A method for determining the cosmological deceleration parameter q0


THE availability of deep plates from the UK 48-inch Schmidt combined with the ability to measure the apparent magnitude of large numbers of images using the Royal Observatory Edinburgh COSMOS machine has made possible a new experiment to determine the cosmological deceleration constant q0. We have constructed a number–magnitude plot for a large sample of images and compared this with a number of simulated curves representing different values of q0.

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HAWKINS, M., MARTIN, R. A method for determining the cosmological deceleration parameter q0. Nature 265, 711–713 (1977). https://doi.org/10.1038/265711a0

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