Upper Scorpius
E514325
Upper Scorpius is a nearby, young stellar subgroup rich in massive, hot stars and active star formation, located within the larger Scorpius–Centaurus OB association.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
OB subgroup
ⓘ
star-forming region ⓘ stellar association subgroup ⓘ |
| contains |
massive OB stars that ionize surrounding gas
ⓘ
numerous X-ray active young stars ⓘ |
| hasAlternativeName |
USco
NERFINISHED
ⓘ
Upper Sco subgroup NERFINISHED ⓘ |
| hasApproximateAge |
5–11 million years
ⓘ
~10 million years ⓘ |
| hasDistanceFromSun |
~140 parsecs
ⓘ
~450 light-years ⓘ |
| hasEnvironment |
relatively low extinction compared to embedded regions
ⓘ
remnant of a past giant molecular cloud ⓘ |
| hasKinematicProperty |
co-moving stellar group
ⓘ
common space motion of member stars ⓘ |
| hasMemberCount |
hundreds of confirmed stellar members
ⓘ
many candidate members identified by Gaia ⓘ |
| hasProperty |
active star formation
ⓘ
nearby to the Sun ⓘ rich in hot stars ⓘ young stellar population ⓘ |
| hasRoleIn |
nearby star-formation history studies
ⓘ
studies of circumstellar disks ⓘ studies of early stellar evolution ⓘ studies of planet formation timescales ⓘ |
| hasSignificance |
benchmark region for testing pre-main-sequence models
ⓘ
important for understanding recent local star formation ⓘ key region for studying disk dispersal ⓘ |
| hasStellarPopulation |
Herbig Ae/Be stars
ⓘ
OB stars ⓘ T Tauri stars NERFINISHED ⓘ brown dwarfs ⓘ low-mass stars ⓘ massive stars ⓘ pre-main-sequence stars ⓘ |
| isAssociatedWith |
Lower Centaurus–Crux subgroup
NERFINISHED
ⓘ
Upper Centaurus–Lupus subgroup NERFINISHED ⓘ |
| isLocatedIn |
Milky Way
NERFINISHED
ⓘ
constellation Scorpius NERFINISHED ⓘ solar neighborhood ⓘ |
| isObservedIn |
X-ray wavelengths
ⓘ
infrared wavelengths ⓘ optical wavelengths ⓘ |
| isOneOf | three main Sco–Cen subgroups ⓘ |
| isSubgroupOf | Scorpius–Centaurus OB association NERFINISHED ⓘ |
| partOf |
Scorpius–Centaurus OB association
NERFINISHED
ⓘ
Sco–Cen OB association NERFINISHED ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.