gingadan.com

NGC 6210 (Turtle Nebula)


Home > Nebula > NGC6210
Down
Movie

NGC 6210
Turtle Nebula (カメ星雲)
Planetary Nebula (惑星状星雲)
Nb PN


別名 (Other names)
PK 43+37.1

明るさ (Brightness)
8.8等級

星座 (Constellation)
ヘルクレス座 (Her) (Hercules)


距離 (Distance)
6,500光年 (6,500 light-years)

Turtle Nebula (NGC 6210) is a planetary nebula located 6,500 light years from the Earth in the constellation Hercules.

NGC 6210 (Planetary Nebula) : Picture

NGC 6210 (Planetary Nebula)
NGC 6210 (Planetary Nebula)
(C) NASA/ESA
The NASA/ESA Hubble Space Telescope has taken a striking high resolution image of the curious planetary nebula NGC 6210. Located about 6,500 light-years away, in the constellation Hercules, NGC 6210 was discovered in 1825 by the German astronomer Friedrich Georg Wilhelm Struve. Although in a small telescope it appears only as a tiny disc, it is fairly bright.

NGC 6210 is the last gasp of a star slightly less massive than our Sun at the final stage of its life cycle. The multiple shells of material ejected by the dying star form a superposition of structures with different degrees of symmetry, giving NGC 6210 its odd shape. This sharp image shows the inner region of this planetary nebula in unprecedented detail, where the central star is surrounded by a thin, bluish bubble that reveals a delicate filamentary structure. This bubble is superposed onto an asymmetric, reddish gas formation where holes, filaments and pillars are clearly visible.

The life of a star ends when the fuel available to its thermonuclear engine runs out. The estimated lifetime for a Sun-like star is some ten billion years. When the star is about to expire, it becomes unstable and ejects its outer layers, forming a planetary nebula and leaving behind a tiny, but very hot, remnant, known as white dwarf. This compact object, here visible at the centre of the image, cools down and fades very slowly. Stellar evolution theory predicts that our Sun will experience the same fate as NGC 6210 in about five billion years.

This picture was created from images taken with Hubble’s Wide Field Planetary Camera 2 through three filters: the broadband filter F555W (yellow) and the narrowband filters F656N (ionised hydrogen), F658N (ionised nitrogen) and F502N (ionised oxygen). The exposure times were 80 s, 140 s, 800 s and 700 s respectively and the field of view is only about 28 arcseconds across.

NGC6210 NGC6210
NGC 6210
(C) NASA
NGC 6210
(C) NASA

NGC6210
NGC 6210
(C) NASA
A Turtle in Space? Planetary nebula NGC 6210 may look like a giant space turtle, but it is actually much more massive and violent. Fortunately, this gas cloud in Hercules lies about 6,500 light years away. NGC 6210 was investigated with the Hubble Space Telescope because it showed evidence of unusual relative abundances of nebular gas. The resulting detailed representative-color picture, above, shows jets of hot gas streaming through holes in an older, cooler shell of gas. The central star that created the planetary nebula is clearly visible in the center of the inset image. Analyses of data involving this recently released picture may help explain the origin of chemical abundances in this nebula and our Galaxy.
Up
Up

NGC 6210 (Planetary Nebula) : Movie

Up
Home > Nebula > NGC6210
Up

gingadan.com ブログパーツ