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- W3099047340 abstract "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 1.4×10−5 per Gyr per comoving volume for long-lived TDGs with stellar mass 3×108−9 M⊙ at 0.5<z<1.1. Together with galaxy merger rates and TDG survival rate from the literature, our results suggest that only a marginal fraction (less than 10%) of dwarf galaxies in the local universe could be tidally-originated. TDGs in our sample are on average bluer than their host galaxies in the optical. Stellar population modelling of optical to near-infrared spectral energy distributions (SEDs) for two TDGs favors a burst component with age 400/200 Myr and stellar mass 40%/26% of the total, indicating that a young stellar population newly formed in TDGs. This is consistent with the episodic star formation histories found for nearby TDGs." @default.
- W3099047340 created "2020-11-23" @default.
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- W3099047340 date "2011-11-03" @default.
- W3099047340 modified "2023-10-16" @default.
- W3099047340 title "Tidal dwarf galaxies at intermediate redshifts" @default.
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- W3099047340 doi "https://doi.org/10.1007/s10509-011-0882-8" @default.
- W3099047340 hasPublicationYear "2011" @default.
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