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Dynamical modelling of galactic disc outskirts

Published online by Cambridge University Press:  21 March 2017

E. Athanassoula
E. Athanassoula*
Affiliation:
Aix Marseille Université, CNRS, LAM (Laboratoire d’Astrophysique de Marseille) UMR 7326, 13388, Marseille, France email: lia@lam.fr
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Abstract

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I review briefly some dynamical models of structures in the outer parts of disc galaxies, including models of polar rings, tidal tails and bridges. I then discuss the density distribution in the outer parts of discs. For this, I compare observations to results of a model in which the disc galaxy is in fact the remnant of a major merger, and find good agreement. This comparison includes radial profiles of the projected surface density and of stellar age, as well as time evolution of the break radius and of the inner and outer disc scale lengths. I also compare the radial projected surface density profiles of dynamically motivated mono-age populations and find that, compared to older populations, younger ones have flatter density profiles in the inner region and steeper in the outer one. The break radius, however, does not vary with stellar age, again in good agreement with observations.

Keywords

galaxies: structuregalaxies: spiralgalaxies: kinematics and dynamicsgalaxies: evolutiongalaxies: interactionsgalaxies: haloesgalaxies: generalgalaxies: photometry
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S321: Formation and Evolution of Galaxy Outskirts , March 2016 , pp. 61 - 68
Copyright
Copyright © International Astronomical Union 2017 

References

Athanassoula, E. 2005, MNRAS, 358, 1477 Google Scholar
Athanassoula, E. & Bosma, A. 1985, ARA&A, 23, 147 Google Scholar
Athanassoula, E., Rodionov, S., Peschken, N., & Lambert, J. C. 2016a, ApJ 821 90 (A16a) CrossRefGoogle Scholar
Athanassoula, E., Rodionov, S., & Peschken, N. 2016b, MNRAS, in prep. (A16b)Google Scholar
Azzolini, R., Trujillo, I., & Beckman, J. E. 2008a, ApJ, 679L, 69 Google Scholar
Azzolini, R., Trujillo, I., & Beckman, J. E. 2008b, ApJ, 684, 1026 Google Scholar
Bakos, J., Trujillo, I., & Pohlen, M. 2008, ApJ, 683, L103 Google Scholar
Barnes, J. E. 1996, Galaxies: Interactions and Induced Star Formation Saas-Fee Advanced Course 26 Lecture Notes, 275Google Scholar
Barnes, J. E. & Hernquist, L. 1992a, ARA&A, 30, 705 Google Scholar
Barnes, J. E. & Hernquist, L. 1992b, Nature, 360, 715 Google Scholar
Barnes, J. E. & Hernquist, L. 1996, ApJ, 471, 115 CrossRefGoogle Scholar
Bekki, K. 1997, ApJ, 490, L37 Google Scholar
Bournaud, F., Combes, F. 2003, A&A, 401, 817 Google Scholar
Bournaud, F., Duc, P. A., & Masset, F. 2003, A&A, 411, L469 Google Scholar
Brook, C. B., Governato, F., Quinn, T., Wadsley, J., Brooks, A., Willman, B., Stilp, A., & Jonsson, P. 2008, ApJ, 689, 678 Google Scholar
Combes, F. & Arnaboldi, M. 1996, A&A, 305, 763 Google Scholar
Comerón, S., Elmegreen, B. G., Salo, H., et al. 2012, ApJ, 759, 98 Google Scholar
Dalcanton, J. J., Spergel, D. N., & Summers, F. J. 1997, ApJ, 482, 659 Google Scholar
de Jong, R. S., Seth, A. C., Bell, E. F., et al. 2007, ApJ, 667, L49 CrossRefGoogle Scholar
Dubinski, J., Mihos, J. C., & Hernquist, L. 1996, ApJ, 462, 576 Google Scholar
Dubinski, J., Mihos, J. C., & Hernquist, L. 1999, ApJ, 526, 607 CrossRefGoogle Scholar
Duc, P. A., Bournaud, F., & Masset, F. 2004, A&A, 427, 803 Google Scholar
Erwin, P., Beckman, J. E., & Pohlen, M. 2005, ApJ, 626, L81 CrossRefGoogle Scholar
Erwin, P., Pohlen, M., & Beckman, J. E. 2008, AJ, 135, 20 Google Scholar
Freeman, K. C. 1970, ApJ, 160, 811 CrossRefGoogle Scholar
Gutierrez, L., Erwin, P., Aladro, R., & Beckman, J. E. 2011, ApJ, 142, 145 Google Scholar
Herpich, J., Stinson, G. S., Dutton, A. A., et al. 2015, MNRAS, 448, 99 Google Scholar
Iodice, E., Arnaboldi, M., Bournaud, F., Combes, F., Sparke, L. S., van Driel, W., & Capaccioli, M. 2003, ApJ, 585, 730 Google Scholar
Kim, J. & Lee, J. 2013, MNRAS, 432, 1701 Google Scholar
Kim, T., et al. 2014, ApJ, 782, 64 Google Scholar
Khoperskov, S. A., Moiseev, A. V., Khoperskov, A. V., & Saburova, A. S. 2014, MNRAS, 441, 2650 Google Scholar
Kormendy, J., Kennicutt, R. C. Jr., 2004, ARA&A, 42, 603 Google Scholar
Laine, J., Laurikainen, E., Salo, H., et al. 2014, MNRAS, 441, 1992 Google Scholar
Macció, A. V., Moore, B., & Stadel, J. 2006, ApJ, 636, L25 Google Scholar
Martig, M., Minchev, I., & Flynn, C. 2014, MNRAS, 442, 2474 Google Scholar
Mo, H. J., Mao, S., & White, S. D. M. 1998, MNRAS, 295, 319 Google Scholar
Muñoz-Mateos, J. C., Boissier, S., Gil de Paz, A., et al. 2011, ApJ, 731, 10 CrossRefGoogle Scholar
Muñoz-Mateos, J. C., Sheth, K., Gil de Paz, A., et al. 2013, ApJ, 771, 59 Google Scholar
Muñoz-Mateos, J.C. 2014, http://www2.lowell.edu/workshops/expdisks2014/presentations/munozmateos_talk.pdf Google Scholar
Perez, I. 2004, A&A, 427, L17 Google Scholar
Peschken, N., Athanassoula, E., & Rodionov, S. 2016, MNRAS, in prep. (P16)Google Scholar
Pohlen, M., Dettmar, R. J., Lütticke, R., & Aronica, G. 2002, A&A, 392, 807 Google Scholar
Pohlen, M. & Trujillo, I. 2006, A&A, 454, 759 Google Scholar
Radburn-Smith, D. J., Roskar, R., Debattista, V. P., et al. 2012, ApJ, 753, 138 Google Scholar
Reshetnikov, V. P., Faúndez-Abans, M., & de Oliveira-Abans, M. 2011, AstL, 37, 171 Google Scholar
Reshetnikov, V. P. & Sotnikova, N. 1997, A&A, 325, 933 Google Scholar
Roediger, J. C., Courteau, S., Sánchez-Blázquez, P., & McDonald, M. 2012, ApJ, 758, 41 CrossRefGoogle Scholar
Roskar, R., Debattista, V. P., Stinson, G. S., et al. 2008, ApJ, 675, L65 Google Scholar
Romero Gomez, M. & Athanassoula, E. 2016, this volume Google Scholar
Ruiz-Lara, T., Perez, I., Florido, E., et al. 2016, MNRAS, 456, L35 Google Scholar
Sackett, P. D. & Sparke, L. S. 1990, ApJ, 361, 408 Google Scholar
Sackett, P. D., Rix, H.-W., Jarvis, B. J., & Freeman, K. C. 1994, ApJ, 436, 629 Google Scholar
Sale, S. E., Drew, J. E., Knigge, C., et al. 2010, MNRAS, 402, 713 Google Scholar
Schweizer, F. 1996, Galaxies: Interactions and Induced Star Formation Saas-Fee Advanced Course 26 Lecture Notes, 105Google Scholar
Sheth, K., Regan, M., Hinz, J. L., et al. 2010, PASP, 122, 1397 CrossRefGoogle Scholar
Snaith, O. N., Gibson, B. K., Brook, C. B., et al. 2012, MNRAS, 425, 1967 Google Scholar
Sparke, L. 2004, ASSL, 312, 273 Google Scholar
Springel, V. & White, S. D. M. 1999, MNRAS, 307, 162 Google Scholar
Struck, C. 1999, Physics Reports, 321, 1 Google Scholar
Toomre, A. & Toomre, J. 1972, ApJ, 178, 623 Google Scholar
Tremaine, S. & Yu, Q. 2000, MNRAS, 319, 1 CrossRefGoogle Scholar
Whitmore, B. C., McElroy, D. B., & Schweizer, F. 1987, AJ, 123, 45 Google Scholar
Whitmore, B. C., Lucas, R. A., McElroy, D. B., Steiman-Cameron, T. Y., Sackett, P. D., & Olling, R. P. 1990, AJ, 100, 1489 Google Scholar