Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986sssmp..29..966g&link_type=abstract
Scientia Sinica, Series A - Mathematical, Physical, Astronomical and Technical Sciences (ISSN 0253-5831), vol. 29, Sept. 1986, p
Astronomy and Astrophysics
Astronomy
1
Deceleration, Quasars, Radio Galaxies, Spatial Distribution, Big Bang Cosmology, Red Shift
Scientific paper
The effect of the choice of deceleration parameter (q0) on the volume method proposed by Schmidt (1968) to test the uniformity of the space distribution of objects such as QSOs or radio galaxies is investigated analytically for the case of a zero-pressure matter-dominated Friedman universe. Theoretical volume ratios V/Vm are calculated for given red shifts z = 0.1-10.0 and q0 as high as 12, and for three observational samples (3CR, 4C, and Parkes) at q0 = 0-3.0; the results are presented in tables and graphs, and the relationships among the parameters V, Vm, z, z(m), and q0 are explored. V/Vm is found to be sensitive to q0 only for small z, and it is inferred that the volume test is reliable for q0 less than 1 but must be used very carefully for q0 greater than 2 or 3 and large z.
Gong Shumo
Li Haojiang
Xia Changli
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