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The Megamaser Cosmology Project. V. An Angular Diameter Distance to NGC 6264 at 140 Mpc
Chengyu Kuo, James A. Braatz, Mark J. Reid +4
We present the direct measurement of the Hubble constant, yielding the direct measurement of the angular-diameter distance to NGC 6264 using the HO megamaser technique. Our m…
Mrk 1419 - a new distance determination
C. M. Violette Impellizzeri, James A. Braatz, Cheng-Yu Kuo +4
Water vapor megamasers from the center of active galaxies provide a powerful tool to trace accretion disks at sub-parsec resolution and, through an entirely geometrical method, mea…
Cosmology and the Hubble Constant: On the Megamaser Cosmology Project (MCP)
C. Henkel, J. A. Braatz, M. J. Reid +4
The Hubble constant Ho describes not only the expansion of local space at redshift z ~ 0, but is also a fundamental parameter determining the evolution of the universe. Recent meas…