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Faint Galaxy Number-Counts

  • N. Metcalfe (a1), T. Shanks (a1), R. Fong (a1), J. Gardner (a1) and N. Roche (a2)...

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Observers studying the cosmology and evolutionary history of our Universe through the statistical properties of ‘normal’ galaxies have four main tools at their disposal. (1) The number-redshift relation. Although a very powerful diagnostic, spectroscopic surveys are currently limited to B < 24 m and significantly incomplete in the range, 23 m < B < 24 m . (2) Galaxy number-magnitude counts. Although by themselves, they cannot constrain models as tightly as spectroscopy, they can be measured ∼ 4 m fainter, where cosmological effects are expected to be significant. (3) Galaxy colours over a wide wavelength range, which provide additional constraints. (4) The dependence of galaxy clustering with magnitude. ω(θ) can be measured to the limit of the counts.

Here we report on the latest Durham count and clustering work.

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Copyright

References

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Jones, L.R., Fong, R., Shanks, T., Ellis, R.S., Peterson, B.A., 1991, MNRAS, 249, 481
Metcalfe, N., Shanks, T., Fong, R., Jones, L.R., 1991, MNRAS, 249, 498
Metcalfe, N., Shanks, T., Fong, R., Roche, N., 1995, MNRAS, 273, 257
Roche, N., Shanks, T., Metcalfe, N., Fong, R., 1993, MNRAS, 263, 360
Roche, N., Shanks, T., Metcalfe, N., Fong, R., 1994 in MacGillivray, et al., eds, IAU Symp. 161, Astronomy from Wide-Field Imaging. Kluwer, Dordrecht, p. 635
Stevenson, P.R.F., Shanks, T., Fong, R., 1986, in Chiosi, C., Renzini, A., eds, Spectral Evolution of Galaxies. Reidel, Dordrecht, p. 439

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