Tidal Dwarf Galaxies at Intermediate Redshifts

Details Tidal Dwarf Galaxies at Intermediate Redshifts Tidal Dwarf Galaxies at Intermediate Redshifts

2011-03-13

arxiv.org/abs/1103.2546v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

9 pages, 5 figures, Accepted for publication in Astrophysics & Space Science

Scientific paper

We present the first attempt at measuring the production rate of tidal dwarf galaxies (TDGs) and estimating their contribution to the overall dwarf population. Using HST/ACS deep imaging data from GOODS and GEMS surveys in conjunction with photometric redshifts from COMBO-17 survey, we performed a morphological analysis for a sample of merging/interacting galaxies in the Extended Chandra Deep Field South and identified tidal dwarf candidates in the rest-frame optical bands. We estimated a production rate about 1.4 {\times} 10^{-5} per Gyr per comoving volume for long-lived TDGs with stellar mass 3 {\times} 10^{8-9} solar mass at 0.5

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