The spectrum and polarization of the nucleus of NGC 4151

Details The spectrum and polarization of the nucleus of NGC 4151 The spectrum and polarization of the nucleus of NGC 4151

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...240..759s&link_type=abstract

Astrophysical Journal, Part 1, vol. 240, Sept. 15, 1980, p. 759-767.

Astronomy and Astrophysics

Astrophysics

79

Astronomical Photometry, Astronomical Spectroscopy, Galactic Nuclei, Polarization (Waves), Seyfert Galaxies, Linear Polarization, Star Distribution

Scientific paper

Simultaneous spectropolarimetric and spectrophotometric observations of the nucleus of NGC 4151 shows strong features of a Seyfert type 1 galaxy and weak emission features including broad Fe II and narrow lines of Fe II. The polarization results indicate that the narrow Balmer line cores and forbidden lines are polarized alike, but that the broad-line emission is unpolarized; this confirms the distinction between a high-density, broadline emission region and the lower density material which produces the permitted-line cores and forbidden lines. It was concluded that the observed NGC 4151 continuum can be reproduced by a combination of a uniformly polarized synchrotron power-law component and a galactic stellar population in proportions of 1 to 1 at visual wavelengths.

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