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- Owl_Nebula abstract "The Owl Nebula is a planetary nebula located approximately 2,030 light years away in the constellation Ursa Major. This object is known by the catalogue identifiers Messier Object 97 (M97) and NGC 3587. It was discovered by French astronomer Pierre Méchain on February 16, 1781. When William Parsons, 3rd Earl of Rosse observed the nebula in 1848, his hand-drawn illustration resembled an owl's head. It has been known as the owl nebula ever since.The nebula is approximately 8,000 years old. It is approximately circular in cross-section with a little visible internal structure. It was formed from the outflow of material from the stellar wind of the central star as it evolved along the asymptotic giant branch. The nebula is arranged in three concentric shells, with the outermost shell being about 20–30% larger than the inner shell. The owl-like appearance of the nebula is the result of an inner shell that is not circularly symmetric, but instead forms a barrel-like structure aligned at an angle of 45° to the line of sight.The nebula holds about 0.13 solar masses of matter, including hydrogen, helium, nitrogen, oxygen, and sulfur; all with a density of less than 100 particles per cubic centimeter. Its outer radius is around 0.91 ly (0.28 pc) and it is expanding with velocities in the range of 27–39 km/s into the surrounding interstellar medium.The 14th magnitude central star has since reached the turning point of its evolution where it condenses to form a white dwarf. It has 55–60% of the Sun's mass, 41–148 times the brightness of the Sun, and an effective temperature of 123,000 K. The star has been successfully resolved by the Spitzer Space Telescope as a point source that does not show the infrared excess characteristic of a circumstellar disk.".
- Owl_Nebula thumbnail M97.jpg?width=300.
- Owl_Nebula wikiPageExternalLink the-owl-nebula.html.
- Owl_Nebula wikiPageExternalLink owl_nebula.
- Owl_Nebula wikiPageExternalLink m097.html.
- Owl_Nebula wikiPageID "974931".
- Owl_Nebula wikiPageRevisionID "602353271".
- Owl_Nebula appmagV "+9.9".
- Owl_Nebula caption "Owl Nebula".
- Owl_Nebula constellation "Ursa Major".
- Owl_Nebula epoch "J2000.0".
- Owl_Nebula hasPhotoCollection Owl_Nebula.
- Owl_Nebula name "Messier 97".
- Owl_Nebula name "Owl Nebula".
- Owl_Nebula names "M97, NGC 3587, PN G148.4+57.0".
- Owl_Nebula notes "Owl-like "eyes" visible through larger telescopes".
- Owl_Nebula type "3".
- Owl_Nebula subject Category:Astronomical_objects_discovered_in_1781.
- Owl_Nebula subject Category:Messier_objects.
- Owl_Nebula subject Category:NGC_objects.
- Owl_Nebula subject Category:Objects_within_10_kly_of_Earth.
- Owl_Nebula subject Category:Orion–Cygnus_Arm.
- Owl_Nebula subject Category:Planetary_nebulae.
- Owl_Nebula subject Category:Ursa_Major_(constellation).
- Owl_Nebula type Cloud111439690.
- Owl_Nebula type MessierObjects.
- Owl_Nebula type NGCObjects.
- Owl_Nebula type NaturalPhenomenon111408559.
- Owl_Nebula type Nebula109366940.
- Owl_Nebula type Object100002684.
- Owl_Nebula type Phenomenon100034213.
- Owl_Nebula type PhysicalEntity100001930.
- Owl_Nebula type PhysicalPhenomenon111419404.
- Owl_Nebula type PlanetaryNebula109394797.
- Owl_Nebula type PlanetaryNebulae.
- Owl_Nebula type Process100029677.
- Owl_Nebula comment "The Owl Nebula is a planetary nebula located approximately 2,030 light years away in the constellation Ursa Major. This object is known by the catalogue identifiers Messier Object 97 (M97) and NGC 3587. It was discovered by French astronomer Pierre Méchain on February 16, 1781. When William Parsons, 3rd Earl of Rosse observed the nebula in 1848, his hand-drawn illustration resembled an owl's head. It has been known as the owl nebula ever since.The nebula is approximately 8,000 years old.".
- Owl_Nebula label "Eulennebel".
- Owl_Nebula label "M97 (nébuleuse planétaire)".
- Owl_Nebula label "Mgławica Sowa".
- Owl_Nebula label "Nebulosa Civetta".
- Owl_Nebula label "Nebulosa da Coruja".
- Owl_Nebula label "Nebulosa del Búho".
- Owl_Nebula label "Owl Nebula".
- Owl_Nebula label "Uilnevel".
- Owl_Nebula label "Туманность Сова".
- Owl_Nebula label "سديم البومة".
- Owl_Nebula label "ふくろう星雲".
- Owl_Nebula label "猫头鹰星云".
- Owl_Nebula sameAs Soví_mlhovina.
- Owl_Nebula sameAs Eulennebel.
- Owl_Nebula sameAs Μεσιέ_97.
- Owl_Nebula sameAs Nebulosa_del_Búho.
- Owl_Nebula sameAs Hontzaren_Nebulosa.
- Owl_Nebula sameAs M97_(nébuleuse_planétaire).
- Owl_Nebula sameAs Nebula_Burung_Hantu.
- Owl_Nebula sameAs Nebulosa_Civetta.
- Owl_Nebula sameAs ふくろう星雲.
- Owl_Nebula sameAs 올빼미_성운.
- Owl_Nebula sameAs Uilnevel.
- Owl_Nebula sameAs Mgławica_Sowa.
- Owl_Nebula sameAs Nebulosa_da_Coruja.
- Owl_Nebula sameAs m.03vvbp.
- Owl_Nebula sameAs Q14359.
- Owl_Nebula sameAs Q14359.
- Owl_Nebula sameAs Owl_Nebula.
- Owl_Nebula wasDerivedFrom Owl_Nebula?oldid=602353271.
- Owl_Nebula depiction M97.jpg.
- Owl_Nebula isPrimaryTopicOf Owl_Nebula.
