PTF11kx：一颗Ia型超新星与一颗共生的新星祖先
PTF11kx: A Type-Ia Supernova with a Symbiotic Nova Progenitor
摘要：
有一个共识是Ia型超新星（SNe Ia）是由白矮星的热核爆炸产生的，它从一个双星伴星中吸积了物质。然而，对Ia型超新星前身的直接观测仍然缺乏，而这颗双星伴星的确切性质仍然不确定。SN Ia PTF 11kx的高分辨率光谱的时间序列揭示了一个复杂的星周环境，提供了一个前所未有的详细的祖系统。多个壳的circumsteller检测和SN喷出物被认为是相互作用的circumsteller材料（CSM）开始后59天爆炸。这些特征最好由一个共生的新星祖先来描述，类似于RS蛇夫座。
英文摘要：
There is a consensus that Type-Ia supernovae (SNe Ia) arise from the thermonuclear explosion of white dwarf stars that accrete matter from a binary companion. However, direct observation of SN Ia progenitors is lacking, and the precise nature of the binary companion remains uncertain. A temporal series of high-resolution optical spectra of the SN Ia PTF 11kx reveals a complex circumstellar environment that provides an unprecedentedly detailed view of the progenitor system. Multiple shells of circumsteller are detected and the SN ejecta are seen to interact with circumstellar material (CSM) starting 59 days after the explosion. These features are best described by a symbiotic nova progenitor, similar to RS Ophiuchi.
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