The Galaxy Merger Rate in the Hubble Ultra-Deep Field at z>1

Details The Galaxy Merger Rate in the Hubble Ultra-Deep Field at z>1 The Galaxy Merger Rate in the Hubble Ultra-Deep Field at z>1

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.0807r&link_type=abstract

American Astronomical Society Meeting 210, #08.07; Bulletin of the American Astronomical Society, Vol. 39, p.104

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a measurement of the galaxy merger rate to z 2.5 from Hubble Ultra-Deep Field high-resolution imaging and redshifts. We measure the merger rate from two methods: the traditional pair count and the Lee ratio, a statistic developed to quantify the bimodality in a dataset. With these methods, we show that the merger rate significantly deviates from the traditional power-law parametrization and peaks at z 2. For 0.51) merging is essential.

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