
| isBeyond | Perseus Arm NERFINISHED ⓘ |
| isConnectedTo | overall spiral pattern of the Milky Way ⓘ |
| isDistinguishedFrom |
Perseus Arm
NERFINISHED
ⓘ
Sagittarius Arm NERFINISHED ⓘ Scutum–Centaurus Arm NERFINISHED ⓘ |
| isLocatedRelativeToSun | outside the Sun’s orbit around the Galactic Center ⓘ |
| isMajorSpiralArmOf | Milky Way NERFINISHED ⓘ |
| isMoreDistantThan | Perseus Arm NERFINISHED ⓘ |
| isSpiralPatternFeatureOf | Milky Way disk NERFINISHED ⓘ |
| isSubjectOf |
Galactic structure studies
ⓘ
radio astronomy surveys ⓘ spiral arm mapping ⓘ |
| isTracedBy |
21 cm hydrogen line emission
ⓘ
infrared observations ⓘ radio observations ⓘ |
| locatedIn | outer region of the Milky Way disk ⓘ |
| orbits | Galactic Center NERFINISHED ⓘ |
| partOf | Milky Way NERFINISHED ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.