Monitoring the UV spectrum of the Seyfert 1 galaxy NGC 4593 II: Short term variability

Details Monitoring the UV spectrum of the Seyfert 1 galaxy NGC 4593 II: Short term variability Monitoring the UV spectrum of the Seyfert 1 galaxy NGC 4593 II: Short term variability

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982esasp.176..537c&link_type=abstract

In ESA 3rd European IUE Conf. p 537-541 (SEE N83-11889 02-88)

Physics

1

Seyfert Galaxies, Ultraviolet Spectra, Variability, Continuums, Correlation Detection, Emission Spectra, Galactic Nuclei, Spectral Line Width, Stellar Luminosity

Scientific paper

The UV spectrum of NGC 4593 was observed twice at an interval of 9 days. Significant variations are found both in the line and the continuum which yield an upper limit to the size of the broad line region 2 times 10 to the 16th power cm. Several correlations are found, in particular between the intensity and the spectral index of the power law continuum at 2500 A. The short wavelength flux excess present in earlier data vanished in 1981. Emission line intensities are in general correlated with that of the continuum, with the high excitation lines showing the strongest variations.

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