论文标题
星形矮星系的化学和恒星特性
Chemical and stellar properties of star-forming dwarf galaxies
论文作者
论文摘要
矮星系是最小的，最丰富，分布最广泛的星系类型。因此，它们是测试星系和宇宙进化理论的关键。矮星系足够接近以使其气体和详细研究的恒星组成部分特别有趣，因为它们的性质和进化可以通过准确性来推断。这篇评论总结了对星形矮星系的出色和化学性质的所知，比$ \ sim $ 20 MPC更接近。鉴于它们的低金属性，高气体含量和持续的恒星形成，这些物体应该类似于最早以最早时代形成的第一个星系，因此可以代表遥远的早期宇宙上的窗户。我们描述了过去十年中获得的主要结果，这些结果在恒星形成历史，化学丰度，星系形成和星形矮人的演变以及不确定性仍影响这些结果的情况下获得。
Dwarf galaxies are the least massive, most abundant, and most widely distributed type of galaxies. Hence, they are key to testing theories of galaxy and Universe evolution. Dwarf galaxies sufficiently close to have their gas and stellar components studied in detail are of particular interest, because their properties and their evolution can be inferred with accuracy. This Review summarizes what is known of the stellar and chemical properties of star-forming dwarf galaxies closer than $\sim$20 Mpc. Given their low metallicity, high gas content and ongoing star formation, these objects are supposed to resemble the first galaxies that formed at the earliest epochs, and may thus represent a window on the distant, early Universe. We describe the major results obtained in the past decade on the star formation histories, chemical abundances, galaxy formation and evolution of star-forming dwarfs, and the uncertainties still affecting these results.
