Christian Henkel

TL;DR: In this paper, the authors used the very long baseline interferometry images and kinematics of water maser emission in six active galaxies: NGC 1194, NGC 2273 and NGC 2960, plus a seventh previously published, to determine accurate enclosed masses within the central ~0.3 pc of these galaxies, smaller than the radius of the sphere of influence of the central mass in all cases.

TL;DR: In this article, an improved approach for fitting maser data and obtained better distance estimates for four galaxies previously published by the Megamaser Cosmology Project: UGC 3789, NGC 6264 and NGC 6323, with a confidence level varying from 95% to 99% for different treatments of the peculiar velocities.

TL;DR: In this article, the Atacama Large Millimeter Array (ALMA) was used to map the emission of the CO(6-5) molecular line and the 432 mu m continuum emission from the 300 pc sized circumnuclear disk (CND) of the nearby Seyfert 2 galaxy NGC 1068 with a spatial resolution of similar to 4 pc.

TL;DR: In this paper, the authors reported the detection of high excitation CO emission from the most distant quasar currently known, SDSS J114816.64+525150.3, at a redshift z= 6:419.

TL;DR: The Atacama Pathfinder Experiment (APEX) 12 m telescope was used to observe the J(KAKc) = 3(03) -> 2(02), 3(22)-> 2(21), and 3(21)->2(20) transitions of para-H2CO at 218 GHz simultaneously to determine kinetic temperatures of the dense gas in the central molecular zone (CMZ) of our Galaxy as discussed by the authors.