Monitoring the Variable UV Absorption in NGC4051 with FUSE
Abstract
We propose two FUSE observations of the bright, nearby Narrow-Line Seyfert 1
galaxy NGC 4051. By studying the variability of the far-UV absorption lines, we aim to constrain the dynamical evolution, physical properties (density and ionization parameter), location, and extent of the absorbing gas. FUSE observations of the O VI 1032, 1038 A lines will bridge the gap in ionization potential between the current HST and Chandra spectra, enabling us to identify UV/X-ray absorption system counterparts. The C III 977 A line and higher-order Lyman lines (Lyman beta and up) will fill in key gaps in our understanding of the ionization properties of many of the UV absorption systems. NGC 4051 is an ideal candidate for this study and will serve as an archetype for characterizing the absorption in low-luminosity Seyferts.- Publication:
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FUSE Proposal
- Pub Date:
- 2003
- Bibcode:
- 2003fuse.prop.C019B
- Keywords:
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- FUSE Proposal ID #C019