Tidal dwarf galaxies around a post-merger galaxy, NGC4922

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

doi:10.1088/0004-6256/138/6/1911

Tidal dwarf galaxies around a post-merger galaxy, NGC4922

Yun Kyeong Sheen, Hyunjin Jeong, Sukyoung K. Yi, Ignacio Ferreras, Jennifer M. Lotz, Knut A.G. Olsen, Mark Dickinson, Sydney Barnes, 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 SchiminovichMark Seibert, Todd Small, Ted K. Wyder

Research output: Contribution to journal › Article

11 Citations (Scopus)

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 ∼10^6-7 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	https://doi.org/10.1088/0004-6256/138/6/1911
Publication status	Published - 2009 Dec 1

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All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Cite this

Sheen, Y. K., Jeong, H., Yi, S. K., Ferreras, I., Lotz, J. M., Olsen, K. A. G., Dickinson, M., Barnes, S., Park, J. H., Ree, C. H., Madore, B. F., Barlow, T. A., Conrow, T., Foster, K., Friendman, P. G., Lee, Y. W., Martin, D. C., Morrissey, P., Neff, S. G., ... Wyder, T. K. (2009). Tidal dwarf galaxies around a post-merger galaxy, NGC4922. Astronomical Journal, 138(6), 1911-1916. https://doi.org/10.1088/0004-6256/138/6/1911

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. / Tidal dwarf galaxies around a post-merger galaxy, NGC4922. In: Astronomical Journal. 2009 ; Vol. 138, No. 6. pp. 1911-1916.

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title = "Tidal dwarf galaxies around a post-merger galaxy, NGC4922",

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.",

author = "Sheen, {Yun Kyeong} and Hyunjin Jeong and Yi, {Sukyoung K.} and Ignacio Ferreras and Lotz, {Jennifer M.} and Olsen, {Knut A.G.} and Mark Dickinson and Sydney Barnes and Park, {Jang Hyun} and Ree, {Chang H.} and Madore, {Barry F.} and Barlow, {Tom A.} and Tim Conrow and Karl Foster and Friendman, {Peter G.} and Lee, {Young Wook} and Martin, {D. Christopher} and Patrick Morrissey and Neff, {Susan G.} and David Schiminovich and Mark Seibert and Todd Small and Wyder, {Ted K.}",

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doi = "10.1088/0004-6256/138/6/1911",

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Sheen, YK, Jeong, H, Yi, SK, Ferreras, I, Lotz, JM, Olsen, KAG, Dickinson, M, Barnes, S, Park, JH, Ree, CH, Madore, BF, Barlow, TA, Conrow, T, Foster, K, Friendman, PG, Lee, YW, Martin, DC, Morrissey, P, Neff, SG, Schiminovich, D, Seibert, M, Small, T & Wyder, TK 2009, 'Tidal dwarf galaxies around a post-merger galaxy, NGC4922', Astronomical Journal, vol. 138, no. 6, pp. 1911-1916. https://doi.org/10.1088/0004-6256/138/6/1911

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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EP - 1916

JO - Astronomical Journal

JF - Astronomical Journal

SN - 0004-6256

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10.1088/0004-6256/138/6/1911