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0.3 to 100 μm continua of Seyfert 1 galaxies*

Published online by Cambridge University Press:  19 July 2016

G. Fabbiano ,
M. Elvis ,
N. Carleton ,
S.P. Willner ,
A. Lawrence  and
M.J. Ward
G. Fabbiano
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
M. Elvis
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
N. Carleton
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
S.P. Willner
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
A. Lawrence
Affiliation:
Queen Mary College, London, England
M.J. Ward
Affiliation:
Institute of Astronomy, Cambridge, England

Extract

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The questions we wish to address with this work are: What is the shape of the continuum spectrum of an active nucleus? Can we identify thermal and non-thermal components? Previous work on this subject studied different non-overlapping samples in narrow frequency bands. A significant step forward was taken by Malkan and Sargent (1982) who studied the IR (10μm) through UV continuum of a small sample of objects. We report here results for the first part of the study of the complete continuum for a hard X-ray selected sample of 37 Seyfert 1 galaxies. This selection criterion ensures a sample unbiased for optical-IR studies, as the hard X-rays are not affected by reddening (Lawrence and Elvis 1982). The data consist of our own 1–20 μm ground-based IR observations, 100 and 60 μm IRAS fluxes and optical UBVR photometry.

Type
II. Continuum Emission
Information
Symposium - International Astronomical Union , Volume 119: Quasars , 1986 , pp. 85 - 86
Copyright
Copyright © Reidel 1986 

References

Lawrence, A. and Elvis, M, 1982, Ap. J., 253, 410.CrossRefGoogle Scholar
Malkan, M.A. 1984.Google Scholar
Malkan, M.A. and Sargent, W.L.W. 1982, Ap. J., 254, 22.CrossRefGoogle Scholar
Mushotzky, R. 1982, Ap. J., 256, 92.Google Scholar