Pismis 24-1(即HDE 319718),是弥漫星云NGC 6357中的疏散星团Pismis 24的一部分,距离地球8,150光年,是Pismis 24中质量最大、亮度最高的恒星,也是目前已知光度最亮的恒星之一。
在最近哈勃太空望远镜对Pismis 24-1的观测发现,它至少是一个三联星系统,包括Pismis 24-1SW和一对双星Pismis 24-1NE。Pismis 24-1SW的光谱类型已经确定,它是一颗非常明亮的蓝超巨星,将可能演化为高光度蓝变星。Pismis 24-1NE的光谱型还没确定。上述恒星和位于其附近的Pismis 24-17在诞生时质量都接近100个太阳质量,但并没有超过爱丁顿极限。
参考文献
- Massey, Philip; DeGioia-Eastwood, Kathleen; Waterhouse, Elizabeth. The Progenitor Masses of Wolf-Rayet Stars and Luminous Blue Variables Determined from Cluster Turnoffs. II. Results from 12 Galactic Clusters and OB Associations. The Astronomical Journal. 2001, 121 (2): 1050. Bibcode:2001AJ....121.1050M. arXiv:astro-ph/0010654 . doi:10.1086/318769.
- http://jumk.de/astronomie/big-stars/hde-319718.shtml(页面存档备份,存于互联网档案馆)
- http://www.tim-thompson.com/hde319718.html(页面存档备份,存于互联网档案馆)
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