Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...168...32b&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 168, no. 1-2, Nov. 1986, p. 32-40.
Astronomy and Astrophysics
Astronomy
44
Active Galaxies, Continuous Spectra, Emission Spectra, Infrared Astronomy, Seyfert Galaxies, Spectral Line Width, Ultraviolet Astronomy, Astronomical Spectroscopy, Hydrogen Clouds, Spatial Distribution, Spectrum Analysis, Stellar Spectra
Scientific paper
The overall continuum spectra of 10 narrow line active galaxies are presented based on IR ground-based and IRAS photometry, long slit optical spectrophotometry and UV spectroscopy obtained with the IUE. Nonstellar components found include a nonthermal power law continuum in the optical, a thermal UV component from an accretion disk, Balmer continuum emission, and three dust components with typical temperatures of 40, 150, and 1000 K. The presence of a broad component in H-alpha, and power law overall continua, suggest that NGC 5506 and Tol 0109-380 are probably obscured Seyfert type I objects. Sufficient ionizing photons are produced by the UV excess to account for the observed line emission.
Boisson Catherine
Durret Florence
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