X-ray spectral survey of wgacat quasars. i. spectral evolution and low-energy cutoffs

Astrophysical Journal

Volumn 492, Issue 1 PART I, 1998, Pages 79-90

  Fiore, Fabrizio ^a   Elvis, Martin ^b   Giommi, Paolo ^c   Padovani, Paolo ^d  

^a HARVARD SMITHSONIAN CENTER FOR ASTROPHYSICS   (United States)

^b INAF OSSERVATORIO ASTRONOMICO DI ROMA   (Italy)

^c BeppoSAX Science Data Center   (Italy)

^d UNIVERSITY OF ROME TOR VERGATA   (Italy)

Author keywords

Quasars: general; Radio continuum: galaxies; X rays: galaxies

Indexed keywords

EID: 21944455094     PISSN: 0004637X     EISSN: 15384357     Source Type: Journal    
DOI: 10.1086/305024     Document Type: Article

References (58)

1. Anders, E., & Ebihara, M. 1982, Geochim. Cosmochim. Acta, 46, 2363
2. Bechtold, J., et al. 1994, AJ, 108, 374
3. Blitz, L., Magnani, K., & Mundy, L. 1984, ApJ, 282, L9
4. Brunner, H., Lamer, G., Worrall, D., & Staubert, R. 1994, A&A, 287, 436
5. Buhler, P., Courvoisier, T. J.-L, Staubert, R., Brunner, H., & Lamer, G. 1995, A&A, 295, 309
6. Cappi, M., et al. 1997, ApJ, in press
7. Ciliegi, P., Elvis, M., Wilkes, B. J., Boyle, B. J., McMahon, R. G., & Maccacaro, T. 1995, MNRAS, 277, 1463
8. Ciliegi, P., & Maccacaro, T. 1996, MNRAS, 282, 477
9. Combes, F. 1991, ARA&A, 29, 195
10. Condon, J. J., Cotton, W. D., Greisen, E. W., Yin, Q. F., Perley, R. A., Taylor, G. B., & Broderick, J. J. 1998, http://www.cv.nrao.edu/∼jcondon/nvss.html
11. Dalla Casa, D., Fanti, C., Schilizzi, R. T., & Spencer, R. E. 1995, A&A, 295, 27
12. de Vries, H. W., Heithausen, A., & Thaddeus, P. 1987, ApJ, 319, 723
13. Elvis, M., Fiore, F., Giommi, P., & Padovani, P. 1998a, ApJ, 492, 91 (Paper II)
14. _. 1998b, MNRAS, in press
15. Elvis, M., Fiore, F., Mathur, S., & Wilkes, B. 1994a, ApJ, 425, 103
16. Elvis, M., Fiore, F., Wilkes, B. J., McDowell, J., & Bechtold, J. 1994b, ApJ, 422, 60
17. Elvis, M., & Lawrence, A. 1985, in Astrophysics of Active Galaxies and Quasi-stellar Objects, ed. J. Miller (Mill Valley: University Science Books)
18. Elvis, M., Mathur, S., & Wilkes, B. 1995, ApJ, 452, 230
19. Fiore, F., Elvis, M., McDowell, J. C., Siemiginowska, A., & Wilkes, B. J. 1994, ApJ, 431, 515
20. Fiore, F., Elvis, M., Siemiginowska, A., Wilkes, B. J., McDowell, J. C., & Mathur, S. 1995, ApJ, 449, 74
21. Giommi, P., et al. 1998, in preparation
22. Green, P. J., et al. 1995, ApJ, 450, 51
23. Hasinger, G., et al. 1992, Legacy, 2, 77, OGIP MEMO, CAL/ROS/92-001
24. Heiles, C., & Cleary, M. N. 1979, Australian J. Phys. Suppl., 47, 1
25. Hewitt, A., & Burbidge, G. 1993, ApJS, 87, 451
26. Kellermann, K. I., Sramek, R., Schmidt, M., Shaffer, D. B., & Green, R. 1989, AJ, 98, 1195
27. Kendall, M., & Stuart, A. 1979, The Advanced Theory of Statistics (New York: Macmillan)
28. Laor, A., Fiore, F., Elvis, M., Wilkes, B. J., & McDowell, J. C. M. 1994, ApJ, 435, 611
29. Laor, A., Fiore, F., Elvis, M., Wilkes, B. J., & McDowell, J. C. M. 1997, ApJ, 477, 93
30. Lawrence, A., & Elvis, M. 1982, ApJ, 256 410
31. Maraschi, L., Fossati, G., Tagliaferri, G., & Treves, A. 1995, ApJ, 443, 478
32. Marscher, A. 1988, ApJ, 334, 552
33. Morrison, R., & McCammon, D. 1983, ApJ, 270, 119
34. Nicastro, F., et al. 1997, ApJ, in preparation
35. Padovani, P., & Giommi, P. 1996, MNRAS, 279, 526
36. Padovani, P., Giommi, P., & Fiore, F. 1997, MNRAS, 284, 569
37. Puchnarewicz, E. M., et al. 1996, MNRAS, 281, 1243
38. Schartel, N., Walter, R., Fink, H. H., & Trümper, J. 1996a, A&A, 307, 33
39. Schartel, N., et al. 1996b, MNRAS, 283, 101
40. Siebert, J., Matsuoka, M., Brinkmann, W., Cappi, M., Mihara, T., & Takahashi, T. 1996, A&A, 307, 8
41. Siegel, S. 1956, Nonparametric Statistics (New York: McGraw-Hill)
42. Snowden, S. L., McCammon, D., Burrows, D. N., & Mendenhall, J. A. 1994, ApJ, 424 714
43. Snowden, S. L., Plucinsky, P. P., Briel, U., Hasinger, G., & Pfefferman, E. 1992, ApJ, 393, 819
44. Snowden, S. L., et al. 1995, ApJ, 454, 643
45. _. 1997, ApJ, 485, in press
46. Stark, A. A., Gammie, C. F., Wilson, R. W., Bally, J., Linke, R. A., Heiles, C., & Hurwitz, M. 1992, ApJS, 77
47. Stickel, M., & Kühr, H. 1994, A&AS, 103, 349
48. Stickel, M., Meisenheimer, K., & Kühr, H. 1994, A&AS, 105, 211
49. Stocke, J. T., Morris, S. L., Weymann, R. J., & Foltz, C. B. 1992, ApJ, 396, 487
50. Turner, T. J., et al. 1995, ApJ, 445, 660
51. Véron-Cetty, M.-P., & Véron, P. 1993, A Catalogue of Quasars and Active Nuclei (6th ed.; ESO Sci. Rep. 13)
52. von Montigny, C., et al. 1995, ApJ, 440, 525
53. Voges, W., et al. 1994, ROSATSRC, announcement at ROSAT Workshop, on behalf of the ROSAT Consortium
54. Walter, R., & Fink, H. H. 1993, A&A, 274, 105
55. White, N. E., Giommi, P., & Angelini, L. 1995, http://heasarc.gsfc.nasa.gov/W3Browse/all/wgacat.html
56. Wilkes, B. J., & Elvis, M. 1987, ApJ, 323, 243
57. Wilkes, B. J., Elvis, M., Fiore, F., McDowell, J. C., Tananbaum, H., & Lawrence, A. 1992, ApJ, 393, L1
58. Zamorani, G., et al. 1981, ApJ, 245, 357