Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-11-23T20:19:50.360Z Has data issue: false hasContentIssue false
  • English
  • Français

The LMC vs. the Milky Way

Published online by Cambridge University Press:  14 May 2020

Gurtina Besla Open the ORCID record for Gurtina Besla [Opens in a new window]  and
Nicolás Garavito-Camargo
Gurtina Besla
Affiliation:
Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ85721, USA email: [email protected]
Nicolás Garavito-Camargo
Affiliation:
Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ85721, USA email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Recent advancements in astrometry and in cosmological models of dark matter halo growth have significantly changed our understanding of the dynamics of the Local Group. The most dramatic changes owe to a new picture of the structure and dynamics of the Milky Way’s most massive satellite galaxy, the Large Magellanic Cloud (LMC), which is most likely on its first passage about the Milky Way and ten times larger in mass than previously assumed. The LMC’s orbit through the Milky Way’s dark matter and stellar halo will leave characteristic signatures in both density and kinematics. Furthermore, the gravitational perturbations produced by both direct tidal forcing from the LMC and the response of the halo to its passage will together cause significant perturbations to the orbits of tracers of the Milky Way’s dark matter distribution. We advocate for the use of basis field expansion methods to fully capture and quantify these effects.

Keywords

(galaxies:) Magellanic CloudsGalaxy: haloGalaxy: kinematics and dynamicsmethods: numerical(cosmology:) dark matter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S353: Galactic Dynamics in the Era of Large Surveys , June 2019 , pp. 123 - 127
Copyright
© International Astronomical Union 2020

References

Allgood, B., Flores, R. A., Primack, J. R., Kravtsov, A. V., Wechsler, R. H., Faltenbacher, A., & Bullock, J. S. 2006, MNRAS, 367, 1718CrossRefGoogle Scholar
Besla, G., Kallivayalil, N., Hernquist, L., Robertson, B., Cox, T. J., van der Marel, R. P., & Alcock, C., 2007 ApJ, 668, 949CrossRefGoogle Scholar
Besla, G., Kallivayalil, N., Hernquist, L., van der Marel, R. P., Cox, T. J., & Keres, D., 2010 ApJL, 721, L97CrossRefGoogle Scholar
Besla, G. 2015 Lessons from the Local Group: A Conference in honour of David Block and Bruce Elmegreen, ISBN 978-3-319-10613-7. Springer International Publishing Switzerland, p. 311Google Scholar
Besla, G., Martinez-Delgado, D., van der Marel, R. P., Beletsky, Y., Seibert, M., Schafly, E. F., Grebel, E. K., & Neyer, F. 2016 ApJ, 825, 20CrossRefGoogle Scholar
Boylan-Kolchin, M., Besla, G., & Hernquist, L. 2011, MNRAS, 414, 1560CrossRefGoogle Scholar
Colin, P., Avila-Reese, V., & Valenzuela, O. 2000, ApJ, 542, 622CrossRefGoogle Scholar
Erkal, D., + 15 co-authors. 2019, MNRAS, 487, 2, 2685CrossRefGoogle Scholar
Fritz, T. K., Battaglia, G., Pawlowski, M. S., Kallivayalil, N., van der Marel, R., Sohn, T. S., Brook, C., & Besla, G. 2018, A&A, 619, 103Google Scholar
Furlanetto, S. R. & Loeb, A. 2002, ApJ, 565, 854CrossRefGoogle Scholar
Garavito-Camargo, N., Besla, G., Laporte, C. F. P., Johnson, K. V., Gomez, F. A., & Watkins, L. L. 2019, arXiv:1902.05089. [ G19], ApJ, 884, 5110.3847/1538-4357/ab32ebCrossRefGoogle Scholar
Gómez, F. A., Besla, G., Carpintero, D. D., Villalovolo, A., O’Shea, B. W., & Bell, E. F. 2015, ApJ, 802, 128CrossRefGoogle Scholar
Hernquist, L. & Ostriker, J. P. 1992, ApJ, 386, 375CrossRefGoogle Scholar
Kallivayalil, N., van der Marel, R. P., Besla, G., Anderson, J., & Alcock, C. 2013, ApJ, 764, 16110.1088/0004-637X/764/2/161CrossRefGoogle Scholar
Law, D. R. & Majewski, S. R. 2010, ApJ, 714, 22910.1088/0004-637X/714/1/229CrossRefGoogle Scholar
Lowing, B., Jenkins, A., Eke, V., & Frenk, C. 2011, MNRAS, 416, 2697CrossRefGoogle Scholar
Mackey, A. D., Koposov, S. E., Erkal, D., Belokurov, V., Da Costa, G. S., & Gómez, F. A. 2016, MNRAS, 459, 239CrossRefGoogle Scholar
Patel, E., Besla, G., & Sohn, S. T. 2017, MNRAS, 464, 382CrossRefGoogle Scholar
Shipp, N., Li, T. S., Pace, A. B., Erkal, D., Drlica-Wagner, A., Yanny, B., Belokurov, V., Wester, W., Koposov, S. E., Lewis, G. F., Simpson, J. D., Wan, Z., Zucker, D. B., Martell, S. L., & Wang, M. Y. 2019, arXiv:1907.09488Google Scholar
Sohn, S., Watkins, L., Fardal, M., van der Marel, R., Deason, A., Besla, G., & Bellini, A. 2018, ApJ, 862, 52CrossRefGoogle Scholar
Sohn, S. T., van der Marel, R. P., Kallivayalil, N., Majewski, S. R., Besla, G., Carlin, J. L., Law, D. R., Siegel, M. H., & Anderson, J. 2016, ApJ, 833, 235CrossRefGoogle Scholar
van der Marel, R. P., Fardal, M. A., Sohn, S. T., Patel, E., Besla, G., del Pino-Molina, A., Sahlmann, J., & Watkins, L. L. 2019, ApJ, 872, 24CrossRefGoogle Scholar
Vera-Ciro, C. A., Sales, L., Helmi, A., Frenk, C. S., Navarro, J. F., Springel, V., Vogelsberger, M., & White, S. D. M. 2011, MNRAS, 416, 1377CrossRefGoogle Scholar
Vera-Ciro, C. & Helmi, A. 2013, ApJ, 773, 4CrossRefGoogle Scholar
Vogelsberger, M., Zavala, J., & Loeb, A. 2012, MNRAS, 423, 4, 374010.1111/j.1365-2966.2012.21182.xCrossRefGoogle Scholar
Weinberg, M. D. 1998, MNRAS, 299, 499CrossRefGoogle Scholar
Weinberg, M. D. 2000, ApJ, 532, 922CrossRefGoogle Scholar
Xue, X.-X., Rix, H.-W., Ma, Z., et al. 2015, ApJ, 809, 144CrossRefGoogle Scholar
Zivick, P., Kallivayalil, N., van der Marel, R. P., Besla, G., Linden, S. T., Kozlowski, S., Fritz, T. K., Kochanek, C. S., Anderson, J., Sohn, S. T., Geha, M. C., & Alcock, C. R. 2018, ApJ, 864, 5510.3847/1538-4357/aad4b0CrossRefGoogle Scholar
Zivick, P., Kallivayalil, N., Besla, G., Sangmo, T. S., van der Marel, R. P., del Pino, A., Linden, S. T., Fritz, T. K., & Anderson, J. 2019, ApJ, 874, 78CrossRefGoogle Scholar