Title: Ultraviolet observations and the extended spectrum of NGC 4151
Abstract: view Abstract Citations (21) References (20) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Ultraviolet observations and the extended spectrum of NGC 4151. Wu, C. -C. ; Weedman, D. W. Abstract Five-channel ultraviolet photometry of the Seyfert galaxy NGC 4151 was obtained at three epochs with the ANS. These data are combined with other recent results to illustrate the spectrum of the nucleus of NGC 4151 from 34 microns to 20 MeV, with corrections for galaxy contamination. It is found that no other part of the spectrum has a slope like the best-fitting power law for the X-rays. The C IV emission-line flux is measured; the C IV/H-beta ratio is between 5 and 8, which is similar to the ratio in quasars. Publication: The Astrophysical Journal Pub Date: August 1978 DOI: 10.1086/156312 Bibcode: 1978ApJ...223..798W Keywords: Astronomical Spectroscopy; Galactic Nuclei; Seyfert Galaxies; Ultraviolet Spectra; H Beta Line; Quasars; Radio Spectra; X Ray Spectra; Astrophysics; Seyfert Galaxies:UV Radiation full text sources ADS | data products NED (3)