We report the first detection of multiphase gas within a quiescent galaxy beyond z≈0. The observations use the brighter image of doubly lensed QSO HE 0047−1756 to probe the interstellar medium (ISM) of the massive () elliptical lens galaxy at . Using Hubble Space Telescope's Cosmic Origins Spectrograph (COS), we obtain a medium-resolution FUV spectrum of the lensed QSO and identify numerous absorption features from H₂ in the lens ISM at projected distance d=4.6 kpc. The H₂ column density is with a molecular gas fraction of , roughly consistent with some local quiescent galaxies. The new COS spectrum also reveals kinematically complex absorption features from highly ionized species O vi and N v with column densities log N(O vi) and log N(N v), among the highest known in external galaxies. Assuming the high-ionization absorption features originate in a transient warm (T ∼ 10⁵ K) phase undergoing radiative cooling from a hot halo surrounding the galaxy, we infer a mass accretion rate of . The lack of star formation in the lens suggests that the bulk of this flow is returned to the hot halo, implying a heating rate of . Continuous heating from evolved stellar populations (primarily SNe Ia but also winds from AGB stars) may suffice to prevent a large accumulation of cold gas in the ISM, even in the absence of strong feedback from an active nucleus.

我们报告多相气体的第一检测静态星系内超越ž ≈0。观测结果使用双透镜QSO HE 0047-1756的较亮图像，以探测位于的椭圆形大透镜星系的星际介质（ISM）。使用哈勃太空望远镜的宇宙起源光谱仪（COS），我们获得了透镜QSO的中分辨率FUV光谱，并在投影距离d = 4.6 kpc时从透镜ISM的H ₂中识别出许多吸收特征。H ₂柱密度的分子气体分数为，大致与某些本地静态星系一致。新的COS光谱还揭示了高度电离的物种O vi和N v的运动学上复杂的吸收特征，其列密度为log N（O vi）和log N（N v），是外星系中已知最高的。假设高电离吸收特征在瞬态温暖起源（Ť〜10 ⁵ K）相位发生辐射从热晕围绕星系冷却，我们推断的质量吸积率。晶状体中缺乏恒星形成，表明大部分这种流返回到热晕，这意味着加热速率为。即使没有活动核的强烈反馈，来自不断演化的恒星种群（主要是SNe Ia，也来自AGB恒星的风）的持续加热可能足以防止ISM中大量冷气积聚。