|
Cl * 1806-20 is a heavily obscured star cluster on the far side of the Milky Way Galaxy, approximately 50,000 light years distant. It contains the Soft Gamma-Ray Repeater SGR 1806-20 and the luminous blue variable hypergiant star LBV 1806-20, a candidate for the most luminous star in the Galaxy. LBV 1806-20 and many of the other massive stars in the cluster are believed likely to end as supernovas in a few million years, leaving only neutron stars or black holes as remnants. The cluster is heavily obscured by intervening dust, and mostly visible in the infrared. It is part of the larger W31 H II region and giant molecular cloud. It has a compact core (diam ~0.2 pc) with a more extended halo (diam ~2 pc) containing the LBV,〔SIMBAD/Aladin plot, of r=30 asec region around SGR B18054117-20251165〕 and also contains at least three Wolf-Rayet stars (of types WC8, WN6, and WN7) and an OB supergiant, plus other young massive stars.〔(D. F. Figer et al. Astrophys.J. 622 (2005) L49-L52 ) 〕 == See also == * Wolf-Rayet star * LBV 1806-20 * SGR 1806-20 * Hypergiant * Star cluster * Luminous Blue Variable 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「Cl* 1806-20」の詳細全文を読む スポンサード リンク
|