Hourglass region
E514345
The Hourglass region is a bright, compact star-forming nebular core within the Lagoon Nebula (Messier 8), notable for its intense radiation, young massive stars, and striking hourglass-shaped appearance.
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
nebular core ⓘ star-forming region ⓘ |
| contains |
dust lanes
ⓘ
embedded star cluster ⓘ ionized gas ⓘ young massive stars ⓘ |
| distanceApprox | about 4,000–5,000 light-years from Earth ⓘ |
| emits |
infrared radiation
ⓘ
optical emission lines ⓘ strong H-alpha emission ⓘ |
| hasAlternateDescription | bright core of the Lagoon Nebula ⓘ |
| hasAppearance |
bright
ⓘ
compact ⓘ |
| hasColor |
predominantly red in optical images
ⓘ
shows blue and green components from different emission lines ⓘ |
| hasEnvironment |
dense molecular gas
ⓘ
intense ultraviolet radiation ⓘ strong stellar winds ⓘ |
| hasProperty |
high surface brightness
ⓘ
intense radiation field ⓘ |
| hasRoleIn | triggered star formation in surrounding gas ⓘ |
| hasShape | hourglass-shaped ⓘ |
| hasSignificance |
example of compact H II region
ⓘ
laboratory for massive star formation studies ⓘ |
| hasStructure |
bright ionization fronts
ⓘ
dark obscuring clouds ⓘ nebular filaments ⓘ |
| hostGalaxy | Milky Way NERFINISHED ⓘ |
| illuminatedBy |
massive O-type stars
ⓘ
young stellar objects ⓘ |
| isImagedBy |
Hubble Space Telescope
NERFINISHED
ⓘ
ground-based observatories ⓘ |
| isNearbyTo | central regions of Lagoon Nebula ⓘ |
| isRegionOf | active star formation ⓘ |
| isStudiedIn |
nebular dynamics research
ⓘ
star formation research ⓘ |
| isSubstructureOf | H II region in Lagoon Nebula ⓘ |
| locatedIn | Sagittarius constellation NERFINISHED ⓘ |
| namedAfter | its hourglass-like morphology ⓘ |
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| partOf |
Lagoon Nebula
NERFINISHED
ⓘ
Messier 8 NERFINISHED ⓘ |
| physicalProcess |
ongoing gravitational collapse of dense clumps
ⓘ
photoionization by massive stars ⓘ stellar wind–driven shaping of gas ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.