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Pistol Nebula : ウィキペディア英語版 | Pistol Nebula
The Pistol Nebula〔Figer, D. F., Morris, M., Geballe, T. R., Rich, R. M., Serabyn, E., McLean, I. S., Puetter, R., & Yahil, A. 1999, High-Resolution Infrared Imaging and Spectroscopy of the Pistol Nebula: Evidence for Ejection, Astrophysical Journal, 525, 759〕 is located in the constellation Sagittarius. It surrounds one of the most luminous stars known, the Pistol Star.〔Figer, D. F., Najarro, F., Morris, M., McLean, I. S., Geballe , T. R., Ghez, A. M., & Langer, N. 1998, The Pistol Star, Astrophysical Journal, 506, 384〕 Both are located 25,000 light years away from Earth in the Quintuplet cluster, near the center of the Milky Way galaxy. The nebula contains approximately 9.3 solar masses worth of ionized gas that was ejected by the star several thousand years ago. The nebula was named in the 1980s for its shape as seen in low resolution images that were available at the time. The Pistol Star, a luminous blue variable is 1.6 million times brighter than the Sun making it one of the most luminous stars in the Milky Way. == References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Pistol Nebula」の詳細全文を読む
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