The Seyfert 1 galaxy NGC 4593. I - Variability of the UV spectrum and physical conditions in the broad line emitting region

Details The Seyfert 1 galaxy NGC 4593. I - Variability of the UV spectrum and physical conditions in the broad line emitting region The Seyfert 1 galaxy NGC 4593. I - Variability of the UV spectrum and physical conditions in the broad line emitting region

Jan 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.202...85c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 202, Jan. 1983, p. 85-103.

Astronomy and Astrophysics

Astronomy

29

Emission Spectra, Galactic Structure, Line Spectra, Seyfert Galaxies, Spectral Energy Distribution, Ultraviolet Spectra, Accretion Disks, Continuous Spectra, Galactic Nuclei, Hydrogen Clouds, Interstellar Extinction, Iue, Lyman Spectra, Spectrophotometry, X Ray Sources

Scientific paper

Results obtained for UV observations of NGC 4593 are reported. The observations were carried out at two epochs using the low resolution spectrograph and the large apertures of the IUE satellite. The data reduction is presented. The properties of the UV continuum as well as its variability are investigated, discussing the selection of continuum windows and the correction for reddening. The UV emission and absorption lines are discussed in conjunction with the optical data. The broad line emitting region is found to be a composite region where high-excitation lines might be formed in a spherical system of optically thin clouds and the low excitation lines in a dense region heated by a nonradiative mechanism and shielded by the Lyman continuum. This dense region might be identifed with an accretion disk whose inner region provides the bulk of the Balmer lines and whose outer and thicker region emits Fe II lines.

Affiliated with

Also associated with

No associations

Rating

The Seyfert 1 galaxy NGC 4593. I - Variability of the UV spectrum and physical conditions in the broad line emitting region does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Seyfert 1 galaxy NGC 4593. I - Variability of the UV spectrum and physical conditions in the broad line emitting region, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Seyfert 1 galaxy NGC 4593. I - Variability of the UV spectrum and physical conditions in the broad line emitting region will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1197760