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The Megamaser Cosmology Project VIII. A Geometric Distance to NGC 5765b
F. Gao, J. A. Braatz, M. J. Reid +7
As part of the Megamaser Cosmology Project (MCP), here we present a new geometric distance measurement to the megamaser galaxy NGC 5765b. Through a series of VLBI observations, we…
The Megamaser Cosmology Project. VII. Investigating disk physics using spectral monitoring observations
Dominic W. Pesce, James A. Braatz, James J. Condon +5
We use single-dish radio spectra of known 22 GHz HO megamasers, primarily gathered from the large dataset observed by the Megamaser Cosmology Project, to identify Keplerian acc…
The Destruction of the Circumstellar Ring of SN 1987A
Claes Fransson, Josefin Larsson, Katia Migotto +23
We present imaging and spectroscopic observations with HST and VLT of the ring of SN 1987A from 1994 to 2014. After an almost exponential increase of the shocked emission from the…