Measurement of Precise Black Hole Masses using the Atacama Large Millimeter/submillimeter Array

该团队将使用一个新的设施，阿塔卡马大型毫米/亚毫米阵列（阿尔马），测量星系中心超大质量黑洞附近气体的运动。 气体运动将被建模，以获得精确的黑洞质量。 需要这样的精确度来测试黑洞与其宿主星系同步生长的令人困惑的暗示。 精确的质量也将锚库存的黑洞在当地的宇宙。 该团队还将研究气体的性质。 高级团队成员将指导来自代表性不足群体的初级成员;来自加州州立大学和社区学院的本科生将有超出他们自己机构的研究机会。该团队将利用阿尔马的精细角分辨率来研究超大质量黑洞势阱深处的分子气体盘。 他们的目标是：（1）利用最初的阿尔马观测来识别具有高速旋转的目标系统;（2）利用后续的阿尔马观测来约束黑洞的质量及其冷的环核盘的性质。

The team will use a new facility, the Atacama Large Millimeter/submillimeter Array (ALMA), to measure the motions of gas close to supermassive black holes at the centers of galaxies. The gas motions will be modeled to obtain precise black hole masses. Such precision is needed to test puzzling hints that black holes grow in lock step with their host galaxies. The precise masses will also anchor inventories of black holes in the local universe. The team will also study the properties of the gas. Senior team members will mentor junior members drawn from underrepresented groups; undergraduate students from California State Universities and Community Colleges will have research opportunities beyond those available in their own institutions. The team will use ALMA's exquisite angular resolution to study molecular gas disks deep in the potential well of supermassive black holes. Their goals are to (1) use initial ALMA observations to identify target systems with high-velocity rotation and (2) use follow-up ALMA observations to constrain the masses of the black holes and the properties of their cold, circumnuclear disks.