论文标题
最年轻的行星星云的下降和下降
The Decline and Fall of the Youngest Planetary Nebula
论文作者
论文摘要
Stingray星云（又名HEN3-1357）在1990年首次出现，当时明亮的螺旋线和以前没有观察到的明亮的无线电发射是出乎意料的（Parthasarathy etal。1993）。在随后的几年中，星云逐渐消失。我们报告了基于哈勃太空望远镜在1996年和2016年获得的良好校准图像，其形状变化和大幅下降的变化。Hen3-1357现在是“重组星云”。
The Stingray Nebula, aka Hen3-1357, appeared for the first time in 1990 when bright nebular lines and radio emission that had not been observed before were unexpectedly discovered (Parthasarathy et al. 1993). In the ensuing years the nebula faded precipitously. We report changes in shape and large decreases in its nebular emission-line fluxes based on well-calibrated images obtained by the Hubble Space Telescope in 1996 and 2016. Hen3-1357 is now a "recombination nebula".
