Statistics of interacting galaxies at z ~ 0.7
Astronomy Letters, ISSN: 1063-7737, Vol: 37, Issue: 11, Page: 743-750
2011
- 2Citations
- 9Captures
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Article Description
We present the results of our analysis of the frequencies of galaxies with tidal tails and M51-type galaxies in several deep fields of the Hubble Space Telescope (HDF-N, HDF-S, HUDF, GOODS, GEMS). In total, we have found about seven hundred interacting galaxies at redshifts z ≤ 1. 5 in these fields. At z ≤ 0. 7, the observed space densities of galaxies with tidal structures and M51-type galaxies have been found to increase as ∝(1 + z), where m ≈ 2. 6. According to our estimates, over the last 6-7 Gyr, i. e., at z ≤ 0. 7, about a third of the galaxies with M(B) ≤ -18 must have undergone strong gravitational perturbations and mergers and ~1/10-1/5 of the galaxies have swallowed relatively low-mass nearby satellites typical of M51-type galaxies. The possible decrease in the time scale on which a distant galaxy appears peculiar with growing z can increase considerably the estimated rate of mergers. © 2011 Pleiades Publishing, Ltd.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=80155177676&origin=inward; http://dx.doi.org/10.1134/s1063773711110028; http://link.springer.com/10.1134/S1063773711110028; http://www.springerlink.com/index/pdf/10.1134/S1063773711110028; http://link.springer.com/content/pdf/10.1134/S1063773711110028; http://link.springer.com/content/pdf/10.1134/S1063773711110028.pdf; http://link.springer.com/article/10.1134/S1063773711110028/fulltext.html; https://dx.doi.org/10.1134/s1063773711110028; https://link.springer.com/article/10.1134/S1063773711110028; http://www.springerlink.com/index/10.1134/S1063773711110028
Pleiades Publishing Ltd
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