X-ray properties of the weak seyfert 1 nucleus in NGC 4639

Astrophysical Journal

Volumn 525, Issue 1 PART 1, 1999, Pages 168-175

  Ho, Luis C ^a   Ptak, Andrew ^b   Terashima, Yuichi ^c   Kunieda, Hideyo ^d   Serlemitsos, Peter J ^c   Yaqoob, Tahir ^c   Koratkar, Anuradha P ^e  

^a CARNEGIE OBSERVATORIES   (United States)

^b CARNEGIE MELLON UNIVERSITY   (United States)

^c NASA GODDARD SPACE FLIGHT CENTER   (United States)

^d NAGOYA UNIVERSITY   (Japan)

^e STScI   (United States)

Author keywords

Galaxies: active; Galaxies: individual (NGC 4639); Galaxies: nuclei; Galaxies: seyfert; X rays: galaxies

Indexed keywords

EID: 0033228176     PISSN: 0004637X     EISSN: 15384357     Source Type: Journal    
DOI: 10.1086/307898     Document Type: Article

References (44)

1. Barr, P., & Mushotzky, R. F. 1986, Nature, 320, 421
2. Bohlin, R. C., Savage, B. D., & Drake, J. K. 1978, ApJ, 224, 132
3. Calvani, H., et al. 1999, in preparation
4. Cardelli, J. A., Clayton, G. C., & Mathis, J. S. 1989, ApJ, 345, 245
5. de Vaucouleurs, G., de Vaucouleurs, A., Corwin, H. G., Jr., Buta, R. J., Paturel, G., & Fouqué, R. 1991, Third Reference Catalogue of Bright Galaxies (New York: Springer)
6. Elvis, M., Maccacaro, T., Wilson, A. S., Ward, M. J., Penston, M. V., Fosbury, R. A. E., & Perola, G. C. 1978, MNRAS, 183, 129
7. Filippenko, A. V., & Sargent, W. L. W. 1985, ApJS, 57, 503
8. _. 1986, in Structure and Evolution of Active Galactic Nuclei, ed. G. Giuricin et al. (Dordrecht: Reidel), 21
9. Gaskell, C. M., & Ferland, G. J. 1984, PASP, 96, 393
10. Ho, L. C. 1999, ApJ, 516, 672
11. Ho, L. C., Filippenko, A. V., & Sargent, W. L. W. 1995, ApJS, 98, 477
12. _. 1997a, ApJS, 112, 315
13. Ho, L. C., Filippenko, A. V., Sargent, W. L. W., & Peng, C. Y. 1997b, ApJS, 112, 391
14. Ishisaki, Y., et al. 1996, PASJ, 48, 237
15. Iwasawa, K., Fabian, A. C., & Nandra, K. 1999, MNRAS, 307, 611
16. Iyomoto, N., Makishima, K., Matsushita, K., Fukazawa, Y., Tashiro, M., & Ohashi, T. 1998, ApJ, 503, 168
17. Koratkar, A. P., Deustua, S., Heckman, T. M., Filippenko, A. V., Ho, L. C., & Rao, M. 1995, ApJ, 440, 132
18. Kriss, G. A., Canizares, C. R., & Ricker, G. R. 1980, ApJ, 242, 492
19. Kwan, J., & Krolik, J. H. 1981, ApJ, 250, 478
20. Lawrence, A., & Papadakis, I. 1993, ApJ, 414, L85
21. Mihara, T., Matsuoka, M., Mushotzkym, R. F., Kunieda, H., Otani, C., Miyamoto, S., & Yamauchi, M. 1994, PASJ, 46, L137
22. Murphy, E. M., Lockman, F. J., Laor, A., & Elvis, M. 1996, ApJS, 105, 369
23. Mushotzky, R. F. 1982, ApJ, 256, 92
24. Mushotzky, R. F., Fabian, A. C., Iwasawa, K., Kunieda, H., Matsuoka, M., Nandra, K., & Tanaka, Y. 1995, MNRAS, 272, L9
25. Mushotzky, R. F., & Wandel, A. 1989, ApJ, 339, 674
26. Nandra, K., George, I. M., Mushotzky, R. F., Turner, T. J., & Yaqoob, T. 1997a, ApJ, 476, 70
27. _. 1997b, ApJ, 477, 602
28. Netzer, H. 1975, MNRAS, 171, 395
29. Nicholson, K. L., Reichert, G. A., Mason, K. O., Puchnarewicz, E. M., Ho, L. C., Shields, J. C., & Filippenko, A. V. 1998, MNRAS, 300, 893
30. Osterbrock, D. E. 1981, ApJ, 249, 462
31. _. 1989, Astrophysics of Gaseous Nebulae and Active Galactic Nuclei (Mill Valley: University Science Books)
32. Ptak, A., Serlemitsos, P. J., Yaqoob, T., & Mushotzky, R. 1999, ApJS, 120, 179
33. Ptak, A., Yaqoob, T., Mushotzky, R., Serlemitsos, P., & Griffiths, R. 1998, ApJ, 501, L37
34. Ptak, A., Yaqoob, T., Serlemitsos, P. J., Kunieda, H., & Terashima, Y. 1996, ApJ, 459, 542
35. Raymond, J. C., & Smith, B. W. 1977, ApJS, 35, 419
36. Sandage, A., Saha, A., Tammann, G. A., Labhardt, L., Panagia, N., & Macchetto, F. D. 1996, ApJ, 460, L15
37. Sandage, A. R., & Tammann, G. A. 1981, A Revised Shapley-Ames Catalog of Bright Galaxies (Washington, DC: Carnegie Inst. Washington)
38. Serlemitsos, P., Ptak, A., & Yaqoob, T. 1996, in ASP Conf. Ser. 103, The Physics of LINERs, ed. M. Eracleous, A. Koratkar, C. Leitherer, & L. Ho (San Francisco: ASP), 70
39. Tanaka, Y., Inoue, H., & Holt, S. S. 1994, PASJ, 46, L37
40. Terashima, Y. 1999, Adv. Space Res., 23(5-6), 851
41. Terashima, Y., Kunieda, H., & Misaki, K. 1999, PASJ, 51, 277
42. Turner, T. J., & Pounds, K. A. 1989, MNRAS, 240, 833
43. Ward, M. J., Done, C., Fabian, A. C., Tennant, A. F., & Shafer, R. A. 1988, ApJ, 324, 767
44. Weedman, D. W. 1976, ApJ, 208, 30