How rare are extraterrestrial civilizations, and when did they emerge?

Astrophysical Journal

Volumn 511, Issue 1 PART 1, 1999, Pages 429-431

  Livio, Mario ^a  

^a STScI   (United States)

Author keywords

Extraterrestrial intelligence

Indexed keywords

EID: 0033585319     PISSN: 0004637X     EISSN: 15384357     Source Type: Journal    
DOI: 10.1086/306668     Document Type: Article

References (35)

1. Allen, C. W. 1973. Astrophysical Quantities (London: Athlone)
2. Barrow, J. D., & Tipler, F. J. 1986, The Anthropic Cosmological Principle (Oxford : Clarendon)
3. Basri, G., Marcy, G. W., & Graham, J. R. 1996, ApJ, 458, 600
4. Berkner, L. V. 1952, in Proc. Conf. on Ionospheric Physics (Geophys. Res. 12) (Cambridge: Air Force Cambridge Research Center), 13
5. Berkner, L. V., & Marshall, K. C. 1965, J. Atmos. Sci., 22, 225
6. Butler, R. P., & Marcy, G. W. 1996, ApJ, 464, L153
7. Calzetti, D., & Heckman, T. M. 1999, ApJ, submitted
8. Canuto, V. M., Levine, J. S., Augustsson, T. R., Imhoff, C. L., & Giampapa, M. S. 1983, Nature, 305, 281
9. Carlberg, R. G., Morris, S. L., Yee, H. K. C., & Ellingson, E. 1997, ApJ, 479, L19
10. Carruthers, G. R. 1971, ApJ, 166, 349
11. Carter, B. 1983, Philos. Trans. R. Soc. London, A 310, 347
12. Caspersson, T. O. 1950, Cell Growth and Cell Function: A Cytochemical Study (New York: Norton)
13. Cochran, W. D., Hatzes, A., Mary, G. W., & Butler, R. P. 1997, ApJ, 483, 457
14. Davidson, J. N. 1960, The Biochemistry of the Nucleic Acids (New York: Wiley)
15. Deamer, D. W. 1997, Microbiology and Molecular Biology Reviews, 61, 239
16. Garnavich, P. M., et al. 1998, ApJ, 493, L53
17. Hart, M. H. 1978, Icarus, 33, 23
18. Hauser, M. G., et al. 1998, ApJ, 508, 25
19. Kasting, J. F., Whitmore, D. P., & Reynolds, R. T. 1993, Icarus, 101, 108
20. Levine, J. S, Hays, P. B., & Walker, J. C. G. 1979, Icarus, 39, 295
21. Lilly, S. J., Le Fèvre, O., Hammer, F., & Crampton, D. 1996, ApJ, 460, L1é
22. Livio, M., & Kopelman, A. 1990, Nature, 343, 25
23. Madau, P., Ferguson, H. C., Dickinson, M. E., Giavalisco, M., Steidel, C. C., & Fruchter, A. 1996, MNRAS, 283, 1388
24. Madau, P., Pozzetti, L., & Dickinson, M. 1997, ApJ, 498, 106
25. Mayor, M., & Queloz, D. 1995, Nature, 378, 355
26. Perlmutter, S., et al. 1998, Nature, 391, 51
27. Rees, M. 1997, Before the Beginning (Reading: Addison-Wesley)
28. Reiss, A. G., Press, W. H., & Kirshner, R. P. 1996, ApJ, 473, 88
29. Sagan, C. 1961, Radiat. Res., 15, 174
30. Salpeter, E. E. 1955, ApJ, 121, 161
31. Stecker, T. P. 1970, ApJ, 159, 543
32. Watanabe, K., Zelikoff, M., & Inn, E. C. Y. 1958, Adv. Geophys., 5, 153
33. Wood, P. R. 1981, in Physical Processes in Red Giants, ed. I. Iben, Jr., & A. Renzini (Dordrecht: Reidel), 205
34. Yungelson, L., Livio, M., Truran, J. W., Tutukov, A., & Fedorova, A. 1996, ApJ, 466, 890
35. Yungelson, L. R., Tutukov, A. V., & Livio, M. 1993, ApJ, 418, 794