期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 450, 期 1, 页码 1085-1093出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stv572
关键词
line: formation; quasars: absorption lines; quasars: individual: SDSS J083126.15+035408.0
资金
- NASA STScI [GO 11686, GO 12022]
- NSF [AST 1413319]
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1413319] Funding Source: National Science Foundation
We measure the location and energetics of a S IV BALQSO outflow. This outflow has a velocity of 10 800 km s(-1) and a kinetic luminosity of 10(45.7) erg s(-1), which is 5.2 per cent of the Eddington luminosity of the quasar. From collisional excitation models of the observed S IV/S IV* absorption troughs, we measure a hydrogen number density of n(H) = 10(4.3) cm(-3), which allows us to determine that the outflow is located 110 pc from the quasar. Since S IV is formed in the same ionization phase as C IV, our results can be generalized to the ubiquitous C IV broad absorption lines (BALs). Our accumulated distance measurements suggest that observed BAL outflows are located much farther away from the central source than is generally assumed (0.01-0.1 pc).
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