The ASCA medium-sensitivity survey (the GIS catalog project): Source counts and evidence for emerging population of hard sources

Astrophysical Journal

Volumn 524, Issue 1 PART 2, 1999, Pages

  Ueda, Yoshihiro ^a   Takahashi, Tadayuki ^a   Ishisaki, Yoshitaka ^b   Ohashi, Takaya ^b   Makishima, Kazuo ^c  

^a JAPAN AEROSPACE EXPLORATION AGENCY   (Japan)

^b TOKYO METROPOLITAN UNIVERSITY   (Japan)

^c UNIVERSITY OF TOKYO   (Japan)

Author keywords

Diffuse radiation; Galaxies: active; Surveys; X rays: galaxies

Indexed keywords

EID: 0033543912     PISSN: 0004637X     EISSN: 15384357     Source Type: Journal    
DOI: 10.1086/312300     Document Type: Article

References (27)

1. Akiyama, M., et al. 1999, ApJ, submitted
2. Awaki, H., Koyama, K., Inoue, H., & Halpern, J. P. 1991, PASJ, 43, 195
3. Butcher, J. A., et al. 1997, MNRAS, 291, 437
4. Cagnoni, I., Della Ceca, R., & Maccacaro, T. 1998, ApJ, 493, 54
5. Comastri, A., Setti, G., Zamorani, G., & Hasinger, G. 1995, A&A, 296, 1
6. Dickey, J. M., & Lockman F. J. 1990, ARA&A, 28, 215
7. Fabian, A. C., & Barcons, X. 1992, ARA&A, 30, 429
8. Fiore, F., et al. 1999, MNRAS, 306, L55
9. Gendreau, K. C., Barcons, X., & Fabian, A. C. 1998, MNRAS, 297, 41
10. Gioia, I. M., et al. 1990, ApJS, 72, 567
11. Hasinger, G. 1998, Astron. Nachr., 319, 37
12. Hasinger, G., Burg, R., Giacconi, R., Schmidt, M., Trümper, J., & Zamorani, G. 1998, A&A, 329, 482
13. Hayashida, K., Inoue, H., & Kii, T. 1992, in Frontiers of X-Ray Astronomy, ed. Y. Tanaka & K. Koyama (Tokyo: Universal Academy Press), 653
14. Ishisaki, Y., Takahashi, T., Kubo, H., Ueda, Y., Makishima, K., & The GIS Team. 1995, ASCA Newsl. No. 3 (Washington DC: NASA/GSFC), 19
15. Kondo, H., et al. 1992, in Frontiers of X-Ray Astronomy, ed. Y. Tanaka & K. Koyama (Tokyo: Universal Academy Press), 655
16. Makishima, K., et al. 1996, PASJ, 48, 171
17. Mason, K. O., et al. 1999, MNRAS, in press
18. Ogasaka, Y., et al. 1998, Astron. Nachr., 319, 43
19. Ohashi, T., et al. 1996, PASJ, 48, 157
20. Piccinotti, G., Mushotzky, R. F., Boldt, E. A., Marshall, F. E., Serlemitsos, P. J., & Shafer, R. A. 1982, ApJ, 253, 485
21. Schmidt, M., et al. 1998, A&A, 329, 495
22. Takahashi, T., Ueda, Y., Ishisaki, Y., Ohashi, T., & Makishima, K. 1998, Astron. Nachr., 319, 91
23. Tanaka, Y., Inoue, H., & Holt, S. S. 1994, PASJ, 46, L37
24. Ueda, Y., et al. 1998, Nature, 391, 866
25. _. 1999a, ApJ, 518, 656
26. Ueda, Y., Takahashi, T., Ishisaki, Y., & Makishima, K. 1997, in All-Sky X-Ray Observations in the Next Decade, ed. M. Matsuoka & N. Kawai (Wako: RIKEN), 55
27. Ueda, Y., Takahashi, T., Ishisaki, Y., Ohashi, T., & Makishima, K. 1999b, in preparation