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Dwarf Galaxies of Tidal Origin -- Relevant for Cosmology ?

1998/05/27 by U. Fritze-v. Alvensleben, U. Fritze–v. Alvensleben, Alvensleben, U. Fritze-v. +5
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/9805330

4 pages Latex, using moriond.sty To appear in Dwarf Galaxies and Cosmology, eds. T. X. Thuan, C. Balkowski, V. Cayatte, J. Tran Thanh Van, Editions Frontières

arxiv created 1998/05/27 · openalex publication_date 1998/05/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Evolutionary synthesis models for Tidal Dwarf Galaxies (TDGs) are presented that allow to have varying proportions of young stars formed in the merger-induced starburst and of stars from the merging spirals' disks. The specific metallicities as well as the gaseous emission of actively star forming TDGs are consistently accounted for. Comparison of models with observational data (e.g. Duc, this volume) gives information on the present evolutionary state and possible future luminosity evolution of TDGs. The redshift evolution of merger rates and of the gas content and metallicities of spiral galaxies are used to estimate the number of TDGs at various redshifts and to investigate their contribution to magnitude limited surveys.

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