椭圆星系中恒星形成的冷气体吸积、热蒸发和猝灭
Cool gas accretion, thermal evaporation and quenching of star formation in elliptical galaxies
摘要：
星系色星等图最明显的特征是静止星系的红色序列，一直延伸到最亮的椭圆星系，以及恒星形成星系的蓝色云，它在亮度L~L* 处被截断。蓝色云的截断表明，在最大质量的系统中，恒星的形成必须被淬灭。要做到这一点，维里温度的银河系气体必须保持高温，任何吸积的冷气体必须被加热。吸积的冷气体的消失可能是由于热的星际介质的热蒸发，而热的星际介质反过来又被活动星系核的反馈阻止冷却。
英文摘要：
The most evident features of colour-magnitude diagrams of galaxies are the red sequence of quiescent galaxies, extending up to the brightest elliptical galaxies, and the blue cloud of star-forming galaxies, which is truncated at a luminosity L~L*. The truncation of the blue cloud indicates that in the most massive systems star formation must be quenched. For this to happen the virial-temperature galactic gas must be kept hot and any accreted cold gas must be heated. The elimination of accreted cold gas can be due to thermal evaporation by the hot interstellar medium, which in turn is prevented from cooling by feedback from active galactic nuclei.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
