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Galaxy Evolution from Deep Galaxy Counts

Published online by Cambridge University Press:  07 August 2017

J. P. Gardner
J. P. Gardner*
Affiliation:
University of Durham, Department of Physics, South Road, Durham DE1 3LE, U.K. (jonathan.gardner@durham.ac.uk)

Abstract

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We present deep galaxy number counts and colours of K – band selected galaxy surveys. We argue that primeval galaxies are present within the survey data, but have remained unidentified. There are few objects with the colours of an L∗ elliptical galaxy at a redshift of z ≈ 1, in contradiction to standard luminosity evolution models. We present K – band photometry of the objects in a spectroscopic redshift survey selected at 21 < B < 22.5. The absolute K magnitudes of the galaxies are consistent with the no-evolution or pure luminosity evolution models. The excess faint blue galaxies seen in the B – band number counts at intermediate magnitudes are a result of a low normalization, and do not dominate the population until B ≈ 25. Extreme merging or excess dwarf models are not needed at z < 1.

Type
Session 7: Galaxies at Large Redshift
Information
Symposium - International Astronomical Union , Volume 164: Stellar Populations , 1995 , pp. 311 - 319
Copyright
Copyright © Kluwer 1995 

References

Allington-Smith, J., et al., 1992, Gemini 36, 4 Google Scholar
Broadhurst, T. J., Ellis, R. S. and Shanks, T., 1988, M. N. R. A. S. 235, 827 Google Scholar
Broadhurst, T. J., Ellis, R. S., Koo, D. C. and Szalay, A. S., 1990, Nature 343, 726 Google Scholar
Broadhurst, T. J., Ellis, R. S. and Glazebrook, K., 1992, Nature 355, 55 Google Scholar
Colless, M., Ellis, R. S., Taylor, K. and Hook, R. N., 1990, M. N. R. A. S. 244, 408 Google Scholar
Colless, M., Ellis, R. S., Broadhurst, T. J., Taylor, K. and Peterson, B. A., 1993, M. N. R. A. S. 261, 19 Google Scholar
Cowie, L. L., Songaila, A. and Hu, E. M., 1991, Nature 354, 460 Google Scholar
Gardner, J. P., Cowie, L. L. and Wainscoat, R. J., 1993, Ap. J. Lett. 415, L9 Google Scholar
Gardner, J. P., 1994, Ap. J., submitted.Google Scholar
Lilly, S. J., & Cowie, L. L., 1987, Infrared Astronomy with Arrays, eds. Wynn-Williams, C. G. and Becklin, E. E., 473, University of Hawaii, Honolulu Google Scholar
Lilly, S. J., Cowie, L. L. and Gardner, J. P., 1991, Ap. J. 369, 79 Google Scholar
Maddox, S. J., Sutherland, W. J., Efstathiou, G., Loveday, J. and Peterson, B. A., 1990, M. N. R. A. S. 247, 1P Google Scholar
Metcalfe, N., Shanks, T. Fong, R. and Roche, N., 1994, M. N. R. A. S., in press.Google Scholar
Mobasher, B., Ellis, R. S. and Sharples, R. M., 1986, M. N. R. A. S. 223, 11 Google Scholar
Partridge, R. B., Peebles, P. J. E., 1967, Ap. J. 147, 868 Google Scholar
Peterson, B. A., Ellis, R. S., Efstathiou, G., Shanks, T., Bean, A. J., Fong, R., Zen-Long, Z., 1986, M. N. R. A. S. 221, 233 Google Scholar
Shanks, T., 1990 The Galactic and Extragalactic Background Radiation, eds. Bowyer, S. and Leinert, C., 269, IAU, Netherlands Google Scholar
Tyson, J. A., 1988 A. J. 96, 1 Google Scholar
Yoshii, Y. and Takahara, F., 1988 Ap. J. 326, 1 Google Scholar