info:eu-repo/semantics/article
Optical spectroscopy of young tidal objects around two interacting galaxy pairs
Fecha
2018-10Registro en:
Lee-Waddell, K.; Madrid, J. P.; Spekkens, K; Donzelli, Carlos Jose; Koribalski, B. S.; et al.; Optical spectroscopy of young tidal objects around two interacting galaxy pairs; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 480; 2; 10-2018; 2719-2725
0035-8711
1365-2966
CONICET Digital
CONICET
Autor
Lee-Waddell, K.
Madrid, J. P.
Spekkens, K
Donzelli, Carlos Jose
Koribalski, B. S.
Serra, P.
Cannon, J
Resumen
We present Gemini Multi-Object Spectrograph spectra of HI-rich tidal features located around the outskirts of two interacting galaxy pairs, NGC 3166/9 and NGC 4725/47. These follow-up observations are part of a multiwavelength campaign to study the properties and frequency of tidal dwarf galaxies (TDGs) in group environments. Based on the calculated gas-phase metallicity and redshift, in addition to the previously measured HI and stellar properties, we have confirmed the tidal origins of TDG candidate AGC 208457, which has emerged from the tidal debris of an interaction between the NGC 3166/9 galaxy pair. By comparing HI and optical recessional velocities, we have also confirmed a physical association of the gaseous knots and star clusters embedded in the metal-rich tidal tail of NGC 4747.
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