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ABSTRACT We found a broad absorption line (BAL) outflow in the VLT/UVES spectrum of the quasar SDSS J235702.54−004824.0, in which we identified four subcomponents. We measured the column densities of the ions in one of the subcomponents (v = −1600 km s−1), which include O i and Fe ii. We found the kinetic luminosity of this component to be at most $$\sim 2.4{{\ \rm per\ cent}}$$ of the quasar’s Eddington luminosity. This is near the amount required to contribute to active galactic nucleus feedback. We also examined the time variability of a C iv mini-BAL found at v = −8700 km s−1, which shows a shallower and narrower absorption feature attached to it in previous SDSS observations from 2000 to 2001, but not in the spectra from 2005 and onwards.
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VLT/UVES observation of the outflow in quasar SDSS J1439-0106
ABSTRACT We analyse the VLT/UVES spectrum of the quasar SDSS J143907.5-010616.7, retrieved from the UVES Spectral Quasar Absorption Database. We identify two outflow systems in the spectrum: a mini broad absorption line (mini-BAL) system and a narrow absorption line (NAL) system. We measure the ionic column densities of the mini-BAL ($$v$$ = −1550 km s−1) outflow, which has excited state absorption troughs of $${\rm Fe\, \rm {\small {ii}}}$$. We determine that the electron number density $$\log {n_e}=3.4^{+0.1}_{-0.1}$$, based on the ratios between the excited and ground state abundances of $${\rm Fe\, \rm {\small {ii}}}$$, and find the kinetic luminosity of the outflow to be $${\lesssim}0.1\,\hbox{per cent}$$ of the quasar’s Eddington luminosity, making it insufficient to contribute to AGN feedback.
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- Award ID(s):
- 2106249
- PAR ID:
- 10370145
- Publisher / Repository:
- Oxford University Press
- Date Published:
- Journal Name:
- Monthly Notices of the Royal Astronomical Society
- Volume:
- 516
- Issue:
- 1
- ISSN:
- 0035-8711
- Page Range / eLocation ID:
- p. 100-105
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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