论文标题
在GK Persei和其他古典Novae中寻找凉爽的分子气
A search for cool molecular gas in GK Persei and other classical novae
论文作者
论文摘要
从经典的Nova残留物中检测分子线发射具有揭示有关射出组成的信息，特别是它可以在热核失控处理的问题中提供准确的同位素比。我们对100多个经典Novae进行了搜索，以在CO或HCN分子的线上发射单次望远镜，并在毫米和亚毫升波长处进行了干涉阵列。调查表明，年轻人或老年人不是在亚毫米和毫米波长下分子发射的强大来源。此外，我们在1901年Nova Persei（GK Per）附近绘制了CO排放，早些时候声称是本性的。我们的测量表明，观察到的发射来自星际介质。尽管在古典Novae中没有发现毫米和亚毫米波长的分子发射，但仍有可能通过高灵敏干扰仪（例如Alma）检测到一些分子。
Detecting molecular line emission from classical nova remnants has the potential of revealing information on the composition of the ejecta, in particular, it can deliver accurate isotopic ratios in the matter processed by a thermonuclear runaway. We conducted searches toward more than 100 classical novae for emission in lines of the CO or HCN molecules using single-dish telescopes and interferometric arrays at millimeter and submillimeter wavelengths. The survey demonstrates that classical novae, young or old, are not strong sources of molecular emission at submillimeter and millimeter wavelengths. Additionally, we mapped CO emission around Nova Persei 1901 (GK Per), earlier claimed to be circumstellar in origin. Our measurements indicate that the observed emission is from the interstellar medium. Although no molecular emission at millimeter and submillimeter wavelengths has been found in classical novae, it is still likely that some will be detected with high-sensitivity interferometers such as ALMA.
