Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aj....114.2212g&link_type=abstract
Astronomical Journal v.114, p.2212
Astronomy and Astrophysics
Astronomy
12
Distance Scale, Galaxies: Distances And Redshifts, Galaxies: Spiral
Scientific paper
Measurements of the linear diameters of 12 nearby spiral galaxies, with Hubble types similar to that of the Milky Way and distances determined from primary indicators, suggest that the Milky Way and M3 1 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 1300 spirals with known redshifts, we conclude that the most likely value of the Hubble Parameter lies in the range 50-55 km s-1 Mpc-1. By considering the distribution of the order statistics of the nearby sample, we conclude that values of H0> 80 km s-1 Mpc-1 are excluded at the 1 per cent level, based largely on the presence of two galaxies with linear diameters of D25≍60 kpc in the nearby sample provided that these nearby spirals are a fair sample from the global distribution of linear diameters deduced from the more distant sample.
Goodwin Simon P.
Gribbin John
Hendry Martin A.
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