Long-term optical variability of radio-selected quasars from the first survey

Astronomical Journal

Volumn 121, Issue 4, 2001, Pages 1872-1885

  Helfand, David J ^a   Stone, Remington P S ^b   Willman, Beth ^c   White, Richard L ^d   Becker, Robert H ^e   Price, Trevor ^e   Gregg, Michael D ^e   McMahon, Richard G ^f  

^a Och Spine at New York Presbyterian Hospitals   (United States)

^b University of California Santa Cruz   (United States)

^c UNIVERSITY OF WASHINGTON   (United States)

^d STScI   (United States)

^e UNIVERSITY OF CALIFORNIA   (United States)

^f UNIVERSITY OF CAMBRIDGE   (United Kingdom)

Author keywords

Methods: statistical; Quasars: general; Surveys

Indexed keywords

EID: 0040885588     PISSN: 00046256     EISSN: None     Source Type: Journal    
DOI: 10.1086/319971     Document Type: Article

References (32)

1. Barbieri, C., Romano, G., diSerego, S., & Zambon, M. 1977, A&A, 59, 419
2. Becker, R. H., White, R. L., & Helfand, D. J. 1995, ApJ, 450, 559
3. Becker, R. H., et al. 2001, ApJ, submitted
4. Ciamati, A., Zamorani, G., & Marano, B. 1993, MNRAS, 263, 236
5. Condon, J. J., Cotton, W. D., Greisen, E. W., Yin, Q. F., Perley, R. A., Taylor, G. B., & Broderick, J. J. 1998, AJ, 115, 1693
6. Cristiani, S., Trentini, S., LaFranca, F., & Andreani, P. 1997, A&A, 321, 123
7. Cristiani, S., Trentini, S., LaFranca, F., Aretxaga, I., Andreani, P., Vio, R., & Gemmo, A. 1996, A&A, 306, 395
8. Cristiani, S., Vio, R., & Andreani, P. 1990, AJ, 100, 56
9. Fernandes, R. C., Aretxaga, I., & Terlevich, R. 1996, MNRAS, 282, 1191
10. Garcia, A., Sodre, L., Jablonski, F. J., & Terlevich, R. J. 1999, MNRAS, 309, 803
11. Giallongo, E., Trevese, D., & Vagnetti, F. 1991, ApJ, 377, 345
12. Giveon, U., Maoz, D., Kaspi, S., Netzer, H., & Smith, P. S. 1999, MNRAS, 306, 637
13. Grandi, S. A., & Tifft, W. G. 1974, PASP, 86, 873
14. Gregg, M. D., Becker, R. H., White, R. L., Helfand, D. J., McMahon, R. G., & Hook, I. M. 1996, AJ, 112, 407
15. Hawkins, M. R. S. 1996, MNRAS, 278, 787
16. Hook, I. M., McMahon, R. G., Boyle, B. J., & Irwin, M. J. 1994, MNRAS, 268, 305
17. La Franca, F., & Cristiani, S. 1997, AJ, 113, 1517
18. Landolt, A. U. 1992, PASP, 104, 336
19. Malmquist, K. G. 1924, Medd. Lund Astron. Obs., 2(32), 64
20. McMahon, R. H., & Irwin, M. 1992, in Digitized Optical Sky Surveys, ed. H. T. MacGillivray & E. B. Thomson (Dordrecht: Kluwer), 417
21. McMahon, R. G., White, R. L., Helfand, D. J., & Decker, R. H. 2001, ApJ, submitted
22. Miller, H. R., & Wiita, P. J. 1991, Variability of Active Galactic Nuclei (Cambridge: Cambridge Univ. Press)
23. Netzer, H., & Sheffar, Y. 1983, MNRAS, 203, 935
24. Netzer, H., et al. 1996, MNRAS, 279, 429
25. Sirola, C. J., et al. 1998, ApJ, 495, 659
26. Smith, A. G., Nair, A. D., Leacock, R. J., & Clements, S. D. 1993, AJ, 105, 437
27. Stocke, J. T., et al. 1991, ApJS, 76, 813
28. Trevese, D., Bunone, A., Nanni, D., Bershady, M. A., & Kron, R. G. 1997, Mem. Soc. Astron. Italiana, 68, 251
29. Trevese, D., Kron, R. G., Majewski, S. R., Bershady, M. A., & Koo, D. C. 1994, ApJ, 433, 494
30. White, R. L., Becker, R. H., Helfand, D. J., & Gregg, M. D. 1997, ApJ, 475, 479
31. White, R. L., et al. 2000, ApJS, 126, 133
32. Winkler, H., Glass, I. S., van Wyk, F., Marang, F., Jones, J. H. S., Buckley, D. A. H., & Sekiguchi, K. 1992, MNRAS, 257, 659