Abstract
An attempt is made to explain the infrared radiation observed for several quasars and Seyfert galaxies as thermal radiation of a dust envelope surrounding the cores of these objects. Two kinds of dust particles (graphite and silica) are taken into consideration. It is shown that the observed spectral behaviour and the luminosity in the infrared can be introduced as thermal radiation of silica grains. In the case of 3C 273 one finds that the radius of the dust envelope is about 50 pc and the total mass of dust is about 600M ⊙.
Similar content being viewed by others
References
Apparao, K. M. V. and Rengarajan, T. N.: 1971,Astrophys. Space Sci. 14, 460.
Burbidge, E. M.: 1967,Ann. Rev. Astron. Astrophys. 5, 399.
Burbidge, G. R. and Stein, W. A.: 1970,Astrophys. J. 160, 573.
Dorschner, J., Friedemann, C., Gürtler, J., Oleak, H., and Schmidt, K.-H.: 1972,Astron. Nachr. 294, 65.
Jones, T. W. and Kellogg, P. J.: 1972,Astrophys. J. 172, 283.
Kellman, S. A. and Gaustad, J. E.: 1969,Astrophys. J. 157, 1465.
Kleinmann, D. E. and Low, F. J.: 1970,Astrophys. J. 159, L165.
Knacke, R. F.: 1968,Nature 217, 44.
Lenham, A. P. and Treherne, D. M.: 1969,Observatory 86, 36.
Martin, P. G.: 1971,Astrophys. Letters 7, 193.
Neugebauer, G., Becklin, E., and Hyland, A. R.: 1971,Ann. Rev. Astron. Astrophys. 9, 67.
Schmidt, K.-H.: 1971,Astron. Nachr. 293, 125.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Dorschner, J., Friedemann, C., Gürtler, J. et al. Infrared spectra of quasars and related objects. Astrophys Space Sci 19, 263–270 (1972). https://doi.org/10.1007/BF00645710
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00645710