Tidal Dwarf Galaxies around a Post-merger Galaxy, NGC 4922

Yun-Kyeong Sheen , Hyunjin Jeong , Sukyoung K. Yi , Ignacio Ferreras , Jennifer M. Lotz , Knut A. G. Olsen , Mark Dickinson , Sydney Barnes

show 15 more authors

Jang-Hyun Park Chang H. Ree Barry F. Madore Tom A. Barlow Tim Conrow Karl Foster Peter G. Friendman Young-Wook Lee D. Christopher Martin Patrick Morrissey Susan G. Neff David Schiminovich Mark Seibert Todd Small Ted K. Wyder

Authors on Pith no claims yet

classification 🌌 astro-ph.CO astro-ph.GA

keywords tidaldwarfgalaxygalaxiesyoungcandidatesmasspost-merger

0 comments

read the original abstract

One possible channel for the formation of dwarf galaxies involves birth in the tidal tails of interacting galaxies. We report the detection of a bright UV tidal tail and several young tidal dwarf galaxy candidates in the post-merger galaxy NGC 4922 in the Coma cluster. Based on a two-component population model (combining young and old stellar populations), we find that the light of tidal tail predominantly comes from young stars (a few Myr old). The Galaxy Evolution Explorer (GALEX) ultraviolet data played a critical role in the parameter (age and mass) estimation. Our stellar mass estimates of the tidal dwarf galaxy candidates are ~ 10^{6-7} M_sun, typical for dwarf galaxies.

This paper has not been read by Pith yet.

Tidal Dwarf Galaxies around a Post-merger Galaxy, NGC 4922

discussion (0)