论文标题
紫外线光谱证实Su lyn是共生恒星
UV spectroscopy confirms SU Lyn to be a symbiotic star
论文作者
论文摘要
苏林（Su Lyn）是一位表面上似乎是不可变的后期M型巨人的明星，最近被认为是基于其硬X射线特性的共生恒星。在低分辨率光谱中，恒星未显示在共生星的光谱中通常看到的高激发线。在目前的工作中，提出了紫外线，光学和近红外观测值，旨在探索和加强该恒星所提出的共生分类。我们的Far-UV 1300-1800 $Å$ SU LYN的光谱是通过Astrosat Mission的紫外有效载荷获得的，显示了典型的共生星的Si IV，C IV，OIII和N III的发射线。紫外线频谱强劲地证实了Su Lyn的共生性质。高分辨率光谱中高激发线的检测进一步巩固了其共生性质。据认识到，其他类似的共生系统的潜在存在可能会显着影响银河系中共生星的普查。
SU Lyn, a star that ostensibly appears to be an unremarkable late M type giant, has recently been proposed to be a symbiotic star largely based on its hard X-ray properties. The star does not display, in low-resolution optical spectra, the high excitation lines typically seen in the spectra of symbiotic stars. In the present work, UV, optical, and near-infrared observations are presented, aimed at exploring and strengthening the proposed symbiotic classification for this star. Our Far-UV 1300-1800$Å$ spectrum of SU Lyn, obtained with the ASTROSAT mission's UVIT payload, shows emission lines of Si IV, C IV, OIII and N III in a spectrum typical of symbiotic stars. The UV spectrum robustly confirms SU Lyn's symbiotic nature. The detection of high excitation lines in a high-resolution optical spectrum further consolidates its symbiotic nature. As is being recognized, the potential existence of other similar symbiotic systems could significantly impact the census of symbiotic stars in the galaxy.
