论文标题
超新星残余G350.1-0.3的扩展和年龄
Expansion and Age of the Supernova Remnant G350.1-0.3: High-Velocity Iron Ejecta from a Core-Collapse Event
论文作者
论文摘要
我们报告了Chandra高度不对称的核心折叠超新星残留G350.1-0.3的观察结果。我们记录了距离大致固定的中央紧凑型物体9年以上的扩展，其天平面速度高达$ 5000 d_ {4.5} $ km s $ s $^{ - 1} $（$ d_ {4.5} $是单位的距离为4.5 kpc），从900 km s $ s $^$^$^$^$^$^{$^;三维空间速度接近6000 km s $^{ - 1} $。大多数明亮的发射来自较重的弹出，铁在铁中特别强。在4000-6000 km s $^{ - 1} $上看到铁增强的弹射器，强烈暗示超新星不是常见的IIP事件。虽然某些轻率的区域大致具有太阳丰度，但我们无法确定清晰的爆炸波特征。我们的膨胀适当运动表明，G350.1-0.3的历史不超过600年，独立于距离：银河系中已知的第三年级已知核心偏曲超新星，也是最不对称的。
We report Chandra observations of the highly asymmetric core-collapse supernova remnant G350.1-0.3. We document expansion over 9 years away from the roughly stationary central compact object, with sky-plane velocities up to $5000 d_{4.5}$ km s$^{-1}$ ($d_{4.5}$ is the distance in units of 4.5 kpc), redshifts ranging from 900 km s$^{-1}$ to 2600 km s$^{-1}$, and three-dimensional space velocities approaching 6000 km s$^{-1}$. Most of the bright emission comes from heavy-element ejecta particularly strong in iron. Iron-enhanced ejecta are seen at 4000 - 6000 km s$^{-1}$, strongly suggesting that the supernova was not a common Type IIP event. While some fainter regions have roughly solar abundances, we cannot identify clear blast-wave features. Our expansion proper motions indicate that G350.1-0.3 is no more than about 600 years old, independent of distance: the third youngest known core-collapse supernova in the Galaxy, and one of the most asymmetric.
