论文标题
矮星系中恒星反馈的观察性约束
Observational constraints on stellar feedback in dwarf galaxies
论文作者
论文摘要
电离辐射，恒星风和超新星对星际介质（ISM）的反馈对于调节星系中的恒星形成至关重要。由于其低质量（$ m _ {*} <10^{9} $ \，m $ _ \ odot $），矮星系特别容易受到此类过程的影响，使其成为研究反馈详细物理的理想站点。从这个角度来看，我们总结了来自恒星形成区域的反馈的最新观察证据，以及这如何驱动“超级泡沫”和全银河系的风的形成。我们讨论了最小的星系中外部电离辐射的重要作用 - “回报”。而且，我们讨论了这种反馈直接影响星系特性的观察证据，例如它们的星形形成历史，金属含量，颜色，大小，形态，甚至其内部暗物质密度。我们以展望未来的方式结束，总结了尚未得到答复的关键问题，并列出了银河系理论的一些杰出挑战。
Feedback to the interstellar medium (ISM) from ionising radiation, stellar winds and supernovae is central to regulating star formation in galaxies. Due to their low mass ($M_{*} < 10^{9}$\,M$_\odot$), dwarf galaxies are particularly susceptible to such processes, making them ideal sites to study the detailed physics of feedback. In this perspective, we summarise the latest observational evidences for feedback from star forming regions and how this drives the formation of 'superbubbles' and galaxy-wide winds. We discuss the important role of external ionising radiation -- 'reionisation' -- for the smallest galaxies. And, we discuss the observational evidences that this feedback directly impacts galaxy properties such as their star formation histories, metal content, colours, sizes, morphologies and even their inner dark matter densities. We conclude with a look to the future, summarising the key questions that remain unanswered and listing some of the outstanding challenges for galaxy formation theories.
