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Author Sheen, Yun-Kyeong ♦ Jeong, Hyunjin ♦ Yi, Sukyoung K. ♦ Ferreras, Ignacio ♦ Lotz, Jennifer M. ♦ Olsen, Knut A. G. ♦ Dickinson, Mark ♦ Barnes, Sydney ♦ Park, Jang-Hyun ♦ Ree, Chang H. ♦ Madore, Barry F. ♦ Barlow, Tom A. ♦ Conrow, Tim ♦ Foster, Karl ♦ Friendman, Peter G. ♦ Lee, Young-Wook ♦ Martin, D. Christopher ♦ Morrissey, Patrick ♦ Neff, Susan G. ♦ Schiminovich, David ♦ Seibert, Mark ♦ Small, Todd ♦ Wyder, Ted K.
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 2009-10-13
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Astronomy & allied sciences ♦ Physics
Subject Keyword Astrophysics - Cosmology and Nongalactic Astrophysics ♦ Astrophysics - Astrophysics of Galaxies ♦ physics:astro-ph
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.
Description Reference: Astron.J.138:1911-1916,2009
Educational Use Research
Learning Resource Type Article
Page Count 10


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