Statements (112)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:nebula
|
| gptkbp:bfsLayer |
3
|
| gptkbp:bfsParent |
gptkb:Hubble_Space_Telescope
|
| gptkbp:aftermath |
complex interactions with surrounding medium
|
| gptkbp:apparent_magnitude |
around -18.5
magnitude 18.5 -18.5 |
| 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 produced heavy elements like gold and silver |
| gptkbp:bomb_load |
about 10^51 ergs
|
| gptkbp:collaborations |
involved international teams of astronomers
involved many international scientists |
| gptkbp:conservation_efforts |
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:constellation |
SN 1987 A is the designation
important for studying cosmic dust formation |
| gptkbp:date |
February 23, 1987
|
| gptkbp:discovered_by |
gptkb:1987
gptkb:Ian_Shelton |
| gptkbp:distance |
approximately 168,000 light-years
|
| gptkbp:emissions_standard |
monitored over decades
observed in the remnant monitored by various radio telescopes |
| gptkbp:excretion |
hydrogen, helium, and heavier elements
|
| 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 |
detected on February 23, 1987
first detected from a supernova provides insights into massive star life cycles |
| gptkbp:has_spectral_type |
Type II-P
hydrogen-rich spectrum |
| gptkbp:hosts |
gptkb:LMC_(Large_Magellanic_Cloud)
gptkb:NGC_1987 |
| https://www.w3.org/2000/01/rdf-schema#label |
Supernova 1987 A
|
| gptkbp:impact |
provided insights into supernova mechanisms
provided insights into stellar evolution 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 important for supernova research |
| gptkbp:influenced |
the study of cosmic rays
the study of supernova mechanics the understanding of core-collapse supernovae |
| gptkbp:is_a_source_of |
by the Kamiokande II detector
first direct detection of neutrinos from a supernova |
| gptkbp:is_influenced_by |
contributed to understanding of cosmic distances
|
| 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 captured images of the remnant ongoing with advanced telescopes multiple ground-based telescopes |
| gptkbp:isotopes |
on the day of the explosion
detected by the Kamiokande II and IMB detectors |
| gptkbp:legacy |
remains a key subject in astrophysics research.
remains a key event in modern astronomy. remains a key event in astronomy |
| gptkbp:length |
February 23, 1987
|
| 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 observed 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
between 15 and 25 solar masses |
| gptkbp:next_event |
expected to continue for many years
|
| gptkbp:notable_feature |
ring structure around the remnant
|
| gptkbp:photography |
conducted for decades
|
| gptkbp:produced_by |
heavy elements like iron and nickel
|
| gptkbp:publishes |
numerous papers published
numerous papers published about it |
| gptkbp:related_model |
tested against observations of the remnant
|
| 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:serving_temperature |
increasing over time
|
| 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:sound |
used to study the surrounding environment
|
| gptkbp:species |
continuing to evolve over time
|
| gptkbp:travel_time |
light took 168,000 years to reach Earth
|
| gptkbp:type |
gptkb:Type_II_supernova
|