Monoceros Stream
E547272
Monoceros Stream is a vast, ring-like stellar structure encircling the Milky Way, thought to be the remnant of a disrupted dwarf galaxy or outer disk feature.
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf | stellar stream ⓘ |
| alsoKnownAs |
Galactic Anticenter Stellar Structure
NERFINISHED
ⓘ
Monoceros Ring NERFINISHED ⓘ |
| associatedWith |
Galactic flare
ⓘ
Galactic warp NERFINISHED ⓘ |
| componentOf |
Milky Way stellar halo substructure
ⓘ
outer Milky Way disk region ⓘ |
| composedOf |
metal-poor stars
ⓘ
old stars ⓘ |
| discoveredBy |
Brian Yanny
NERFINISHED
ⓘ
Heidi Jo Newberg NERFINISHED ⓘ |
| discoveredIn | 2002 ⓘ |
| discoveredUsing | Sloan Digital Sky Survey NERFINISHED ⓘ |
| distanceFromGalacticCenter | approximately 15–20 kiloparsecs ⓘ |
| distanceFromSun | approximately 8–20 kiloparsecs ⓘ |
| encircles | Milky Way NERFINISHED ⓘ |
| extendsOver |
Galactic anticenter region
NERFINISHED
ⓘ
more than 100 degrees on the sky ⓘ |
| hasShape | ring-like ⓘ |
| hasUncertain | origin ⓘ |
| isEvidenceFor |
hierarchical galaxy formation
ⓘ
ongoing accretion onto the Milky Way ⓘ |
| kinematicsIndicate | coherent orbital motion ⓘ |
| liesNear | Galactic plane ⓘ |
| locatedIn | Milky Way halo NERFINISHED ⓘ |
| metallicity | lower than solar ⓘ |
| namedAfter | Monoceros constellation NERFINISHED ⓘ |
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ |
| orbits | Milky Way NERFINISHED ⓘ |
| originHypothesis |
accreted satellite galaxy
ⓘ
warped or flared outer Galactic disk ⓘ |
| overlaps | Canis Major overdensity NERFINISHED ⓘ |
| population | low-mass stars dominate ⓘ |
| significance | traces past merger or disk disturbance ⓘ |
| studiedWith |
2MASS survey
NERFINISHED
ⓘ
Gaia mission data ⓘ Sloan Digital Sky Survey NERFINISHED ⓘ |
| thoughtToBe |
outer disk perturbation
ⓘ
remnant of a disrupted dwarf galaxy ⓘ |
| tracedBy |
M giant stars
ⓘ
main-sequence turnoff stars ⓘ |
| usedToStudy |
Galactic disk–halo interface
NERFINISHED
ⓘ
Milky Way mass distribution ⓘ accretion history of the Milky Way ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.