来自快速积聚的年轻恒星的X射线爆发照亮了麦克尼尔星云
J H Kastner1, M Richmond, N Grosso
1Rochester Institute of Technology, Rochester, New York 14623-5604, USA. jhk@cis.rit.edu
Nature
|July 23, 2004
概括
年轻的恒星表现出强大的X射线耀斑,可能会影响行星的形成. 积聚事件显著增加了X射线发射,可能会影响早期恒星系统的发展.
科学领域:
- * 天体物理学 * 天体物理学
- * 恒星进化过程中的恒星进化
- * 太阳系外行星研究
背景情况:
- * 年轻的低质量恒星是明亮的X射线源.
- *这些恒星的X射线耀斑可能会影响行星的形成.
- *X射线发射的起源 (冠状活动与积累) 是有争议的.
研究的目的:
- * 为了研究年轻恒星中的X射线发射的起源.
- * 为了确定质量积累是否影响X射线亮度.
- * 为了研究积聚爆发和X射线耀斑之间的关系.
主要方法:
- *X射线成像光谱学观察结果.
- * 在光学/红外爆发期间监测年轻恒星.
- *对X射线流量变化的分析.
主要成果:
- * 观察到来自年轻恒星的X射线流量增加了50倍.
- *X射线激增与一个壮观的光学/红外爆发相吻合.
- *这种爆发被归因于恒星上迅速增加的质量.
结论:
- *高积累率可能会导致年轻恒星的高能辐射强烈增强.
- * 增积增强的X射线发射可能是一个短暂的现象.
- * 强烈的恒星盘相互作用被物质涌入迅速灭.
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