The dark halo of the Milky Way

Science

Volumn 287, Issue 5450, 2000, Pages 74-79

  Alcock, Charles ^a  

^a LAWRENCE LIVERMORE NATIONAL LABORATORY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ASTRONOMY; COSMOS; MATHEMATICAL MODEL; PHYSICS; PRIORITY JOURNAL; REVIEW; ROTATION; VELOCITY;

EID: 0034614669     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.287.5450.74     Document Type: Review

References (48)

1. D. Mihalas and J. Binney, Galactic Astronomy (Freeman, San Francisco, CA, 1981).
2. K. M. Ashman, Publ. Astron. Soc. Pac. 104, 1109 (1992).
3. M. Fich and S. Tremaine, Annu. Rev. Astron. Astrophys. 29, 409 (1991).
4. C. J. Copi, D. N. Schramm, M. S. Turner, Science 267, 192 (1995).
5. M. Persic, P. Salucci, F. Stel, Mon. Not. K. Astron. Soc. 281, 27 (1996).
6. D. Zaritsky, in Proceedings of the Third Stromlo Symposium, B. Gibson, T. Axelrod, M. Putnam, Eds. (Astronomical Society of the Pacific, San Francisco, CA, 1999), pp. 34-45.
7. C. Kochanek, Astrophys. J. 457, 228 (1996).
8. Distances may be determined directly with trigonometry for stars as far away as 1 kpc, where the triangle is created by the orbit of Earth around the sun. Greater distances must be estimated indirectly, often by comparing the brightnesses of classes of stars, some of which are closer than 1 kpc, others of which are in the region of interest.
9. M. Merrifield, Astron J. 103, 1552 (1992).
10. R. Olling and M. Merrifield, Mon. Not. R. Astron. Soc. 297, 943 (1998).
11. W. Jaffe, Mon. Not. R. Astron. Soc. 202, 995 (1983).
12. M. Wilkinson and N. Evans, Mon. Not. R. Astron. Soc. 310, 645 (1999).
13. B. Little and S. Tremaine, Astrophys. J. 320, 493 (1987).
14. B. Carney et al., Astron J. 107, 2240 (1994).
15. F. Kahn and L. Woltjer, Astrophys. J. 130, 705 (1959).
16. P. Sackett and L. Sparke, Astrophys. J. 361, 408 (1990).
17. J. Navarro, C. Frenk, S. White, Astrophys. J. 464, 563 (1996).
18. P. Peebles, Principles of Physical Cosmology (Princeton Univ. Press, Princeton, NJ, 1993);
19. J. Silk, in Proceedings of the Third Stromlo Symposium, B. Gibson, T. Axelrod, M. Putnam, Eds. (Astronomical Society of the Pacific, San Francisco, CA, 1999), pp. 27-33;
20. M. Turner, in Proceedings of the Third Stromlo Symposium, B. Gibson, T. Axelrod, M. Putnam, Eds. (Astronomical Society of the Pacific, San Francisco, CA, 1999), pp. 431-452.
21. S. White et al., Nature 366, 429 (1993).
22. This field has been comprehensively reviewed by B. Sadoulet [Rev. Mod. Phys. 71, 197 (1999)].
23. E. Gates and M. Turner, Phys. Rev. Lett. 72, 2520 (1994).
24. B. Paczynski, Astrophys. J. 304, 1 (1986).
25. _ Annu. Rev. Astron. Astrophys. 34, 419 (1996);
26. E. Roulet and S. Mollerach, Phys. Rep. 279, 67 (1997).
27. C. Alcock et al., Astrophys. J. 486, 697 (1997).
28. N. Palanque-Delabrouille et al., Astron. Astrophys. 332, 1 (1998).
29. A. Udalski et al., Acta Astron. 43, 289 (1993).
30. C. Alard, S. Mao, J. Guibert, Astron. Astrophys. 300, L17 (1996).
31. C. Alcock et al., Astrophys. J. 499, L9 (1998).
32. A. Becker et al., in preparation;
33. C. Alcock et al., in preparation.
34. K. Sahu, Nature 370, 275 (1994).
35. D. Zaritsky and D. Lin, Astron J. 114, 2545 (1998).
36. H.-S. Zhao, in Proceedings of the Third Stromlo Symposium, B. Gibson, T. Axelrod, M. Putnam, Eds. (Astronomical Society of the Pacific, San Francisco, CA, 1999), pp. 125-129.
37. N. Evans et al., Astrophys. J. 501, 45 (1998).
38. A specific proposal is described by C. Stubbs [in Proceedings of the Third Stromlo Symposium, B. Gibson, T. Axelrod, M. Putnam, Eds. (Astronomical Society of the Pacific, San Francisco, CA, 1999), pp. 503-514]. C. Alcock et al., in preparation.
39. A. Becker et al., in preparation; Theoretical investigations of what could be learned from this proposed survey are described by A. Gould [Astrophys. J. 517, 719 (1999)] and by
40. A. Becker et al., in preparation; C. Alcock et al., in preparation. N. Evans and E. Kerins (preprint available at http:// xxx.lanl.gov/abs/astro-ph/9909254).
41. B. Hansen, Nature 394, 860 (1998);
42. Astrophys. J. 520, 680 (1999).
43. R. Ibata et al., Astrophys. J. 524, 95 (1999). R. A. Méndez and D. Minniti (preprint available at http:// xxx.lanl.gov/abs/astro-ph/9908330) have shown that there are 10 similar objects in the Southern HDF.
44. R. Williams et al., Astron J. 112, 1335 (1996).
45. R. Peccei and H. Quinn, Phys. Rev. Lett. 38, 1440 (1977).
46. P. Sikivie Phys. Rev. Lett. 51, 1415 (1983).
47. C. Hagmann et al., Phys. Rev. Lett. 80, 2043 (1998).
48. I thank my colleagues on the MACHO Project for their help and advice. Everything I know in this field has been learned through working with them. I also thank M. Merrifield, B. Sadoulet, and K. van Bibber for supplying figures. Work performed at the Lawrence Livermore National Laboratory is supported by the U.S. Department of Energy under contract W7405-ENC-48.