标题： 热亚矮星及其与热核超新星的联系 显示英文标题

标题： Hot subdwarf stars and their connection to thermonuclear supernovae

摘要： 热亚矮星（sdO/B）是具有极薄氢包层的氦燃烧演化核心星，可以通过公共包层抛射形成。具有大质量白矮星（WD）伴星的紧密sdB双星是热核超新星Ia型（SN Ia）的潜在前身。我们发现了这样一个前身候选体以及一颗幸存伴星候选体，后者逃离了银河系。通过将已知的sdB星与自行和光变曲线目录进行交叉匹配，发现了更多这两种天体的候选体。盖亚任务将为我们样本中的所有恒星提供精确的天体测量和光变曲线，使我们能够编制一份更大的全天sdB星目录。这样，我们预计会发现数百个前身双星和喷出的伴星。 显示英文摘要

摘要： Hot subdwarf stars (sdO/Bs) are evolved core helium-burning stars with very thin hydrogen envelopes, which can be formed by common envelope ejection. Close sdB binaries with massive white dwarf (WD) companions are potential progenitors of thermonuclear supernovae type Ia (SN Ia). We discovered such a progenitor candidate as well as a candidate for a surviving companion star, which escapes from the Galaxy. More candidates for both types of objects have been found by crossmatching known sdB stars with proper motion and light curve catalogues. The Gaia mission will provide accurate astrometry and light curves of all the stars in our hot subdwarf sample and will allow us to compile a much larger all-sky catalogue of those stars. In this way we expect to find hundreds of progenitor binaries and ejected companions.