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Substructure in the Galactic Halo

Published online by Cambridge University Press:  05 March 2013

Steven R. Majewski
Steven R. Majewski*
Affiliation:
Department of Astronomy, University of Virginia, Charlottesville, VA 22903-0818, USA
*
2E-mail: [email protected]
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Abstract

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Giant stars make particularly useful tracer stars for halo substructure because they are very bright and very common. I discuss several projects that use giant-star tracers to search the Galactic halo for tidal debris from known Galactic satellites, including that from the Sagittarius dwarf galaxy, and to search for tidal debris features from former, now destroyed satellites. Several cross-sections of the halo reveal it to be networked with extended, coherent substructures, indicating that it is likely to be predominantly made up of accreted satellites.

Keywords

Galaxy: kinematics and dynamicsGalaxy: structureGalaxy: halo
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 21 , Issue 2: The Fifth Workshop on Galactic Chemodynamics , 2004 , pp. 197 - 202
Copyright
Copyright © Astronomical Society of Australia 2004

References

Bessell, M. S., & Brett, J. M. 1988, PASP, 100, 1134 CrossRefGoogle Scholar
Crane, J. D., Majewski, S. R., Rocha-Pinto, H. J., Frinchaboy, P. M., Skrutskie, M. F., & Law, D. R. 2003, ApJ, 594, L119 CrossRefGoogle Scholar
Eggen, O. J., Lynden-Bell, D., & Sandage, A. R. 1962, ApJ, 136, 748 CrossRefGoogle Scholar
Frinchaboy, P. M., Majewski, S. R., Crane, J. D., Reid, I. N., Rocha-Pinto, H. J., Phelps, R. L., Patterson, R. J., & Muñoz, R. R. 2004, ApJ, 602, L21 CrossRefGoogle Scholar
Helmi, A., Navarro, J. F., Meza, A., Steinmetz, M., & Eke, V. R. 2003, ApJ, 592, L25 CrossRefGoogle Scholar
Ibata, R. A., Gilmore, G., & Irwin, M. J. 1994, Natur, 370, 194 CrossRefGoogle Scholar
Ibata, R. A., Irwin, M. J., Lewis, G. F., Ferguson, A. M. N., & Tanvir, N. 2003, MNRAS, 340, L21 CrossRefGoogle Scholar
Irwin, M., & Hatzidimitriou, D. 1995, MNRAS, 277, 1354 CrossRefGoogle Scholar
Johnston, K. V., Choi, P. I., & Guhathakurta, P. 2002, AJ, 124, 310 CrossRefGoogle Scholar
Johnston, K. V., Sigurdsson, S., & Hernquist, L. 1999, MNRAS, 302, 771 CrossRefGoogle Scholar
Kauffmann, G., White, S. D. M., & Guiderdoni, B. 1993, MNRAS, 264, 201 CrossRefGoogle Scholar
King, I. R. 1962, AJ, 67, 471 CrossRefGoogle Scholar
Klypin, A., Kravtsov, A. V., Valenzuela, O., & Prada, F. 1999, ApJ, 522, 82 CrossRefGoogle Scholar
Kuhn, J. R., Smith, H. A., & Hawley, S. L. 1996, ApJ, 469, L93 Google Scholar
Kundu, A., et al. 2002, ApJ, 576, L125 CrossRefGoogle Scholar
Law, D. R., Johnston, K. V., & Majewski, S. R. 2004, ApJ, submittedGoogle Scholar
Law, D. R., Majewski, S. R., Skrutskie, M. F., & Johnston, K. V. 2003, in ASP Conf. Ser., Tidal Tails and Galactic Satellites, eds. D. Martinez-Delgado, & F. Prada (San Francisco: ASP), in press (astro-ph/0309567)Google Scholar
Layden, A., & Sarajedini, A. 2000, AJ, 119, 1760 CrossRefGoogle Scholar
Maddison, S. T., Kawata, D., & Gibson, B. K. 2002, Ap&SS, 281, 421 Google Scholar
Majewski, S. R. 2003, in ASP Conf. Ser. 296, New Horizons in Globular Cluster Astronomy, eds. G. Piotto, G. Meylan, S. G. Djorgovski, & M. Riello (San Francisco: ASP), 447 Google Scholar
Majewski, S. R. 2004, in ASP Conf. Ser., Milky Way Surveys: The Structure and Evolution of our Galaxy, eds. D. Clemens, T. Brainerd, & R. Shah (San Francisco: ASP), in pressGoogle Scholar
Majewski, S. R., Munn, J. A., & Hawley, S. L. 1996, ApJ, 459, L73 CrossRefGoogle Scholar
Majewski, S. R., Ostheimer, J. C., Kunkel, W. E., & Patterson, R. J. 2000a, AJ, 120, 2550 CrossRefGoogle Scholar
Majewski, S. R., Ostheimer, J. C., Patterson, R. J., Kunkel, W. E., Johnston, K. V., & Geisler, D. 2000b, AJ, 119, 760 CrossRefGoogle Scholar
Majewski, S. R., et al. 2004, AJ, in pressGoogle Scholar
Majewski, S. R., Law, D. R., Johnston, K. V., Skrutskie, M. F., & Weinberg, M. D. 2003a, in ASP Conf. Ser., IAU Symp. 220: Dark Matter in Galaxies, eds. S. Ryder, D. J. Pisano, M. Walker, & K. Freeman (San Francisco: ASP), in pressGoogle Scholar
Majewski, S. R., Skrutskie, M. F., Weinberg, M. D., & Ostheimer, J. C. 2003b, ApJ, 599, 1082 (MSWO)CrossRefGoogle Scholar
Mayer, L., Moore, B., Quinn, T., Governato, F., & Stadel, J. 2002, MNRAS, 336, 119 CrossRefGoogle Scholar
Moore, B., Ghigna, S., Governato, F., Lake, G., Quinn, T., Stadel, J., & Tozzi, P. 1999, ApJ, 524, L19 CrossRefGoogle Scholar
Morrison, H. L., Olszewski, E. W., Mateo, M., Norris, J. E., Harding, P., Dohm-Palmer, R. C., & Freeman, K. C. 2001, AJ, 121, 283 CrossRefGoogle Scholar
Navarro, J. F., Frenk, C. S., & White, S. D. M. 1997, ApJ, 490, 493 CrossRefGoogle Scholar
Newberg, H. J., et al. 2002, ApJ, 569, 245 CrossRefGoogle Scholar
Putman, M. E., et al. 1998, Natur, 394, 752 CrossRefGoogle Scholar
Rocha-Pinto, H. J., Majewski, S. R., Skrutskie, M. F., & Crane, J. D. 2003, ApJ, 594, L115 CrossRefGoogle Scholar
Searle, L., & Zinn, R. 1978, ApJ, 225, 357 CrossRefGoogle Scholar
Sparke, L. S. 2002, in The Shapes of Galaxies and Their Dark Halos, ed. P. Natarajan (Singapore: World Scientific), 178 CrossRefGoogle Scholar
Walcher, C. J., Fried, J. W., Burkert, A., & Klessen, R. S. 2003, A&A, 406, 847 Google Scholar
Yanny, B., et al. 2003, ApJ, 588, 824 CrossRefGoogle Scholar