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2011

Could M31 be the result of a major merger?

Fouquet, Sylvain, Hammer, François, Yang, Yang-Bin et al.

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We investigated a scenario in which M31 could be the remnant of a gas-rich major merger.

Galaxy merger simulations, highly constrained by observations, were run using GADGET 2 in order to reproduce M31.
We succeeded in reproducing the global shape of M31, the thin disk and the bulge, and in addition some of the main M31 large-scale features, such as the thick disk, the 10kpc ring and the Giant Stream.
This lead to a new explanation of the Giant Stream which could be caused by tidal tail stars that have been captured by the galaxy potential.

Could M31 be the result of a major merger? · Around

Built on

Ferguson, A. M. N., Johnson, R. A., Faria, D. C., Irwin, M. J., Ibata, R. A., Johnston, K. V., Lewis, G. F., & Tanvir, N. R., ApJ
2005
Earlier work this paper cites.
Springel, V., MNRAS
2005
Earlier work this paper cites.
van den Bergh, S. 2005, The Local Group as an Astrophysical Laboratory
2005
Earlier work this paper cites.
Brown, T. M., Smith, E., Ferguson, H. C., et al., ApJ
2007
Earlier work this paper cites.

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Then

Hopkins, P. F., Hernquist, L., Cox, T. J., Younger, J. D., & Besla, G., ApJ
2008
Later among the works it cites.
Hopkins, P. F., Cox, T. J., Younger, J. D., & Hernquist, L., ApJ
2009
Later among the works it cites.
Hammer, F., Yang, Y. B., Wang, J. L., Puech, M., Flores, H., & Fouquet, S. ApJ
2010
Later among the works it cites.
Kormendy, J., Drory, N., Bender, R., & Cornell, M. E. ApJ
2010
Later among the works it cites.

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