IUE Spectra of the Seyfert 1 Galaxies Mrk 335 and NGC 4051

Details IUE Spectra of the Seyfert 1 Galaxies Mrk 335 and NGC 4051 IUE Spectra of the Seyfert 1 Galaxies Mrk 335 and NGC 4051

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000jkas...33...81h&link_type=abstract

Journal of the Korean Astronomical Society, vol. 33, no. 2, pp. 81-88

Astronomy and Astrophysics

Astronomy

2

Galaxy Nucleus: Seyfert 1, Line Profiles: Iue Spectrum: Individual (Mrk 335, Ngc 4051)

Scientific paper

The international ultraviolet explorer (IUE) spectra of a low dispersion ~6 A, have been investigated for two Seyfert 1 galaxies, Mrk 335 and NGC 4051, well known for the line variability. The electron densities of broad line region (BLR) of these variable Seyfert 1 galaxies have been derived, which showed a non-linear abrupt variation from 1e+8 to 1e+10 cm-3 within a month. We also found the excitation (or temperature) changes in the Mrk 335 BLR from the IUE broad line profiles analysis, but no such evidence in the NGC 4051. The large amount of mass inflow activity through the bar or spiral structure of host galaxies, may trigger the density change in BLR and emission line variability for both objects. Mass of the giant black holes appear to be order of 1e+7 Msun for both variable Seyfert 1's.

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