Evolution of the Outflows in NGC 3516
arXiv:1805.04406 · doi:10.3847/1538-4357/aaa95d
Abstract
We analyze the 2011 HST/COS spectrum of the Seyfert 1 galaxy NGC 3516, which demonstrates clear changes in one of the intrinsic absorption troughs (component 5), slight evidence of change in a second trough (component 6), and the appearance of a new absorption trough (component 9). We interpret both the changes and the appearance of the new trough as bulk motion across the line of sight. The implied lower limit on the transverse velocity of component 5 is 360 km/s, compared to the earlier 2001 HST/STIS spectrum, while the lower limits for components 6 and 9 are 920 km/s, based on 2009 FUSE data. Component 5 also exhibits a shift in velocity centroid. This is only the second known case of this behavior in a Seyfert galaxy. Due to the high quality of the HST/COS spectrum, we identify a previously undetected trough due to an excited state of Si II for component 1. In combination with the resonance trough of Si II and photoionization modeling, we directly determine the distance of the component 1 outflow to be 67.2 pc.
25 pages, 6 figures
References in corpus (7)
- Powerful Outflows and Feedback from Active Galactic Nuclei
- Feedback from Active Galactic Nuclei: Energy- versus momentum-driving
- The Blast Wave Model for AGN Feedback: Effects on AGN Obscuration
- CalFUSE v3: A Data-Reduction Pipeline for the Far Ultraviolet Spectroscopic Explorer
- Fast cold gas in hot AGN outflows
- Intrinsic Absorption Properties in Active Galaxies Observed with the Far Ultraviolet Spectroscopic Explorer
- An Internet Database of Ultraviolet Lightcurves for Seyfert Galaxies
Cited by in corpus (5)
- On the Observational Difference Between the Accretion Disk-Corona Connections among Super- and Sub-Eddington Accreting Active Galactic Nuclei
- Reverberation Mapping of Changing-look Active Galactic Nucleus NGC 3516
- Changing-look event in NGC 3516: continuum or obscuration variability?
- The Shape of AGN-Driven Winds in the Seyfert Galaxy NGC 3516
- Dissecting the multiple-component outflow in NGC 5548 with absorption-line Variability