The DEEP2 Galaxy Redshift Survey: Evolution of close galaxy pairs and major-merger rates up to z ~ 1.2

@article{Lin2004TheDG,
  title={The DEEP2 Galaxy Redshift Survey: Evolution of close galaxy pairs and major-merger rates up to z ~ 1.2},
  author={Lihwai Lin and David C. Koo and Christopher N. A. Willmer and David Robert Patton and Christopher J. Conselice and Renbin Yan and Alison L. Coil and Michael C. Cooper and Marc Davis and Sandra Moore Faber and Brian Francis Gerke and Puragra Guhathakurta and Jeffrey A. Newman National Taiwan University and U C Santa Cruz and Trent University and Caltech and Uc Berkeley and Hubble Fellow Lawrence Berkeley National Laboratory},
  journal={The Astrophysical Journal},
  year={2004},
  volume={617}
}
  • Lihwai Lin, David C. Koo, +15 authors Hubble Fellow Lawrence Berkeley National Laboratory
  • Published 2004
  • Physics
  • The Astrophysical Journal
  • We derive the close, kinematic pair fraction and merger rate up to redshift z ~ 1.2 from the initial data of the DEEP2 Redshift Survey. Assuming a mild luminosity evolution, the number of companions per luminous galaxy is found to evolve as (1 + z)m, with m = 0.51 ± 0.28; assuming no evolution, m = 1.60 ± 0.29. Our results imply that only 9% of present-day L* galaxies have undergone major mergers since z ~ 1.2 and that the average major merger rate is about 4 × 10-4 h3 Mpc-3 Gyr-1 for z ~ 0.5-1… CONTINUE READING

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