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NGC 5189 (Planetary Nebula)


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NGC 5189
Planetary Nebula (惑星状星雲)
Nb PN


別名 (Other names)
IC 4274, PK 307-3.1, Spiral Planetary Nebula, Gum 47, He2-94, Sa2-95

星座 (Constellation)
はえ座 (Mus) (Musca)


距離 (Distance)
3,000光年 (3,000 light-years)

NGC 5189 is a planetary nebula located 3,000 light years from the Earth in the constellation Musca.

NGC 5189 (Planetary Nebula) : Picture

NGC5189
NGC 5189: An Unusually Complex Planetary Nebula
(C) NASA, ESA, Hubble Heritage Team (STScI/AURA)
Why is this nebula so complex? When a star like our Sun is dying, it will cast off its outer layers, usually into a simple overall shape. Sometimes this shape is a sphere, sometimes a double lobe, and sometimes a ring or a helix. In the case of planetary nebula NGC 5189, however, no such simple structure has emerged. To help find out why, the Earth-orbiting Hubble Space Telescope recently observed NGC 5189 in great detail. Previous findings indicated the existence of multiple epochs of material outflow, including a recent one that created a bright but distorted torus running horizontally across image center. Results appear consistent with a hypothesis that the dying star is part of a binary star system with a precessing symmetry axis. Given this new data, though, research is sure to continue. NGC 5189 spans about three light years and lies about 3,000 light years away toward the southern constellation Musca.

NGC5189
NGC 5189
(C) NASA
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NGC 5189 (Planetary Nebula) : Movie

Hubblecast 61: A Tour of NGC 5189
In this episode of the Hubblecast, Dr Joe Liske (aka Dr J) invites us to tour NGC 5189, a planetary nebula in our galaxy. The nebula looks like a ribbon in space, with a complex structure that comes from the dying throes of a Sun-like star at its centre.
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