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- Fleming_1 abstract "Fleming 1 is an unusual planetary nebula situated in the Centaurus constellation. It has a pair of symmetrical jets spanning more than 2.8 pc and delineated with a number of knots. The jets and knots are moving away from the center of the nebula and were probably ejected 10,000 to 16,000 year ago. The innermost part of the nebula has a butterfly shape and is immersed into a faint halo. The butterfly's wings point in the direction of jets with their axis titled by 50° to the line of sight. The waist of the "butterfly" is surrounded by a torus of expanding hot gas forming the inner bright ellipse. Fleming 1 is probably 5,000 years old.Like any other planetary nebula Fleming 1 was formed when an old asymptotic giant branch (AGB) star lost its outer hydrogen rich envelop leaving behind a hot core (young white dwarf)—the central star of the nebula. The star in the center of Fleming 1 has a temperature of 80,000 ± 15,000 K and mass of 0.56+0.3−0.04 M☉.The observations performed by European Southern Observatory showed that the central star is in fact a double degenerate (made of two white dwarfs) binary with a period of 1.1953 ± 0.0002 days. The companion is probably an older white dwarf of a higher mass—0.64 to 0.7 M☉. Its temperature is about 120,000 K providing the bulk of high energy photons needed to ionize the Fleming 1. The jets likely formed as a result of accretion of the material from the AGB star onto this white dwarf. The accretion led to the formation of a precessing accretion disk, which was expelling material along its rotational axis leading to the formation of jets and knots. The past accretion events also explain the high temperature of the second white dwarf.".
- Fleming_1 wikiPageID "37747865".
- Fleming_1 wikiPageLength "3842".
- Fleming_1 wikiPageOutDegree "15".
- Fleming_1 wikiPageRevisionID "678487171".
- Fleming_1 wikiPageWikiLink Accretion_disc.
- Fleming_1 wikiPageWikiLink Accretion_disk.
- Fleming_1 wikiPageWikiLink Asymptotic_giant_branch.
- Fleming_1 wikiPageWikiLink Bipolar_outflow.
- Fleming_1 wikiPageWikiLink Category:Centaurus_(constellation).
- Fleming_1 wikiPageWikiLink Category:Planetary_nebulae.
- Fleming_1 wikiPageWikiLink Centaurus.
- Fleming_1 wikiPageWikiLink Centaurus_constellation.
- Fleming_1 wikiPageWikiLink ESO.
- Fleming_1 wikiPageWikiLink Epoch_(astronomy).
- Fleming_1 wikiPageWikiLink European_Southern_Observatory.
- Fleming_1 wikiPageWikiLink J2000.
- Fleming_1 wikiPageWikiLink Parsec.
- Fleming_1 wikiPageWikiLink Planetary_nebula.
- Fleming_1 wikiPageWikiLink UV_radiation.
- Fleming_1 wikiPageWikiLink Ultraviolet.
- Fleming_1 wikiPageWikiLink White_dwarf.
- Fleming_1 wikiPageWikiLink File:The_planetary_nebula_Fleming_1_seen_with_ESO’s_Very_Large_Telescope.tiff.
- Fleming_1 wikiPageWikiLinkText "Fleming 1".
- Fleming_1 absmagV "13.1".
- Fleming_1 appmagV "+7.6".
- Fleming_1 caption "Fleming 1 as seen by ESO".
- Fleming_1 constellation Centaurus.
- Fleming_1 credit "ESO/H. Boffin".
- Fleming_1 distLy "2400".
- Fleming_1 epoch Epoch_(astronomy).
- Fleming_1 epoch J2000.
- Fleming_1 hasPhotoCollection Fleming_1.
- Fleming_1 name "Fleming 1".
- Fleming_1 names "G290.5+07.9, ESO 170-6".
- Fleming_1 notes "A peculiar PN with a binary in the center".
- Fleming_1 radiusLy "1.4".
- Fleming_1 sizeV "1.3".
- Fleming_1 wikiPageUsesTemplate Template:Planetary_nebula.
- Fleming_1 wikiPageUsesTemplate Template:Reflist.
- Fleming_1 wikiPageUsesTemplate Template:Solar_mass.
- Fleming_1 wikiPageUsesTemplate Template:±.
- Fleming_1 subject Category:Centaurus_(constellation).
- Fleming_1 subject Category:Planetary_nebulae.
- Fleming_1 hypernym Nebula.
- Fleming_1 type Star.
- Fleming_1 comment "Fleming 1 is an unusual planetary nebula situated in the Centaurus constellation. It has a pair of symmetrical jets spanning more than 2.8 pc and delineated with a number of knots. The jets and knots are moving away from the center of the nebula and were probably ejected 10,000 to 16,000 year ago. The innermost part of the nebula has a butterfly shape and is immersed into a faint halo. The butterfly's wings point in the direction of jets with their axis titled by 50° to the line of sight.".
- Fleming_1 label "Fleming 1".
- Fleming_1 sameAs Fleming_1.
- Fleming_1 sameAs Fleming_1.
- Fleming_1 sameAs m.0ngtkm_.
- Fleming_1 sameAs Q5097631.
- Fleming_1 sameAs Q5097631.
- Fleming_1 wasDerivedFrom Fleming_1?oldid=678487171.
- Fleming_1 isPrimaryTopicOf Fleming_1.