标题： 阿雷西博OH巨脉泽巡天与星系并合率 显示英文标题

标题： The Arecibo OH Megamaser Survey and the Galaxy Merger Rate

摘要： 我们介绍了阿雷西博天文台正在进行的一项 OH 巨脉泽（OH megamasers，OHMs）巡天的最新结果。 该巡天已完成 2/3，从红移选择的 IRAS 星系样本中获得了较高的 OHM 探测率（六分之一）。 巡天将 OHM 光度函数与星系合并率联系起来，使后续的盲 OHM 巡天能够根据宇宙时间测量星系合并率。 此外，该巡天还首次探测到了 OHM 的强烈变化性。 这种变化性将为理解 OHM 的小尺度物理环境和机制提供强有力的工具。 显示英文摘要

摘要： We present the current results of a survey for OH megamasers (OHMs) underway at the Arecibo Observatory. The survey is 2/3 complete and has produced a high OHM detection rate (1 in 6) from a redshift-selected sample of IRAS galaxies. The survey will relate the OHM luminosity function to the galaxy merger rate, allowing subsequent blind OHM surveys to measure the galaxy merger rate as a function of cosmic time. The survey has also made the first detection of strong variability in OHMs. Variability will provide a powerful tool for understanding the small-scale physical settings and mechanisms of OHMs.