The MG II line profile in the Seyfert galaxy NGC 4151: A new outflowing component

Details The MG II line profile in the Seyfert galaxy NGC 4151: A new outflowing component The MG II line profile in the Seyfert galaxy NGC 4151: A new outflowing component

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.263..633l&link_type=abstract

In ESA Proceedings of an International Symposium on New Insights in Astrophysics. Eight Years of UV Astronomy with IUE p 633-64

Astronomy and Astrophysics

Astrophysics

1

Absorption Spectra, Galactic Radiation, Magnesium, Seyfert Galaxies, Iue, Line Spectra, Quasars

Scientific paper

This paper examines the Mg II λλ2795,2802 doublet in the Seyfert galaxy NGC 4151 at a higher resolution than has previously been used, searching for velocity systems in absorption and emission. Evidence is presented for a new, narrow, outflowing absorption system in Mg II having a velocity of +825 km s-1 relative to the sun, -165 km s-1 relative to the systemic velocity of NGC 4151. This feature is not present in Ly α or C IV and possible explanations for this are considered. For the Mg II and C IV lines a model decomposition of the line profile is presented.

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