Hostname: page-component-5c6d5d7d68-txr5j Total loading time: 0 Render date: 2024-08-07T03:27:13.119Z Has data issue: false hasContentIssue false
  • English
  • Français

Quasi Stellar Objects and Active Galactic Nuclei

Published online by Cambridge University Press:  12 April 2016

C. Barbieri
C. Barbieri*
Affiliation:
Institute of Astronomy, University of Padova, Italy

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The role of the Schmidt telescopes in the discovery of the Quasi Stellar Objects and of the Active Galactic Nuclei, and in the understanding of their properties was and continues to be of the greatest importance. Thousands of Radio-Sources have been quickly associated to their optical counterparts thanks to the worldwide availability of the Palomar Observatory Sky Survey plates and charts and more recently of the films of the ESO B Survey. Other thousands of QSOs and AGNs devoid of radio emission are found by the large Schmidts nowaday in operation. This wealth of data give fundamental cosmological knowledge and insight in the physical processes occuring in these objects. I'll concentrate in this Review on two specific topics, namely on the discovery techniques and on the study of the optical variability. To both subjects, the 67/92 cm Schmidt telescope here at Asiago has made significant contributions. The first topic is treated in several excellent papers, such as the one by M. Smith (1978) and the one by P. Veron (1983); the material presented in the second part is largely new. In the following, I'll use rather loosely the terms QSOs and AGNs to designate a variety of objects including Quasars (those QSOs in catalogs of Radio-Sources), high-redshift compact galaxies with emission lines, BL LACset similia.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 78: Astronomy with Schmidt-type telescopes , 1984 , pp. 443 - 456
Copyright
Copyright © Reidel 1984

References

Arp, H.C., Hazard, C. 1980, Ap.J. 240, 726 Google Scholar
Arp, H.C., Surdej, J. 1982, Astron. & Astrophys. 109, 101 Google Scholar
Barbieri, C., Capaccioli, M., Cristiani, S. Nardon, G., Omizzolo, A. 1982, Mem. S.A.It. 53, nr. 3Google Scholar
Barbieri, C., Cristiani, S., Nardon, G., Romano, G. 1983, 24th Liege International Astrophys. Symp.Google Scholar
Barbieri, C., Cristiani, S., Romano, G. 1982, Astron. & Astrophys. 105, 369 Google Scholar
Barbieri, C., Erculiani, L., Rosino, L. 1968, Pubbl. Oss. Astr. Padova nr. 143 Google Scholar
Braccesi, A. 1967, Nuovo Cimento Google Scholar
Braccesi, A., Formiggini, L., Gandolfi, E. 1970, Astron. & Astrophys. 5, 264 Google Scholar
Berger, J., Fringant, A.M. 1977, Astron. & Astrophys. Suppl. 28, 123 Google Scholar
Green, R.F. 1976, P.A.S.P. 68, 665 Google Scholar
Haro, G., Luyten, W.J. 1962, Boll. Obs. Tonantzintla y Tacubaya nr. 22, 37 Google Scholar
Hazard, C., Arp, H.C., Morton, D.C. 1979, Nature 282, 271 Google Scholar
Iriarte, B., Chavira, E. 1955, Boll. Obs. Tonantzintla y Tacubaya nr. 12, 33 Google Scholar
Kinman, T.D. 1969, Nature vol. 224, 565 Google Scholar
Kron, R.G., Chiu, L.T.G. 1981, P.A.S.P. 93, 397 Google Scholar
Markarian, B.E. 1967, Astrofizika 3, 55 Google Scholar
Matthews, T.A., Sandage, A.R. 1963, Astrophys. J. 138, 30 Google Scholar
MacAlpine, G.M., Smith, S.B., Lewis, D.W. 1977, Ap. J. Suppl. 34, 95 Google Scholar
Naguchi, T., Maehara, H., Kondo, M. 1980, Ann. Tokio Astr. Obs. vol. l8, pag. 56 Google Scholar
Osmer, P.S. 1980, Objects of High Redshift, 78 (Abell and Peebles eds.) Google Scholar
Osmer, P.S., Smith, M.G. 1980, Ap.J. Suppl. 42, 333 CrossRefGoogle Scholar
Pica, A.J. Pollock, J.T. Smith, A.G. Leacock, R.J. Edwards, P.L. Scott, R.L. 1980, Astron. J. 85, 1442 CrossRefGoogle Scholar
Richter, N., Sahakian, K. 1965, Mitt, K. Schwarzchild Obs.Tautenburg Nr. 24, Teil I Google Scholar
Rubin, V. et al. 1967, Astrophys. J. 72, 59 Google Scholar
Sandage, A.R. 1967, Highlights of Astronomy, 47 (Perek ed.) Google Scholar
Sandage, A.R. Luyten, W.J. 1967, Astrophys. J. 148, 767 Google Scholar
Sandage, A.R. Veron, P. 1965, Astrophys. J. 142, 412 Google Scholar
Savage, A. 1978, Ph.D. Thesis, University of Sussex Google Scholar
Savage, A., Bolton, J.G. 1979, M.N.R.A.S. 188, 599 CrossRefGoogle Scholar
Smith, M.G. 1975, Ap.J. 202, 591 Google Scholar
Smith, M.G. 1978, Vistas in Astronomy 22, 23 Google Scholar
Steppe, H. 1978, Astr. & Astrophys. Suppl. 31, 209 Google Scholar
Usher, P.D. 1981, Ap.J. Suppl. 46, 117 Google Scholar
Usher, P.D., Warhock, A., Green, R.F. 1983, Astrophys.J. 269, 73 Google Scholar
Veron, P. 1983, 24th Liege Internat. Astrophys. Symp. Google Scholar
Weedman, , 1983, preprint Google Scholar
Weistrop, D. 1972, A.J. 77, 366 Google Scholar