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An accelerating Universe


New data on the Hubble diagram, combined with constraints on the density of the Universe and the ages of galaxies, suggest that the most plausible cosmological models have a positive cosmological constant, are closed, too dense to make deuterium in the big bang, and will expand for ever. Possible errors in the supporting arguments are discussed.

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  1. Petrosian, V., in Confrontation of Cosmological Theories with Observational Data (edit. by Longair, M. S.) (Reidel, Dordrecht, 1974).

    Google Scholar 

  2. North, J. D., The Measure of the Universe (Clarendon, Oxford, 1965).

    MATH  Google Scholar 

  3. Petrosian, V., Salpeter, E. E., and Szekeres, P., Astrophys. J., 147, 1222 (1967).

    Article  ADS  Google Scholar 

  4. Gunn, J. E., and Oke, J. B., Astrophys. J., 195, 255 (1975).

    Article  ADS  Google Scholar 

  5. Zel'dovich, Ya. B., Uspekhi, 95, 209 (1968) (English trans.).

    Google Scholar 

  6. Gott, J. R., III, Gunn, J. E., Schramm, D. N., and Tinsley, B. M., Astrophys. J., 194, 543 (1974).

    Article  ADS  CAS  Google Scholar 

  7. Stabell, R., and Refsdal, S., Mon. Not., R. astr. Soc., 132, 379 (1966).

    Article  ADS  Google Scholar 

  8. Tinsley, B. M., Astrophys. J. 198, 145 (1975).

    Article  ADS  Google Scholar 

  9. Morgan, W. W., Publs astr. Soc. Pacif., 71, 92 (1959).

    Article  ADS  CAS  Google Scholar 

  10. Baum, W. A., Publs astr. Soc. Pacif., 71, 106 (1959).

    Article  ADS  Google Scholar 

  11. Morgan, W. W., and Osterbrock, D. F., Astr. J., 74, 515 (1969).

    Article  ADS  Google Scholar 

  12. Faber, S. M., Astrophys. J., 179, 731 (1973).

    Article  ADS  CAS  Google Scholar 

  13. McClure, R. D., and van den Bergh, S., Astr. J., 73, 313 (1968).

    Article  ADS  Google Scholar 

  14. Peebles, P. J. E., Physical Cosmology (Princeton University Press, New York, 1971).

    Google Scholar 

  15. Peebles, P. J. E., Comments Astrophys. Space Phys., 3, 20 (1971).

    ADS  CAS  Google Scholar 

  16. Tinsley, B. M., Astr. Astrophys., 24, 89 (1973).

    ADS  Google Scholar 

  17. Weaver, T. A., and Chaplin, O. F., Astrophys. J. Lett., 192, L57 (1974).

    Article  ADS  Google Scholar 

  18. Colgate, S. A., Astrophys. J., 195, 493 (1975).

    Article  ADS  CAS  Google Scholar 

  19. Petrosian, V., and Salpeter, E. E., Astrophys. J., 151, 411 (1968).

    Article  ADS  Google Scholar 

  20. Tinsley, B. M., and Gunn, J. E., Astrophys. J. (in the press).

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Gunn, J., Tinsley, B. An accelerating Universe. Nature 257, 454–457 (1975).

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