Megamaser Disk Galaxies and Secular Black Hole Growth

该计划将研究黑洞吸积的力学和影响，在被动发展的螺旋星系使用一个独特的样本盘星系托管水megamers在其核。 黑洞的进食将通过测量脉泽的运动学来评估，从几十秒差距到十分之一秒差距的尺度。 格林博士将在20秒差距尺度上比较恒星和气体的运动学，从自适应光学加上积分场光谱学，到亚秒差距尺度上的超脉泽盘的方向，以了解气体如何吸积到盘上。 她将确定长期（长期）演化是否导致黑洞质量和星系属性之间的紧密相关性，包括凸起运动学，星系质量和暗晕质量。这项工作的更广泛影响包括本科生和研究生的培训，通过公开讲座进行宣传，并通过监狱教学计划向囚犯教授数学。

This program will study the mechanics and implications of black hole accretion in passively evolving spiral galaxies using a unique sample of disk galaxies hosting water megamasers in their nuclei. Feeding of the black hole will be assessed by measuring the kinematics of the masers from scales of tens of parsecs down to tenths of parsecs. Dr. Greene will compare the stellar and gaseous kinematics on 20 parsec scales from adaptive-optics plus integral-field spectroscopy, to the orientation of the megamaser disk on sub-parsec scales, to learn how the gas accretes onto the disk. She will determine whether secular (long-term) evolution leads to tight correlations between black hole mass and galaxy properties, including bulge kinematics, galaxy mass, and dark halo mass.Broader impacts of the work include training of undergraduate and graduate students, outreach via public lectures, and teaching math to inmates through the Prison Teaching Initiative.