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 (TDG) candidates in the post-merger galaxy NGC4922 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 ultraviolet data played a critical role in the parameter (age and mass) estimation. Our stellar mass estimates of the TDG candidates are ∼106-7 M ⊙, typical for dwarf galaxies.
| Original language | English |
|---|---|
| Pages (from-to) | 1911-1916 |
| Number of pages | 6 |
| Journal | Astronomical Journal |
| Volume | 138 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2009 Dec 1 |
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All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science
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Tidal dwarf galaxies around a post-merger galaxy, NGC4922. / 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.
In: Astronomical Journal, Vol. 138, No. 6, 01.12.2009, p. 1911-1916.Research output: Contribution to journal › Article
TY - JOUR
T1 - Tidal dwarf galaxies around a post-merger galaxy, NGC4922
AU - Sheen, Yun Kyeong
AU - Jeong, Hyunjin
AU - Yi, Sukyoung K.
AU - Ferreras, Ignacio
AU - Lotz, Jennifer M.
AU - Olsen, Knut A.G.
AU - Dickinson, Mark
AU - Barnes, Sydney
AU - Park, Jang Hyun
AU - Ree, Chang H.
AU - Madore, Barry F.
AU - Barlow, Tom A.
AU - Conrow, Tim
AU - Foster, Karl
AU - Friendman, Peter G.
AU - Lee, Young Wook
AU - Martin, D. Christopher
AU - Morrissey, Patrick
AU - Neff, Susan G.
AU - Schiminovich, David
AU - Seibert, Mark
AU - Small, Todd
AU - Wyder, Ted K.
PY - 2009/12/1
Y1 - 2009/12/1
N2 - 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 (TDG) candidates in the post-merger galaxy NGC4922 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 ultraviolet data played a critical role in the parameter (age and mass) estimation. Our stellar mass estimates of the TDG candidates are ∼106-7 M ⊙, typical for dwarf galaxies.
AB - 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 (TDG) candidates in the post-merger galaxy NGC4922 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 ultraviolet data played a critical role in the parameter (age and mass) estimation. Our stellar mass estimates of the TDG candidates are ∼106-7 M ⊙, typical for dwarf galaxies.
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U2 - 10.1088/0004-6256/138/6/1911
DO - 10.1088/0004-6256/138/6/1911
M3 - Article
AN - SCOPUS:78149232364
VL - 138
SP - 1911
EP - 1916
JO - Astronomical Journal
JF - Astronomical Journal
SN - 0004-6256
IS - 6
ER -