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Non-Uniformities in the Hubble Flow: Results from a Survey of Elliptical Galaxies

  • Roger L. Davies (a1), David Burstein (a2), Alan Dressler (a3), S. M. Faber (a4), Donald Lynden-Bell (a5), Roberto Terlevich (a6) and Gary Wegner (a7)...

Abstract

We have used a new distance estimator for elliptical galaxies to determine the peculiar velocities, with respect to a uniform Hubble flow, of approximately 400 galaxies. The relative distances of five clusters in common with those of Aaronson et al. (1981, 1986), based on the infrared Tully-Fisher relation for spirals, are in good agreement.

We do not see the reflex of the Local Group motion with respect to the microwave background out to recession velocities of 6000 km s−1. Rather, the frame of elliptical galaxies appears to be moving with respect to the microwave background with a velocity of 600 km s−1 towards 1 = 312°, b = +6°. This motion is consistent with a re-analysis of the Rubin et al. (1976) data on the magnitude-diameter relation for ScI galaxies and with the nearby and cluster samples of Aaronson et al. (1982, 1986).

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References

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Aaronson, M., Dawe, J. A., Dickens, R. J., Mould, J. R. and Murray, J. B., 1981, M.N.R.A.S., 195, 1p.
Aaronson, M., Huchra, J., Mould, J., Schechter, P. L. and Tully, R. B., 1982, Ap. J., 258, 64.
Aaronson, M., Bothun, G., Mould, J. R., Huchra, J., Schommers, R. A., Cornell, M., 1986, Ap. J., 302, 536.
Burstein, D., Davies, R. L., Dressler, A., Faber, S. M., Stone, R. P. S., Lynden-Bell, D., Terlevich, R. J. and Wegner, G., 1987a, in preparation.
Burstein, D., Davies, R. L., Dressler, A., Faber, S. M., Lynden-Bell, D., Terlevich, R. J. and Wegner, G., 1987b, in preparation.
Davies, R. L., Burstein, D., Dressler, A., Faber, S. M., Lynden-Bell, D., Terlevich, R. J. and Wegner, G., 1987, Ap. J. Suppl., in press.
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Dressler, A., Faber, S. M., Burstein, D., Davies, R. L., Lynden-Bell, D., Terlevich, R. J. and Wegner, G., 1987b, Ap. J., in press.
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Rubin, V. C., Ford, W. K., Thonnard, N. and Roberts, M. S., 1976, A. J., 81, 719.
Sandage, A. and Tammann, G. A., 1984, in “Large Scale Structure of the Universe, Cosmology and Fundamental Physics,” ed. Setti, G. and Van Horn, L. (Geneva: CERN), p.127.
Smoot, G. and Lubin, P. M., 1979, Ap. J. Lett. 234, L83.

Non-Uniformities in the Hubble Flow: Results from a Survey of Elliptical Galaxies

  • Roger L. Davies (a1), David Burstein (a2), Alan Dressler (a3), S. M. Faber (a4), Donald Lynden-Bell (a5), Roberto Terlevich (a6) and Gary Wegner (a7)...

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