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IC 4603 (Reflection Nebula)


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IC 4603
Reflection Nebula (反射星雲)
Nb RN


別名 (Other names)
LBN 1109, ESO 517-N2

星座 (Constellation)
へびつかい座 (Oph) (Ophiuchus)

距離 (Distance)
420光年 (420 light-years)

IC 4603 is a reflection nebula located 420 light years from the Earth in the constellation Ophiuchus.

IC 4603 (Reflection Nebula) : Picture

IC 4603 (Reflection Nebula)
IC 4603 (Reflection Nebula)
(C) Takayuki Yoshida
Why does this starfield photograph resemble an impressionistic painting? The effect is created not by digital trickery but by large amounts of interstellar dust. Dust, minute globs rich in carbon and similar in size to cigarette smoke, frequently starts in the outer atmospheres of large, cool, young stars. The dust is dispersed as the star dies and grows as things stick to it in the interstellar medium. Dense dust clouds are opaque to visible light and can completely hide background stars. For less dense clouds, the capacity of dust to preferentially reflect blue starlight becomes important, effectively blooming the stars blue light out and marking the surrounding dust. Nebular gas emissions, typically brightest in red light, can combine to form areas seemingly created on an artist's canvas. Photographed above is roughly four square degrees of the nebula IC 4603 near the bright star Antares toward the constellation of Ophiuchus.

IC 4603 (Reflection Nebula)
IC 4603 (Reflection Nebula)
(C) Rolf Olsen

IC 4603 (Reflection Nebula)
IC 4603 (Reflection Nebula)
(C) Gary Stevens

IC 4603 IC 4603
IC 4603 (Reflection Nebula)
(C) Takayuki Yoshida
IC 4603 (Reflection Nebula)
(C) Gary Stevens
IC 4603
IC 4603 (Reflection Nebula)
(C) Rolf Olsen
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