论文标题
两个与V4362 Sagittarii和Do aquilae相关的新Nova壳
Two New Nova Shells associated with V4362 Sagittarii and DO Aquilae
论文作者
论文摘要
经典的Nova是在积聚二进制系统中的白矮人表面上的喷发。从白色矮人表面弹出的材料通常形成轴对称壳。 Nova壳的塑形机制是在行星星云和超新星残留物之间的能量尺度上发生的过程的探针。我们报告了围绕Nova后系统V4362 Sagittarii（1994）的发现的发现，以及对Do Aquilae（1925）的观察结果。 V4362 SGR的距离测量值为0.5p/m1.4 kpc，DO AQL的距离测量值为6.7 p/m 3.5 kpc -0.2。对于DO AQL的增长率为0.07``/年，而V4362 SGR的增长率为0.32`/年。提出了对与V4362 SGR相关的NOVA壳的电离结构的初步研究。观察到的Nova壳的电离结构在很大程度上取决于它们的形态和中心成分向观察者的方向。需要X射线，IR和UV观测以及光学积分单元光谱，以更好地理解这些有趣的对象。
A classical nova is an eruption on the surface of a white dwarf in an accreting binary system. The material ejected from the white dwarf surface generally forms an axisymmetric shell. The shaping mechanisms of nova shells are probes of the processes that take place at energy scales between planetary nebulae and supernova remnants. We report on the discovery of nova shells surrounding the post-nova systems V4362 Sagittarii (1994) and more limited observations of DO Aquilae (1925). Distance measurements of 0.5p/m1.4 kpc for V4362 Sgr and 6.7 p/m 3.5 kpc -0.2 for DO Aql are found based on the expansion parallax method. The growth rates are measured to be 0.07``/year for DO Aql and 0.32``/year for V4362 Sgr. A preliminary investigation into the ionisation structure of the nova shell associated with V4362 Sgr is presented. The observed ionisation structure of nova shells depends strongly on their morphology and the orientation of the central component towards the observer. X-ray, IR and UV observations as well as optical integral field unit spectroscopy are required to better understand these interesting objects.
