Statements (55)
Predicate | Object |
---|---|
gptkbp:instance_of |
gptkb:open_cluster
|
gptkbp:age |
up to a few billion years
|
gptkbp:characteristic |
younger than globular clusters
|
gptkbp:cluster_formation_theory |
theories explain how clusters form and evolve
|
gptkbp:composed_by |
metal-rich stars
|
gptkbp:composed_of |
generally higher metallicity than Population I stars
|
gptkbp:contains_star |
clusters can experience tidal interactions with the galaxy
|
gptkbp:dissolved |
clusters can disperse over time
|
gptkbp:distribution |
found in the Milky Way and other galaxies
|
gptkbp:dynamics |
looser gravitational binding than globular clusters
|
gptkbp:example |
gptkb:Hyades
gptkb:Pleiades |
gptkbp:formed |
formed from the same molecular cloud
|
gptkbp:galactic_context |
part of the broader study of galactic dynamics
|
gptkbp:galactic_halo |
not typically found in the galactic halo
|
gptkbp:has_luminosity |
age can be estimated through isochrone fitting
stars evolve together in clusters stars can interact gravitationally within the cluster |
gptkbp:historical_significance |
first identified in the 18th century
|
https://www.w3.org/2000/01/rdf-schema#label |
open cluster population II
|
gptkbp:importance |
studying stellar evolution
understanding galactic structure |
gptkbp:is_a_tool_for |
Hubble Space Telescope used for observations
ground-based telescopes used for observations |
gptkbp:is_compared_to |
compared to globular clusters in terms of age and composition
|
gptkbp:lifespan |
can last several hundred million years
|
gptkbp:location |
galaxy disk
|
gptkbp:model |
models help predict cluster evolution
|
gptkbp:notable_city |
gptkb:NGC_188
gptkb:NGC_752 gptkb:M67 gptkb:NGC_2244 gptkb:NGC_6819 |
gptkbp:observational_astronomy |
key area of research in observational astronomy
|
gptkbp:relation_to |
associated with star formation regions
|
gptkbp:research |
gptkb:spectroscopy
photometry difficult to observe due to distance and brightness |
gptkbp:research_importance |
help in calibrating distance scales
provide insights into the chemical evolution of galaxies |
gptkbp:size |
typically contain a few dozen to a few thousand stars
|
gptkbp:stellar_birth |
formed from the same molecular cloud as other stars
|
gptkbp:stellar_evolution_tracks |
used to study the life cycles of stars in clusters
|
gptkbp:stellar_formation_history |
provide clues to the history of star formation in the galaxy
|
gptkbp:stellar_mass_range |
includes a range of stellar masses
|
gptkbp:stellar_motion |
stars have similar velocities within the cluster
|
gptkbp:stellar_population_classification |
part of the classification of star clusters
|
gptkbp:stellar_population_dynamics |
dynamics influenced by nearby stars
|
gptkbp:stellar_population_studies |
important for understanding the Milky Way's history
|
gptkbp:stellar_population_synthesis |
used to model the light from clusters.
|
gptkbp:stellar_remnants |
can contain white dwarfs and neutron stars
|
gptkbp:stellar_types |
includes O, B, A, F, G, K stars
|
gptkbp:type |
gptkb:star
|
gptkbp:bfsParent |
gptkb:NGC_2158
|
gptkbp:bfsLayer |
5
|