X-ray emission from radio-quiet quasars in the Sloan Digital Sky Survey Early Data Release: The αOX dependence upon ultraviolet luminosity

Astronomical Journal

Volumn 125, Issue 2 1766, 2003, Pages 433-443

  Vignali, C ^a   Brandt, W N ^a   Schneider, D P ^a  

^a PENNSYLVANIA STATE UNIVERSITY   (United States)

Author keywords

Galaxies: active; Galaxies: nuclei; Quasars: general; Surveys; X rays

Indexed keywords

EID: 0141763733     PISSN: 00046256     EISSN: None     Source Type: Journal    
DOI: 10.1086/345973     Document Type: Article

References (94)

1. Akritas, M. G., & Siebert, J. 1996, MNRAS, 278, 919
2. Anderson, S. F. 1985, Ph.D. thesis, Washington Univ., Seattle
3. Anderson, S. F., & Margon, B. 1987, ApJ, 314, 111
4. Avni, Y., Soltan, A., Tananbaum, H., & Zamorani, G. 1980, ApJ, 238, 800
5. Avni, Y., & Tananbaum, H. 1982, ApJ, 262, L17
6. _. 1986, ApJ, 305, 83
7. Avni, Y., Worrall, D. M., & Morgan, W. A., Jr. 1995, ApJ, 454, 673
8. Bechtold, J., et al. 2002, ApJ, in press
9. Becker, R. H., White, R. L., & Helfand, D. J. 1995, ApJ, 450, 559
10. Begelman, M. C. 1978, MNRAS, 184, 53
11. Blair, A. J., Stewart, G. C., Georgantopoulos, I., Boyle, B. J., Griffiths, R. E., Shanks, T., & Almaini, O. 2000, MNRAS, 314, 138
12. Boroson, T. A., & Meyers, K. A. 1992, ApJ, 397, 442
13. Boyle, B. J., Shanks, T., Croom, S. M., Smith, R. J., Miller, L., Loaring, N., & Heymans, C. 2000, MNRAS, 317, 1014
14. Boyle, B. J., Shanks, T., Georgantopoulos, I., Stewart, G. C., & Griffiths, R. E. 1994, MNRAS, 271, 639
15. Brandt, W. N., Guainazzi, M., Kaspi, S., Fan, X., Schneider, D. P., Strauss, M. A., Clavel, J., & Gunn, J. E. 2001, AJ, 121, 591
16. Brandt, W. N., Laor, A., & Wills, B. J. 2000, ApJ, 528, 637
17. Brandt, W. N., et al. 2002, ApJ, 569, L5
18. Brown, B. W. M., Hollander, M., & Korwar, R. M. 1974, in Reliability and Biometry, ed. F. Proschan, & R. J. Serfling (Philadelphia: SIAM), 327
19. Buckley, J., & James, I. 1979, Biometrika, 66, 429
20. Cappi, M., Matsuoka, M., Comastri, A., Brinkmann, W., Elvis, M., Palumbo, G. G. C., & Vignali, C. 1997, ApJ, 478, 492
21. Comerford, J. M., Haiman, Z., & Schaye, J. 2002, ApJ, 580, 63
22. 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
23. Cruddace, R. G., Hasinger, G., & Schmitt, J. H. M. M. 1988, in Astronomy from Large Databases: Scientific Objectives and Methodological Approaches, ed. F. Murtagh, & A. Heck (Garching: ESO), 177
24. Dempster, A. P., Laird, N. M., & Rubin, D. B. 1977, J. Royal Stat. Soc. B, 39, 1
25. Dewangan, G. C., Singh, K. P., Gunn, K. F., Newsam, A. M., McHardy, I. M., & Jones, L. R. 2002, MNRAS, in press
26. Dickey, J. M., & Lockman, F. J. 1990, ARA&A, 28, 215
27. Djorgovski, S. G., Gal, R. R., Odewahn, S. C., de Carvalho, R. R., Brunner, R., Longo, G., & Scaramella, R. 1998, in Wide Field Surveys in Cosmology, ed. S. Colombi & Y. Mellier (Gif-sur-Yvette: Ed. Frontières), 89
28. Fan, X., et al. 2001a, AJ, 122, 2833
29. _. 1999, ApJ, 526, L57
30. _. 2000a, AJ, 119, 1
31. _. 2001b, AJ, 121, 54
32. _. 2000b, AJ, 120, 1167
33. Fasano, G., & Vio, R. 1988, in Newsletter of the Working Group for Modern Astronomical Methodology, 7, 2
34. Feigelson, E. D., & Nelson, P. I. 1985, ApJ, 293, 192
35. Freeman, P. E., Kashyap, V., Rosner, R., & Lamb, D. Q. 2002, ApJS, 138, 185
36. Fukugita, M., Ichikawa, T., Gunn, J. E., Doi, M., Shimasaku, K., & Schneider, D. P. 1996, AJ, 111, 1748
37. Gallagher, S. C., Brandt, W. N., Chartas, G., & Garmire, G. P. 2002, ApJ, 567, 37
38. Gallagher, S. C., Brandt, W. N., Laor, A., Elvis, M., Mathur, S., Wills, B. J., & Iyomoto, N. 2001, ApJ, 546, 795
39. Garmire, G. P., Bautz, M. W., Ford, P. G., Nousek, J. A., & Ricker, G. R. 2002, Proc. SPIE, 4851, in press
40. George, I. M., Turner, T. J., Yaqoob, T., Netzer, H., Laor, A., Mushotzky, R. F., Nandra, K., & Takahashi, T. 2000, ApJ, 531, 52
41. Giommi, P., Angelini, L., Jacobs, P., & Tagliaferri, G. 1992, in ASP Conf. Ser. 25, Astronomical Data Analysis Software and Systems I, ed. D. M. Worrall, C. Biemesderfer, & J. Barnes (San Francisco: ASP), 100
42. Goodrich, R. W., et al. 2001, ApJ, 561, L23
43. Green, P. J., Aldcroft, T. L., Mathur, S., Wilkes, B. J., & Elvis, M. 2001, ApJ, 558, 109
44. Green, P. J., et al. 1995, ApJ, 450, 51
45. Gunn, J. E., et al. 1998, AJ, 116, 3040
46. Hasinger, G., Burg, R., Giacconi, R., Schmidt, M., Trumper, J., & Zamorani, G. 1998, A&A, 329, 482
47. Hewett, P. C., Foltz, C. B., & Chaffee, F. H. 1995, AJ, 109, 1498
48. Isobe, T., Feigelson, E. D., & Nelson, P. I. 1986, ApJ, 306, 490
49. Ivezic, Z., et al. 2002, AJ, 124, 2364
50. Kauffmann, G., & Haehnelt, M. 2000, MNRAS, 311, 576
51. Kellermann, K. I., Sramek, R., Schmidt, M., Shaffer, D. B., & Green, R. F. 1989, AJ, 98, 1195
52. Kembhavi, A., Feigelson, E. D., & Singh, K. P. 1986, MNRAS, 220, 51
53. Kendall, M. G. 1970, in Rank Correlation Methods (4th ed.; New York: Hafner)
54. Kriss, G. A., & Canizares, C. R. 1985, ApJ, 297, 177
55. La Franca, F., et al. 2002, ApJ, 570, 100
56. La Franca, F., Franceschini, A., Cristiani, S., & Vio, R. 1995, A&A, 299, 19
57. Laor, A., & Brandt, W. N. 2002, ApJ, 569, 641
58. LaValley, M., Isobe, T., & Feigelson, E. D. 1992, in ASP Conf. Ser. 25, Astronomical Data Analysis Software and Systems, ed. D. M. Worrall, C. Biemesderfer, & J. Barnes (San Francisco: ASP), 245
59. Lightman, A. P., & Eardley, D. M. 1974, ApJ, 187, L1
60. Lineweaver, C. H. 2001, in COSMO-01: International Workshop on Particle Physics and the Early Universe, in press
61. Maiolino, R., Mannucci, F., Baffa, C., Gennari, S., & Oliva, E. 2001, A&A, 372, L5
62. Marshall, H. L., Avni, Y., Braccesi, A., Huchra, J. P., Tananbaum, H., Zamorani, G., & Zitelli, V. 1984, ApJ, 283, 50
63. Mineo, T., et al. 2000, A&A, 359, 471
64. Miyaji, T., Hasinger, G., & Schmidt, M. 2000, A&A, 353, 25
65. Mukai, K. 2001, PIMMS Users' Guide (Greenbelt: NASA/GSFC)
66. Page, K. L., Turner, M. J. L., Reeves, J. N., O'Brien, P. T., & Sembay, S. 2002, MNRAS, in press (astro-ph/0210140)
67. Pickering, T. E., Impey, C. D., & Foltz, C. B. 1994, AJ, 108, 1542
68. Rees, M. J. 1978, Phys. Scr., 17, 193
69. Reeves, J. N., & Turner, M. J. L. 2000, MNRAS, 316, 234
70. Richards, G. T., et al. 2002, AJ, 123, 2945
71. Schlegel, D. J., Finkbeiner, D. P., & Davis, M. 1998, ApJ, 500, 525
72. Schneider, D. P., et al. 2002, AJ, 123, 567
73. Shakura, N. I., & Sunyaev, R. A. 1976, MNRAS, 175, 613
74. Stern, D., Djorgovski, S. G., Perley, R. A., de Carvalho, R. R., & Wall, J. V. 2000, AJ, 119, 1526
75. Stoughton, C., et al. 2002, AJ, 123, 485
76. Tananbaum, H., Avni, Y., Green, R. F., Schmidt, M., & Zamorani, G. 1986, ApJ, 305, 57
77. Tolea, A., Krolik, J. H., & Tsvetanov, Z. 2002, ApJ, 578, L31
78. Turnshek, D. A., Monier, E. M., Sirola, C. J., & Espey, B. R. 1997, ApJ, 476, 40
79. Vanden Berk, D. E., et al. 2001, AJ, 122, 549
80. Vignali, C., Brandt, W. N., Fan, X., Gunn, J. E., Kaspi, S., Schneider, D. P., & Strauss, M. A. 2001a, AJ, 122, 2143
81. Vignali, C., Brandt, W. N., Schneider, D. P., Garmire, G. P., & Kaspi, S. 2003, AJ, in press
82. Vignali, C., Comastri, A., Cappi, M., Palumbo, G. G. C., Matsuoka, M., & Kubo, H. 1999, ApJ, 516, 582
83. Vignali, C., Comastri, A., Fiore, F., & La Franca, F. 2001b, A&A, 370, 900
84. Voges, W., et al. 1999, A&A, 349, 389
85. Weymann, R. J., Morris, S. L., Foltz, C. B., & Hewett, P. C. 1991, ApJ, 373, 23
86. Wyithe, S., & Loeb, A. 2002, Nature, 417, 923
87. Wilkes, B. J., & Elvis, M. 1987, ApJ, 323, 243
88. Wilkes, B. J., Tananbaum, H., Worrall, D. M., Avni, Y., Oey, M. S., & Flanagan, J. 1994, ApJS, 92, 53
89. Worrall, D. M., Tananbaum, H., Giommi, P., & Zamorani, G. 1987, ApJ, 313, 596
90. York, D. G., et al. 2000, AJ, 120, 1579
91. Yuan, W., Brinkmann, W., Siebert, J., & Voges, W. 1998a, A&A, 330, 108
92. Yuan, W., Siebert, J., & Brinkmann, W. 1998b, A&A, 334, 498
93. Zamorani, G., et al. 1981, ApJ, 245, 357
94. Zimmermann, H. U., Boese, G., Becker, W., Belloni, T., Döbereiner, S., Izzo, C., Kahabka, P., & Schwentker, O. 1998, EXSAS User's Guide (MPE Report) (Garching: ROSAT Sci. Data Cent.)