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University of Nebraska - Lincoln
Galaxies: abundances — galaxies: active — galaxies: individual (Mrk 279) — galaxies: Seyfert — line: formation — quasars: absorption lines
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Full-Text Articles in Physics
Chemical Abundances In An Agn Environment: X-Ray/Uv Campaign On The Markarian 279 Outflow, Nahum Arav, Jack R. Gabel, Kirk T. Korrista, Jelle S. Kaastra, Gerard A. Kriss, Ehud Behar, Elisa Constantini, C. Martin Gaskell, Ari Laor, C. Nalaka Kodituwakku, Daniel Proga, Masao Sako, Jennifer E. Scott, Katrien C. Steenbrugge
Chemical Abundances In An Agn Environment: X-Ray/Uv Campaign On The Markarian 279 Outflow, Nahum Arav, Jack R. Gabel, Kirk T. Korrista, Jelle S. Kaastra, Gerard A. Kriss, Ehud Behar, Elisa Constantini, C. Martin Gaskell, Ari Laor, C. Nalaka Kodituwakku, Daniel Proga, Masao Sako, Jennifer E. Scott, Katrien C. Steenbrugge
C. Martin Gaskell Publications
We present the first reliable determination of chemical abundances in an active galactic nucleus (AGN) outflow. The abundances are extracted from the deep and simultaneous Far Ultraviolet Spectroscopic Explorer (FUSE) and Hubble Space Telescope (HST ) STIS observations of Mrk 279. This data set is exceptional for its high signal-to-noise ratio, unblended doublet troughs, and little Galactic absorption contamination. These attributes allow us to solve for the velocity-dependent covering fraction and therefore obtain reliable column densities for many ionic species. For the first time, we have enough such column densities to simultaneously determine the ionization equilibrium and abundances in the …