Extended Infrared Emission in Seyfert Galaxies

Bibcode
1987IAUS..121..127R
Rodriguez Espinosa, J. M.; Rudy, R. J.
Referencia bibliográfica

Observational Evidence of Activity in Galaxies: Proceedings of the 121st Symposium of the International Astronomical Union, held in Byurakan, Armenia, U.S.S.R., June 3-7, 1986. Edited by E. E. Khachikian, Klaus J. Fricke and Jorge Melnick. International Astronomical Union. Symposium no. 121, Kluwer Academic Publishers, Dordrecht, p.127

Fecha de publicación:
0
1987
Número de autores
2
Número de autores del IAC
0
Número de citas
5
Número de citas referidas
3
Descripción
The authors have analyzed far-IR (IRAS) data for a sample of optically selected Seyfert galaxies. The far-infrared emission is uncorrelated, or at best weakly correlated, with the UV-optical emission from these sources. The authors find the far-IR emission to be extended in a number of objects. They discuss the possibility that Seyfert galaxies are undergoing circumnuclear bursts of star formation. For comparison with the large aperture IRAS data they have also obtained new ground-based measurements at 10 and 20 μm for a sample of 17 Seyfert galaxies. Conclusive evidence for extended 10 and 20 μm emission is seen in 7 out of 17 objects. Almost all of the objects have ground-based fluxes which are smaller than those measured by IRAS. For five objects the emission appears to be more extended at 10 μm than at 20 μm. This would be expected if the 10 μm emission arose, in part, from a population of very small grains for which single photon heating is important.
Tipo
Sin árbitro

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