Other
Scientific paper
Feb 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....93..301f&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 93, Feb. 1987, p. 301-309.
Other
5
Astronomical Spectroscopy, Charge Coupled Devices, Seyfert Galaxies, Spectrum Analysis, Galactic Nuclei, Galactic Structure, Infrared Spectra, Ultraviolet Spectra, Visible Spectrum
Scientific paper
This paper presents a CCD broadband study of the Seyfert galaxy NGC 3783. The photometric behavior of the different components of the galaxy is analyzed in an attempt to isolate the BV-RIKC monochromatic continuum flux coming from the innermost nucleus. The observed flux distribution is combined with published far-ultraviolet and near-infrared measures. The existence of two main spectral components is suggested. One of these dominates the near infrared with a "pure" power law spectrum, while the other has a peak in the optical range and becomes a power law in the far UV. The latter component is interpreted in terms of synchrotron emission as has been suggested by Barr et al. Image processing shows the existence of faint bridges which connect the nuclear regions with the annular structure of the galaxy. The color of these structures is rather blue compared to the underlying disk. A tentative explanation is that a significant fraction of their brightness may come from nuclear light scattered by electrons moving along a jet stream.
Calderón Jesus H.
Feinstein Carlos
Forte Juan C.
Vega Irene E.
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