Statements (112)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:Supernova
|
| gptkbp:associated_elements |
produced heavy elements like gold and silver
|
| gptkbp:associated_with |
the collapse of a massive star
the formation of neutron stars the death of a blue supergiant star the production of cosmic dust |
| gptkbp:barrel_type |
February 23, 1987
|
| gptkbp:bomb_load |
about 10^51 ergs
|
| gptkbp:brightness_peak |
magnitude 18.5
|
| gptkbp:brightness_peak_magnitude |
-18.5
|
| gptkbp:chemical_elements_produced |
heavy elements like iron and nickel
|
| gptkbp:collaboration |
involved international teams of astronomers
involved many international scientists |
| gptkbp:discovered_by |
gptkb:1987
gptkb:Ian_Shelton |
| gptkbp:distance_from_earth |
approximately 168,000 light-years
|
| gptkbp:ejecta_composition |
hydrogen, helium, and heavier elements
|
| gptkbp:emissions_standard |
monitored over decades
observed in the remnant monitored by various radio telescopes |
| gptkbp:emitted_neutrinos |
on the day of the explosion
detected by the Kamiokande II and IMB detectors |
| gptkbp:expansion_plans |
approximately 5,000 km/s
about 5,000 km/s |
| gptkbp:first_appearance |
February 24, 1987
|
| gptkbp:followed_by |
observed in multiple wavelengths
|
| gptkbp:has_luminosity |
provides insights into massive star life cycles
|
| gptkbp:has_spectral_type |
Type II-P
hydrogen-rich spectrum |
| gptkbp:has_supernova |
SN 1987 A is the designation
|
| gptkbp:historical_legacy |
remains a key subject in astrophysics research.
|
| gptkbp:hosts |
gptkb:LMC_(Large_Magellanic_Cloud)
gptkb:NGC_1987 |
| https://www.w3.org/2000/01/rdf-schema#label |
Supernova 1987 A
|
| gptkbp:hubble_space_telescope_observation |
captured images of the remnant
|
| gptkbp:impact |
enhanced understanding of stellar evolution
helped refine distance measurements in the universe led to new theories on supernova mechanisms contributed to distance measurements in the universe |
| gptkbp:influence_on_cosmology |
contributed to understanding of cosmic distances
|
| gptkbp:influenced |
the study of cosmic rays
the study of supernova mechanics the understanding of core-collapse supernovae |
| gptkbp:initial_magnitude |
around -18.5
|
| gptkbp:is_a_source_of |
by the Kamiokande II detector
first direct detection of neutrinos from a supernova |
| gptkbp:is_observed_in |
gptkb:Chandra_X-ray_Observatory
gptkb:Hubble_Space_Telescope gptkb:Supernova_Discovery_Team infrared wavelengths multiple wavelengths various ground-based telescopes ultraviolet wavelengths multiple ground-based telescopes |
| gptkbp:legacy |
remains a key event in modern astronomy.
remains a key event in astronomy |
| gptkbp:light_echoes |
used to study the surrounding environment
|
| gptkbp:lighting |
asymmetric light curve
exhibited a plateau phase used to estimate distance and energy monitored for several years observed in subsequent years detected by various observatories plateau phase followed by a decline provides insights into explosion mechanisms detected in the remnant peculiar light curve detected by Chandra X-ray Observatory detected in 1990s double-peaked light curve |
| gptkbp:located_in |
gptkb:Large_Magellanic_Cloud
|
| gptkbp:mass |
approximately 20 solar masses
|
| gptkbp:mass_of_progenitor_star |
between 15 and 25 solar masses
|
| gptkbp:model |
tested against observations of the remnant
|
| gptkbp:neutrino_burst |
detected on February 23, 1987
first detected from a supernova |
| gptkbp:neutrino_detection_date |
February 23, 1987
|
| gptkbp:next_event |
expected to continue for many years
|
| gptkbp:notable_feature |
ring structure around the remnant
|
| gptkbp:observational_impact |
provided insights into supernova mechanisms
provided insights into stellar evolution important for supernova research |
| gptkbp:optical_emission |
observed in the remnant
|
| gptkbp:photometric_observations |
conducted for decades
|
| gptkbp:preserved_by |
gptkb:Supernova_remnant_1987_A
hydrogen, helium, and heavier elements over 30 years old as of 2023 approximately 1.5 light-years across complex and asymmetric over 30 years as of 2020 complex structure with knots and filaments over 30 years as of 2023 |
| gptkbp:publications |
numerous papers published
numerous papers published about it |
| gptkbp:remnant_dynamics |
complex interactions with surrounding medium
|
| gptkbp:remnant_evolution |
continuing to evolve over time
|
| gptkbp:remnant_observation |
ongoing with advanced telescopes
|
| gptkbp:remnant_temperature |
increasing over time
|
| gptkbp:research |
utilized photometry and spectroscopy
extensively studied since its discovery extensively monitored since discovery ongoing research on supernova nucleosynthesis used to study supernova mechanisms |
| gptkbp:significance |
first naked-eye supernova since 1604
important for understanding stellar death important for studying core-collapse supernovae pivotal in understanding supernova mechanisms |
| gptkbp:supernova_remnants |
important for studying cosmic dust formation
|
| gptkbp:travel_time |
light took 168,000 years to reach Earth
|
| gptkbp:type |
gptkb:Type_II_supernova
|
| gptkbp:bfsParent |
gptkb:Hubble_Space_Telescope
|
| gptkbp:bfsLayer |
4
|