Optical and NIR investigation of a sample of tidal dwarf candidates

Optical and NIR investigation of a sample of tidal dwarf candidates

We analyzed a sample of 44 candidates for Tidal Dwarf Galaxies (TDGs) previously selected on optical imaging with low resolution spectroscopy. Most of the TDG candidates have the same redshift as the interacting system, 3 of them very likely are low metallicity dwarf galaxies in projection, and 13 s...

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Veröffentlicht in:Astrophysics and space science 2003-01, Vol.284 (2), p.639-642
Hauptverfasser: Weilbacher, Peter M, Fritze-von Alvensleben, U, Duc, P-a
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Astrophysics
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Star & galaxy formation
Stars & galaxies
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creator Weilbacher, Peter M
Fritze-von Alvensleben, U
Duc, P-a
description We analyzed a sample of 44 candidates for Tidal Dwarf Galaxies (TDGs) previously selected on optical imaging with low resolution spectroscopy. Most of the TDG candidates have the same redshift as the interacting system, 3 of them very likely are low metallicity dwarf galaxies in projection, and 13 show signs of kinematics decoupled from their hosting tidal tail. Subsequent NIR photometry in combination with evolutionary synthesis modeling allows us to derive stellar masses, star formation rates, and the ratio of old to young stars within each TDG candidate.
doi_str_mv 10.1023/A:1024082728293
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subjects Astrophysics
Candidates
Star & galaxy formation
Stars & galaxies
title Optical and NIR investigation of a sample of tidal dwarf candidates
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