The Quest RR Lyrae Survey: Confirmation of the clump at 50 kiloparsecs and other overdensities in the outer halo

Astrophysical Journal

Volumn 554, Issue 1 PART 2, 2001, Pages

  Vivas, A K ^a   Zinn, R ^a   Andrews, P ^b   Bailyn, C ^a   Baltay, C ^b   Coppi, P ^a,b   Ellman, N ^b   Girard, T ^a   Rabinowitz, D ^b   Schaefer, B ^c   Shin, J ^b   Snyder, J ^a,b   Sofia, S ^a   Van Altena, W ^a   Abad, C ^d   Bongiovanni, A ^d   Briceno C ^d   Bruzual, G ^d   Della Prugna, F ^d   Herrera, D ^d   Magris, G ^d   Mateu, J ^d   Pacheco, R ^d   Sanchez Ge ^d   Sanchez Gu ^d   Schenner, H ^d   Stock, J ^d   Vicente, B ^d   Vieira, K ^d   Ferrin I ^e   Hernandez, J ^e   Gebhard, M ^f   Honeycutt, R ^f   Mufson, S ^f   Musser, J ^f   Rengstorf, A ^f   more..

^a YALE UNIVERSITY   (United States)

^b Yale University   (United States)

^c UNIVERSITY OF TEXAS AT AUSTIN   (United States)

^d CENTRO DE INVESTIGACIONES DE ASTRONOMÍA   (Venezuela)

^e UNIVERSIDAD DE LOS ANDES   (Venezuela)

^f INDIANA UNIVERSITY   (United States)

Author keywords

Galaxies: Individual (Sagittarius); Galaxy: Halo; Galaxy: Structure; Stars: variables: other

Indexed keywords

EID: 18044383981     PISSN: 0004637X     EISSN: 15384357     Source Type: Journal    
DOI: 10.1086/320915     Document Type: Article

References (27)

1. Bland-Hawthorn, J., & Freeman, K. 2000, Science, 287, 79
2. Demarque, P., Zinn, R., Lee, Y., & Yi, S. 2000, AJ, 119, 1398
3. Eggen, O. J. 1979, ApJ, 229, 158
4. _. 1996, AJ, 112, 2661
5. Helmi, A., & White, S. D. M. 1999, MNRAS, 307, 495
6. _. 2001, MNRAS, 323, 529
7. Helmi, A., White, S. D. M., de Zeeuw, P. T., & Zhao, H. 1999, Nature, 402, 53
8. Ibata, R. A., Gilmore, G., & Irwin, M. J. 1994, Nature, 370, 194
9. Ibata, R. A., Irwin, M., Lewis, G., & Stolte, A. 2001a, ApJ, in press
10. Ibata, R. A., Lewis, G., Irwin, M., Totten, E., & Quinn, T. 2001b, ApJ, 551, 294
11. Ivezic, Z., et al. 2000, AJ, 120, 963
12. Johnston, K. V. 1998, ApJ, 495, 297
13. Majewski, S. R., Munn, J. A., & Hawley, S. L. 1994, ApJ, 427, L37
14. Martinez-Delgado, D., Aparicio, A., Gomez-Flechoso, M. A., & Carrera, R. 2001, ApJ, 549, L199
15. Mateo, M. 1996, in ASP Conf. Ser. 92, Formation of the Galactic Halo...Inside and Out, ed. H. L. Morrison & A. Sarajedini (San Francisco: ASP), 434
16. _. 1998, ARA&A, 36, 435
17. Mateo, M., Mirabal, N., Udalski, A., Szymanski, M., Kaluzny, J., Kubiak, M., Krzeminski, W., & Stanek, K. Z. 1996, ApJ, 458, L13
18. Morrison, H. L., Mateo, M., Olszewski, E. W., Harding, P., Dohm-Palmer, R. C., Freeman, K. C., Norris, J. E., & Morita, M. 2000, AJ, 119, 2254
19. Odenkirchen, M., et al. 2001, ApJ, 548, L165
20. Saha, A. 1985, ApJ, 289, 310
21. Saha, A., & Hoessel, J. G. 1990, AJ, 99, 97
22. Sandage, A. 1990, ApJ, 350, 603
23. Sawyer Hogg, H. 1973, Third Catalogue of Variable Stars in Globular Clusters (Toronto: David Dunlap Obs., Univ. Toronto)
24. Schlegel, D. J., Finkbeiner, D. P., & Davis, M. 1998, ApJ, 500, 525
25. Snyder, J. 1998, Proc. SPIE, 3355, 635
26. Wetterer, C. J., & McGraw, J. T. 1996, AJ, 112, 1046
27. Yanny, B., et al. 2000, ApJ, 540, 825