Observations of H1414+089, QSO with extremely high velocity broad-absorption-line gas

1983 ◽  
Vol 95 ◽  
pp. 341 ◽  
Author(s):  
C. Foltz ◽  
B. Wilkes ◽  
R. Weymann ◽  
D. Turnshek
Keyword(s):  
Absorption Line ◽  
High Velocity ◽  
Broad Absorption ◽  
Broad Absorption Line

scholarly journals Broad absorption line quasars with redshifted troughs: high-velocity infall or rotationally dominated outflows?

2013 ◽  
Vol 434 (1) ◽  
pp. 222-256 ◽  
Author(s):  
P. B. Hall ◽  
W. N. Brandt ◽  
P. Petitjean ◽  
I. Pâris ◽  
N. Filiz Ak ◽  
...  
Keyword(s):  
Absorption Line ◽  
High Velocity ◽  
Broad Absorption ◽  
Broad Absorption Line

scholarly journals Gaia-assisted discovery of a detached low-ionisation BAL quasar with very large ejection velocities

2020 ◽  
Vol 634 ◽  
pp. A111 ◽  
Author(s):  
J. P. U. Fynbo ◽  
P. Møller ◽  
K. E. Heintz ◽  
J. N. Burchett ◽  
L. Christensen ◽  
...  
Keyword(s):  
Emission Line ◽  
Absorption Line ◽  
Emission Lines ◽  
Broad Absorption ◽  
Broad Absorption Line ◽  
Red Edge ◽  
First Case ◽  
Bl Lac ◽  
Spatially Extended ◽  
Extended Emission

We report on the discovery of a peculiar broad absorption line (BAL) quasar identified in our Gaia-assisted survey of red quasars. The systemic redshift of this quasar was difficult to establish because of the absence of conspicuous emission lines. Based on deep and broad BAL troughs of at least Si IV, C IV, and Al III, a redshift of z = 2.41 was established under the assumption that the systemic redshift can be inferred from the red edge of the BAL troughs. However, we observe a weak and spatially extended emission line at 4450 Å that is most likely due to Lyman-α emission, which implies a systemic redshift of z = 2.66 if correctly identified. There is also evidence for the onset of Lyman-α forest absorption bluewards of 4450 Å and evidence for Hα emission in the K band consistent with a systemic redshift of z = 2.66. If this redshift is correct, the quasar is an extreme example of a detached low-ionisation BAL quasar. The BALs must originate from material moving with very large velocities ranging from 22 000 km s−1 to 40 000 km s−1. To our knowledge, this is the first case of a systemic-redshift measurement based on extended Lyman-α emission for a BAL quasar. This method could also be useful in cases of sufficiently distant BL Lac quasars without systemic-redshift information.

scholarly journals Multifrequency VLBI Observations of the Broad Absorption Line Quasar J1020 4320: Recently Restarted Jet Activity?

2013 ◽  
Vol 65 (3) ◽  
pp. 57 ◽  
Author(s):  
Akihiro Doi ◽  
Yasuhiro Murata ◽  
Nanako Mochizuki ◽  
Hiroshi Takeuchi ◽  
Keiichi Asada ◽  
...  
Keyword(s):  
Absorption Line ◽  
Broad Absorption ◽  
Broad Absorption Line ◽  
Vlbi Observations

scholarly journals The orientation and polarization of broad absorption line quasars★

2012 ◽  
Vol 428 (2) ◽  
pp. 1565-1578 ◽  
Author(s):  
M. A. DiPompeo ◽  
M. S. Brotherton ◽  
C. De Breuck
Keyword(s):  
Absorption Line ◽  
Broad Absorption ◽  
Broad Absorption Line

Serendipitous Discovery of a Broad Absorption Line QSO at [CLC][ITAL]z[/ITAL][/CLC] = 2.169

1998 ◽  
Vol 115 (3) ◽  
pp. 890-894 ◽  
Author(s):  
Gabriela Canalizo ◽  
Alan Stockton ◽  
Katherine C. Roth
Keyword(s):  
Absorption Line ◽  
Broad Absorption ◽  
Broad Absorption Line

scholarly journals Surprises from a Deep [ITAL]ASCA[/ITAL] Spectrum of the Broad Absorption Line Quasar PHL 5200

2001 ◽  
Vol 551 (1) ◽  
pp. L13-L16 ◽  
Author(s):  
S. Mathur ◽  
G. Matt ◽  
P. J. Green ◽  
M. Elvis ◽  
K. P. Singh
Keyword(s):  
Absorption Line ◽  
Broad Absorption ◽  
Broad Absorption Line

scholarly journals Variability in Quasar Broad Absorption Line Outflows

2009 ◽  
Vol 5 (S267) ◽  
pp. 394-394
Author(s):  
Daniel M. Capellupo ◽  
Fred Hamann ◽  
Joseph C. Shields ◽  
Tom A. Barlow ◽  
Paola Rodriguez
Keyword(s):  
Physical Properties ◽  
Galaxy Evolution ◽  
High Velocity ◽  
Rest Frame ◽  
Structure Evolution ◽  
Cover Time ◽  
Broad Absorption ◽  
Broad Absorption Line ◽  
Quasar Spectra ◽  
Observation Period

Broad absorption lines (BALs) in quasar spectra identify high-velocity outflows that likely exist in all quasars and could play a major role in feedback to galaxy evolution (e.g., Di Matteo et al. 2005). Studying the variability in these BALs can help us understand the structure, evolution, and basic physical properties of these outflows. We are investigating BAL variability in a sample of 25 luminous quasars at 1.2 < z < 2.9 with multi-epoch observations that cover time scales from less than around a month to 7.7 years in the quasar rest-frame. We investigate changes in the C iv λ1549 BALs, and we see a variety of phenomena, including some BALs that either appeared or disappeared completely and other BALs that did not change at all over the whole observation period.

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