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NGC 3199 (Emission Nebula)


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NGC 3199
Emission Nebula (散光星雲)
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別名 (Other names)

ESO 127-EN14

星座 (Constellation)
りゅうこつ座 (Car) (Carina)

距離 (Distance)
12,000光年 (12,000 light-years)

NGC 3199 is an emission nebula located 12,000 light years from the Earth in the constellation Carina.

NGC 3199 (Emission Nebula) : Picture

Windblown NGC 3199
Windblown NGC 3199
(C) Ken Crawford (Rancho Del Sol Observatory), Macedon Ranges Observatory
NGC 3199 lies about 12,000 light-years away, a glowing cosmic cloud in the southern constellation of Carina. The nebula is about 75 light-years across in this haunting, false-color view. Though the deep image reveals a more or less complete ring shape, it does look very lopsided with a much brighter edge at the lower right. Near the center of the ring is a Wolf-Rayet star, a massive, hot, short-lived star that generates an intense stellar wind. In fact, Wolf-Rayet stars are known to create nebulae with interesting shapes as their powerful winds sweep up surrounding interstellar material. In this case, the bright edge was thought to indicate a bow shock produced as the star plowed through a uniform medium, like a boat through water. But measurements have shown the star is not really moving directly toward the bright edge. So a more likely explanation is that the material surrounding the star is not uniform, but clumped and denser near the bright edge of windblown NGC 3199.

NGC 3199
NGC 3199
(C) Ken Crawford, Macedon Ranges Observatory
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NGC 3199 (Emission Nebula) : Movie

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