Statements (58)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:Nebula_Award
|
| gptkbp:are_named_for |
Planetary appearance in early telescopes
|
| gptkbp:are_often_used_to_determine |
Distances in astronomy
|
| gptkbp:are_part_of |
Stellar evolution
|
| gptkbp:are_typically_located_in |
The galactic plane
|
| gptkbp:can |
Complex structures
|
| gptkbp:can_be_found_in |
gptkb:Starburst_galaxies
Various wavelengths Different galaxies |
| gptkbp:can_contain |
Dust grains
|
| gptkbp:contains |
Ionized gas
|
| gptkbp:eject |
Outer layers of stars
|
| gptkbp:exhibits |
Symmetry
Variability Color variations Emission lines |
| gptkbp:form |
Evolved stars
|
| https://www.w3.org/2000/01/rdf-schema#label |
Planetary Nebulae
|
| gptkbp:is_a |
gptkb:astronomy
|
| gptkbp:is_analyzed_in |
Chemical composition
Stellar winds Their ionization structure Their morphology |
| gptkbp:is_characterized_by |
Shell of gas
|
| gptkbp:is_essential_for |
Astrobiology
Cosmic chemical evolution Chemical enrichment of the interstellar medium Understanding stellar lifecycles Understanding the fate of stars. |
| gptkbp:is_found_in |
Star-forming regions
|
| gptkbp:is_observed_in |
Radio telescopes
Infrared wavelengths Visible light |
| gptkbp:is_often_associated_with |
Star clusters
Supernova remnants Bipolar outflows |
| gptkbp:is_often_compared_to |
Spherical
|
| gptkbp:is_often_seen_in |
gptkb:The_Milky_Way
Galaxies |
| gptkbp:is_often_used_in |
Astronomical research
|
| gptkbp:is_recognized_by |
Their spectral lines
|
| gptkbp:is_related_to |
White dwarfs
Planetary nebula hypothesis |
| gptkbp:is_studied_for |
Stellar nucleosynthesis
Their expansion rates |
| gptkbp:is_studied_in |
gptkb:spectroscopy
gptkb:astronomy Astrophysical simulations Mass loss in stars |
| gptkbp:is_surrounded_by |
A central star
|
| gptkbp:is_visible_from |
Hubble Space Telescope images
|
| gptkbp:key |
Understanding galaxy evolution
|
| gptkbp:last_for |
A few thousand years
|
| gptkbp:scientific_classification |
gptkb:geometric_shapes
Type I or Type II |
| gptkbp:bfsParent |
gptkb:Hubble_Space_Telescope
gptkb:astronomy |
| gptkbp:bfsLayer |
4
|