arXiv subjects

J. Gribbin

Publications and source records attributed to J. Gribbin.

2 recordsLinked to original sources

arXiv1997

New Determination of the Hubble Parameter Using the Principle of Terrestrial Mediocrity

Measurements of the linear diameters of 12 nearby spiral galaxies with distances determined from primary indicators suggest that both the Milky Way Galaxy and M31 are in the middle of the range of sizes for such galaxies. By comparing the measured linear diameters of these nearby systems with the inferred diameters of a sample of more than 3000 spirals with known redshifts, we conclude that the most likely value of the Hubble Parameter lies in the range 50 - 55 km/s Mpc^{-1}.

astro-ph↗

arXiv1997

The Milky Way is just an average spiral

It has been thought for many years that the Milky Way is an overly large spiral galaxy. Using Cephied distances to 17 spiral galaxies we calculate the true linear diameters of those galaxies. These diameters are then compared to that of the Milky Way which is found to be, at most, an averagely sized spiral galaxy. When compared to galaxies of approximately the same Hubble type ($2<T<6$) the Milky Way is found to be slightly undersized. This suggests that the Hubble parameter is at the lower end of the currently accepted range of possibilities.

astro-ph↗