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gptkbp:instanceOf
|
Astronomical object
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gptkbp:age
|
10-13 billion years
|
|
gptkbp:cataloguedIn
|
gptkb:NGC_catalogue
gptkb:William_Herschel
gptkb:Charles_Messier
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gptkbp:composedOf
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gptkb:Stars
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gptkbp:contains
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gptkb:Population_II_stars
Low metallicity stars
Old stars
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gptkbp:coreDensity
|
Very high
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gptkbp:discoveredBy
|
gptkb:Abraham_Ihle
1665
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gptkbp:distanceFromEarth
|
Several thousand to hundreds of thousands of light-years
|
|
gptkbp:distinctFrom
|
Open clusters
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gptkbp:distribution
|
Spherically distributed around galactic centers
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gptkbp:doNotContain
|
Significant amounts of gas and dust
Young stars
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gptkbp:doNotShow
|
Significant star formation
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gptkbp:example
|
gptkb:Messier_13
gptkb:Messier_22
gptkb:Omega_Centauri
gptkb:Messier_15
gptkb:47_Tucanae
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gptkbp:formationEpoch
|
gptkb:Early_universe
|
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gptkbp:foundIn
|
gptkb:Galaxies
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Globular clusters
|
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gptkbp:locatedIn
|
gptkb:Galactic_bulge
gptkb:Galactic_halo
|
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gptkbp:luminosity
|
Can be visible to naked eye
Up to a million times the Sun
|
|
gptkbp:mass
|
10^4 to 10^6 solar masses
|
|
gptkbp:mayInclude
|
gptkb:X-ray_binaries
Pulsars
Blue straggler stars
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gptkbp:numberInMilkyWay
|
About 150-180
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|
gptkbp:observedBy
|
Telescopes
|
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gptkbp:orbitType
|
Galactic center
|
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gptkbp:rating
|
Tens of thousands to millions
|
|
gptkbp:shape
|
Spherical
|
|
gptkbp:stellarPopulation
|
Homogeneous
Multiple populations (in some clusters)
|
|
gptkbp:studiedIn
|
Cosmology
Stellar evolution
Galactic formation
|
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gptkbp:subjectOf
|
Astrophysical research
|
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gptkbp:usedFor
|
Measuring age of the universe
Studying stellar dynamics
Tracing galactic history
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gptkbp:bfsParent
|
gptkb:Subdwarf
gptkb:Galaxies
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gptkbp:bfsLayer
|
6
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