A geometric distance to the galaxy NGC4258 from orbital motions in a nuclear gas disk

Authors :: Hernstein, J.R.
Moran, J.M.
Greenhill, L.J.
Diamond, P.J>
Inoue, M.
Nakai, N.
Miyoshi, M.
Henkel, C.
Riess, A.
Source :: Nature. August 5, 1999, Vol. 400 Issue 6744, p539, 3 p.
Publication Year :: 1999
Abstract: Accurate measurements of extragalactic distances is required for realistic descriptions of the age, geometry and fate of the Universe. A geometric distance to the galaxy NGC4258 is reported, taken from direct measurements of orbital motions in the gas disk around the nucleus of the galaxy. The distance, 7.2 plus or minus 0.3 Mpc is more precise than any extragalactic distance yet measured.

Subjects :: Galaxies -- Research
Extragalactic distances -- Research
Environmental issues
Science and technology
Zoology and wildlife conservation

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