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Protoplanetary nebula IRAS 13208-6020 is formed from material that is shed by a central star. The name protoplanetary nebula is an unfortunate choice due to the possibility of confusion with the same term being sometimes employed when discussing the unrelated concept of protoplanetary disks.
This is a list of protoplanetary nebulae. These objects represent the final stage before a planetary nebula. During this stage, the red giant star begins to slowly expel its outermost layers of material. A protoplanetary nebula usually glows by reflecting the light from its parent star.
IRAS 19024+0044, also known informally as the Starfish Nebula [1], is a large protoplanetary nebula that is located in the constellation Aquila at a distance of approximately 11,000 light-years from the Milky Way. [2] [3] The central star of the nebula is approaching the final stage of its
The Calabash Nebula, also known as the Rotten Egg Nebula or by its technical name OH 231.84 +4.22, is a protoplanetary nebula (PPN) 1.4 light years (13 Pm) long and located some 5,000 light years (47 Em) from Earth in the constellation Puppis.
Westbrook Nebula (CRL 618) is a bipolar protoplanetary nebula which is located in the constellation Auriga. It is being formed by a star that has passed through the red giant phase and has ceased nuclear fusion at its core. This star is concealed at the center of the nebula, and is ejecting gas and dust at velocities of up to 200 km/s. [3]
M1-92 (Minkowski 92), also known as Minkowski’s Footprint or the Footprint Nebula, is a bipolar protoplanetary nebula in the constellation of Cygnus.It is a type of reflection nebula, visible only by light reflected from the central star.
The Boomerang Nebula is a protoplanetary nebula [2] located 5,000 light-years from Earth in the constellation Centaurus. It is also known as the Bow Tie Nebula and catalogued as LEDA 3074547. [ 3 ] The nebula's temperature is measured at 1 K (−272.15 °C ; −457.87 °F ) making it the coolest natural place currently known in the Universe .
Minkowski 4-18 (M 4-18) is a planetary nebula or protoplanetary nebula [6] in the deep northern constellation of Camelopardalis. Distance estimates range widely across publications between 1–7 kpc, [7] though a 2022 paper gives a distance of 5,230 parsecs (17,100 light-years). [2] The nebula appears to be very young, [8] at about 3,100 years ...