Simulations of binary galaxy mergers and the link with fast rotators, slow rotators, and kinematically distinct cores

Maxime Bois; Eric Emsellem; Frédéric Bournaud; Katherine Alatalo; Leo Blitz; Martin Bureau; Michele Cappellari; Roger L. Davies; Timothy A. Davis; P. T. de Zeeuw; Pierre-Alain Duc; Sadegh Khochfar; Davor Krajnović; Harald Kuntschner; Pierre-Yves Lablanche; Richard M. McDermid; Raffaella Morganti; Thorsten Naab; Tom Oosterloo; Marc Sarzi; Nicholas Scott; Paolo Serra; Anne-Marie Weijmans; Lisa M. Young

Simulations of binary galaxy mergers and the link with fast rotators, slow rotators, and kinematically distinct cores

Maxime Bois^*, Eric Emsellem, Frédéric Bournaud, Katherine Alatalo, Leo Blitz, Martin Bureau, Michele Cappellari, Roger L. Davies, Timothy A. Davis, P. T. de Zeeuw, Pierre-Alain Duc, Sadegh Khochfar, Davor Krajnović, Harald Kuntschner, Pierre-Yves Lablanche, Richard M. McDermid, Raffaella Morganti, Thorsten Naab, Tom Oosterloo, Marc SarziNicholas Scott, Paolo Serra, Anne-Marie Weijmans, Lisa M. Young

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution

Abstract

We study the formation of early-type galaxies (ETGs) through mergers with a sample of 70 high-resolution numerical simulations of binary mergers of disc galaxies. These simulations encompass various mass ratios, initial conditions and orbital parameters. We find that binary mergers of disc galaxies with mass ratios of 3:1 and 6:1 are nearly always classified as Fast Rotators according to the ATLAS(3D) criterion: they preserve the structure of the input fast rotating spiral progenitors. Major disc mergers (mass ratios of 2:1 and 1:1) lead to both Fast and Slow Rotators. Most of the Slow Rotators hold a stellar Kinematically Distinct Core (KDC) in their 1-3 central kilo-parsec: these KDCs are built from the stellar components of the progenitors. The mass ratio of the progenitors is a fundamental parameter for the formation of Slow Rotators in binary mergers, but it also requires a retrograde spin for the progenitor galaxies with respect to the orbital angular momentum. The importance of the initial spin of the progenitors is also investigated in the library of galaxy mergers of the GalMer project.

Original language	English
Title of host publication	Galaxy mergers in an evolving universe
Subtitle of host publication	proceedings of a conference held at Farglory Hotel, Hualien, Taiwan 23–28 October 2011
Editors	Wei-Hsin Sun, C. Kevin Xu, Nick Z. Scoville, David B. Sanders
Place of Publication	San Francisco
Publisher	Astronomical Society of the Pacific
Pages	97-100
Number of pages	4
ISBN (Electronic)	9781583818398
ISBN (Print)	9781583818381
Publication status	Published - 2013
Externally published	Yes
Event	International Conference on Galaxy Mergers in an Evolving Universe - Hualien Duration: 23 Oct 2011 → 28 Oct 2011

Publication series

Name	Astronomical Society of the Pacific Conference Series
Publisher	Astronomical Society of the Pacific
Volume	477

Conference

Conference	International Conference on Galaxy Mergers in an Evolving Universe
City	Hualien
Period	23/10/11 → 28/10/11

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http://www.aspbooks.org/a/volumes/article_details/?paper_id=35801

Cite this

Bois, M., Emsellem, E., Bournaud, F., Alatalo, K., Blitz, L., Bureau, M., Cappellari, M., Davies, R. L., Davis, T. A., de Zeeuw, P. T., Duc, P-A., Khochfar, S., Krajnović, D., Kuntschner, H., Lablanche, P-Y., McDermid, R. M., Morganti, R., Naab, T., Oosterloo, T., ... Young, L. M. (2013). Simulations of binary galaxy mergers and the link with fast rotators, slow rotators, and kinematically distinct cores. In W-H. Sun, C. K. Xu, N. Z. Scoville, & D. B. Sanders (Eds.), Galaxy mergers in an evolving universe: proceedings of a conference held at Farglory Hotel, Hualien, Taiwan 23–28 October 2011 (pp. 97-100). (Astronomical Society of the Pacific Conference Series; Vol. 477). Astronomical Society of the Pacific. http://www.aspbooks.org/a/volumes/article_details/?paper_id=35801

Bois, Maxime ; Emsellem, Eric ; Bournaud, Frédéric et al. / Simulations of binary galaxy mergers and the link with fast rotators, slow rotators, and kinematically distinct cores. Galaxy mergers in an evolving universe: proceedings of a conference held at Farglory Hotel, Hualien, Taiwan 23–28 October 2011. editor / Wei-Hsin Sun ; C. Kevin Xu ; Nick Z. Scoville ; David B. Sanders. San Francisco : Astronomical Society of the Pacific, 2013. pp. 97-100 (Astronomical Society of the Pacific Conference Series).

@inproceedings{c616ec7026fc47ba972f3ff09560d1ad,

title = "Simulations of binary galaxy mergers and the link with fast rotators, slow rotators, and kinematically distinct cores",

abstract = "We study the formation of early-type galaxies (ETGs) through mergers with a sample of 70 high-resolution numerical simulations of binary mergers of disc galaxies. These simulations encompass various mass ratios, initial conditions and orbital parameters. We find that binary mergers of disc galaxies with mass ratios of 3:1 and 6:1 are nearly always classified as Fast Rotators according to the ATLAS(3D) criterion: they preserve the structure of the input fast rotating spiral progenitors. Major disc mergers (mass ratios of 2:1 and 1:1) lead to both Fast and Slow Rotators. Most of the Slow Rotators hold a stellar Kinematically Distinct Core (KDC) in their 1-3 central kilo-parsec: these KDCs are built from the stellar components of the progenitors. The mass ratio of the progenitors is a fundamental parameter for the formation of Slow Rotators in binary mergers, but it also requires a retrograde spin for the progenitor galaxies with respect to the orbital angular momentum. The importance of the initial spin of the progenitors is also investigated in the library of galaxy mergers of the GalMer project.",

author = "Maxime Bois and Eric Emsellem and Fr{\'e}d{\'e}ric Bournaud and Katherine Alatalo and Leo Blitz and Martin Bureau and Michele Cappellari and Davies, {Roger L.} and Davis, {Timothy A.} and {de Zeeuw}, {P. T.} and Pierre-Alain Duc and Sadegh Khochfar and Davor Krajnovi{\'c} and Harald Kuntschner and Pierre-Yves Lablanche and McDermid, {Richard M.} and Raffaella Morganti and Thorsten Naab and Tom Oosterloo and Marc Sarzi and Nicholas Scott and Paolo Serra and Anne-Marie Weijmans and Young, {Lisa M.}",

year = "2013",

language = "English",

isbn = "9781583818381",

series = "Astronomical Society of the Pacific Conference Series",

publisher = "Astronomical Society of the Pacific",

pages = "97--100",

editor = "Wei-Hsin Sun and Xu, {C. Kevin} and Scoville, {Nick Z.} and Sanders, {David B.}",

booktitle = "Galaxy mergers in an evolving universe",

note = "International Conference on Galaxy Mergers in an Evolving Universe ; Conference date: 23-10-2011 Through 28-10-2011",

}

Bois, M, Emsellem, E, Bournaud, F, Alatalo, K, Blitz, L, Bureau, M, Cappellari, M, Davies, RL, Davis, TA, de Zeeuw, PT, Duc, P-A, Khochfar, S, Krajnović, D, Kuntschner, H, Lablanche, P-Y, McDermid, RM, Morganti, R, Naab, T, Oosterloo, T, Sarzi, M, Scott, N, Serra, P, Weijmans, A-M & Young, LM 2013, Simulations of binary galaxy mergers and the link with fast rotators, slow rotators, and kinematically distinct cores. in W-H Sun, CK Xu, NZ Scoville & DB Sanders (eds), Galaxy mergers in an evolving universe: proceedings of a conference held at Farglory Hotel, Hualien, Taiwan 23–28 October 2011. Astronomical Society of the Pacific Conference Series, vol. 477, Astronomical Society of the Pacific, San Francisco, pp. 97-100, International Conference on Galaxy Mergers in an Evolving Universe, Hualien, 23/10/11. <http://www.aspbooks.org/a/volumes/article_details/?paper_id=35801>

Simulations of binary galaxy mergers and the link with fast rotators, slow rotators, and kinematically distinct cores. / Bois, Maxime; Emsellem, Eric; Bournaud, Frédéric et al.
Galaxy mergers in an evolving universe: proceedings of a conference held at Farglory Hotel, Hualien, Taiwan 23–28 October 2011. ed. / Wei-Hsin Sun; C. Kevin Xu; Nick Z. Scoville; David B. Sanders. San Francisco: Astronomical Society of the Pacific, 2013. p. 97-100 (Astronomical Society of the Pacific Conference Series; Vol. 477).

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution

TY - GEN

T1 - Simulations of binary galaxy mergers and the link with fast rotators, slow rotators, and kinematically distinct cores

AU - Bois, Maxime

AU - Emsellem, Eric

AU - Bournaud, Frédéric

AU - Alatalo, Katherine

AU - Blitz, Leo

AU - Bureau, Martin

AU - Cappellari, Michele

AU - Davies, Roger L.

AU - Davis, Timothy A.

AU - de Zeeuw, P. T.

AU - Duc, Pierre-Alain

AU - Khochfar, Sadegh

AU - Krajnović, Davor

AU - Kuntschner, Harald

AU - Lablanche, Pierre-Yves

AU - McDermid, Richard M.

AU - Morganti, Raffaella

AU - Naab, Thorsten

AU - Oosterloo, Tom

AU - Sarzi, Marc

AU - Scott, Nicholas

AU - Serra, Paolo

AU - Weijmans, Anne-Marie

AU - Young, Lisa M.

PY - 2013

Y1 - 2013

N2 - We study the formation of early-type galaxies (ETGs) through mergers with a sample of 70 high-resolution numerical simulations of binary mergers of disc galaxies. These simulations encompass various mass ratios, initial conditions and orbital parameters. We find that binary mergers of disc galaxies with mass ratios of 3:1 and 6:1 are nearly always classified as Fast Rotators according to the ATLAS(3D) criterion: they preserve the structure of the input fast rotating spiral progenitors. Major disc mergers (mass ratios of 2:1 and 1:1) lead to both Fast and Slow Rotators. Most of the Slow Rotators hold a stellar Kinematically Distinct Core (KDC) in their 1-3 central kilo-parsec: these KDCs are built from the stellar components of the progenitors. The mass ratio of the progenitors is a fundamental parameter for the formation of Slow Rotators in binary mergers, but it also requires a retrograde spin for the progenitor galaxies with respect to the orbital angular momentum. The importance of the initial spin of the progenitors is also investigated in the library of galaxy mergers of the GalMer project.

AB - We study the formation of early-type galaxies (ETGs) through mergers with a sample of 70 high-resolution numerical simulations of binary mergers of disc galaxies. These simulations encompass various mass ratios, initial conditions and orbital parameters. We find that binary mergers of disc galaxies with mass ratios of 3:1 and 6:1 are nearly always classified as Fast Rotators according to the ATLAS(3D) criterion: they preserve the structure of the input fast rotating spiral progenitors. Major disc mergers (mass ratios of 2:1 and 1:1) lead to both Fast and Slow Rotators. Most of the Slow Rotators hold a stellar Kinematically Distinct Core (KDC) in their 1-3 central kilo-parsec: these KDCs are built from the stellar components of the progenitors. The mass ratio of the progenitors is a fundamental parameter for the formation of Slow Rotators in binary mergers, but it also requires a retrograde spin for the progenitor galaxies with respect to the orbital angular momentum. The importance of the initial spin of the progenitors is also investigated in the library of galaxy mergers of the GalMer project.

M3 - Conference proceeding contribution

SN - 9781583818381

T3 - Astronomical Society of the Pacific Conference Series

SP - 97

EP - 100

BT - Galaxy mergers in an evolving universe

A2 - Sun, Wei-Hsin

A2 - Xu, C. Kevin

A2 - Scoville, Nick Z.

A2 - Sanders, David B.

PB - Astronomical Society of the Pacific

CY - San Francisco

T2 - International Conference on Galaxy Mergers in an Evolving Universe

Y2 - 23 October 2011 through 28 October 2011

ER -

Bois M, Emsellem E, Bournaud F, Alatalo K, Blitz L, Bureau M et al. Simulations of binary galaxy mergers and the link with fast rotators, slow rotators, and kinematically distinct cores. In Sun W-H, Xu CK, Scoville NZ, Sanders DB, editors, Galaxy mergers in an evolving universe: proceedings of a conference held at Farglory Hotel, Hualien, Taiwan 23–28 October 2011. San Francisco: Astronomical Society of the Pacific. 2013. p. 97-100. (Astronomical Society of the Pacific Conference Series).

Simulations of binary galaxy mergers and the link with fast rotators, slow rotators, and kinematically distinct cores

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