Recent studies of Tidal Disruption Events (TDEs) have revealed unexpected correlations between the TDE rate and the large-scale properties of the host galaxies. In this review, we present the host galaxy properties of all TDE candidates known to date and quantify their distributions. We consider throughout the differences between observationally-identified types of TDEs and differences from spectroscopic control samples of galaxies. We focus here on the black hole and stellar masses of TDE host galaxies, their star formation histories and stellar populations, the concentration and morphology of the optical light, the presence of AGN activity, and the extra-galactic environment of the TDE hosts. We summarize the state of several possible explanations for the links between the TDE rate and host galaxy type. We present estimates of the TDE rate for different host galaxy types and quantify the degree to which rate enhancement in some types results in rate suppression in others. We discuss the possibilities for using TDE host galaxies to assist in identifying TDEs in upcoming large transient surveys and possibilities for TDE observations to be used to study their host galaxies.

中文翻译：

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潮汐干扰事件的宿主星系

最近对潮汐干扰事件 (TDE) 的研究揭示了 TDE 速率与宿主星系的大尺度特性之间出乎意料的相关性。在这篇综述中，我们展示了迄今为止已知的所有 TDE 候选者的宿主星系特性，并量化了它们的分布。我们考虑了观察识别的 TDE 类型之间的差异以及与星系光谱控制样本的差异。我们在此关注 TDE 宿主星系的黑洞和恒星质量、它们的恒星形成历史和恒星种群、光学光的浓度和形态、AGN 活动的存在以及 TDE 宿主的星系外环境。我们总结了 TDE 速率和宿主星系类型之间联系的几种可能解释的状态。我们提供了不同宿主星系类型的 TDE 速率的估计值，并量化了某些类型的速率增强导致其他类型的速率抑制的程度。我们讨论了在即将到来的大型瞬态调查中使用 TDE 宿主星系来帮助识别 TDE 的可能性，以及使用 TDE 观测来研究宿主星系的可能性。