J/ApJ/791/88 C IV BAL troughs properties in quasars (Filiz+, 2014)
The dependence of C IV broad absorption line properties on accompanying Si IV
and Al III absorption: relating quasar-wind ionization levels, kinematics,
and column densities.
Filiz Ak N., Brandt W.N., Hall P.B., Schneider D.P., Trump J.R.,
Anderson S.F., Hamann F., Myers A.D., Paris I., Petitjean P., Ross N.P.,
Shen Y., York D.
<Astrophys. J., 791, 88 (2014)>
=2014ApJ...791...88F 2014ApJ...791...88F (SIMBAD/NED BibCode)
ADC_Keywords: QSOs ; Spectroscopy ; Equivalent widths
Keywords: quasars: absorption lines
Abstract:
We consider how the profile and multi-year variability properties of a
large sample of C IV Broad Absorption Line (BAL) troughs change when
BALs from Si IV and/or Al III are present at corresponding velocities,
indicating that the line of sight intercepts at least some lower
ionization gas. We derive a number of observational results for C IV
BALs separated according to the presence or absence of accompanying
lower ionization transitions, including measurements of composite
profile shapes, equivalent width (EW), characteristic velocities,
composite variation profiles, and EW variability. We also measure the
correlations between EW and fractional-EW variability for C IV, Si IV,
and Al III. Our measurements reveal the basic correlated changes
between ionization level, kinematics, and column density expected in
accretion-disk wind models; e.g., lines of sight including lower
ionization material generally show deeper and broader C IV troughs
that have smaller minimum velocities and that are less variable. Many
C IV BALs with no accompanying Si IV or Al III BALs may have only mild
or no saturation.
Description:
We utilize spectroscopic observations from the Sloan Digital Sky
Survey-I/II (hereafter SDSS, York et al. 2000AJ....120.1579Y 2000AJ....120.1579Y) and the
Baryon Oscillation Spectroscopic Survey of SDSS-III (hereafter BOSS;
Eisenstein et al. 2011AJ....142...72E 2011AJ....142...72E; Dawson et al.
2013AJ....145...10D 2013AJ....145...10D). We select a sample of quasars for this study
from these 2005 targets that were observed by SDSS between MJD 51,602
(2000 February 28) and 54,557 (2008 January 4) and by BOSS between MJD
55,176 (2009 December 11) and 56,455 (2013 June 12). Observation start
dates correspond to completion of hardware commissioning for both SDSS
and BOSS; post-commissioning observations have the most reliable
spectral calibration.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 148 671 Main-Sample BAL Quasars
table2.dat 125 113 *C IV00 Troughs
table3.dat 246 246 *C IVS0 Troughs
table4.dat 363 95 *C IVSA Troughs
table5.dat 125 271 *C IVs0 Troughs
table6.dat 125 32 *C IVsa Troughs
table7.dat 125 94 *C IVSa Troughs
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Note on table*.dat:
C IV00 indicates C IV BAL troughs with no detection of BAL or mini-BAL
troughs at corresponding velocities in the Si IV and Al III
absorption regions in both epochs
C IVS0 indicates C IV BAL troughs accompanied by a Si IV BAL trough in
either epoch but with no detection of a BAL or mini-BAL trough at
corresponding velocities in the Al III BAL region
C IVSA indicates C IV BAL troughs accompanied by a Si IV BAL and also an
Al III BAL detected at corresponding velocities in either epoch
C IVs0 indicates C IV BAL troughs accompanied by a Si IV mini-BAL
C IVsa indicates C IV BAL troughs accompanied by a Si IV mini-BAL
and also an Al III mini-BAL
C IVSa indicates C IV BAL troughs accompanied by a Si IV BAL and an
Al III mini-BAL
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See also:
J/MNRAS/449/1593 : CIV absorption in BAL QSOs (Baskin+, 2015)
J/MNRAS/454/3962 : 188 CIV BAL QSOs from SDSS DR7 (He+, 2015)
J/ApJ/824/130 : SDSS/BOSS/TDSS CIV BAL quasars (Grier+, 2016)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- ID Quasar identifier (QNNN)
6- 9 A4 --- --- [SDSS]
10- 28 A19 --- SDSS Quasar SDSS identifier (JHHMMSS.ss+DDMMSS.s)
30- 38 F9.5 deg RAdeg Right Ascension in decimal degrees (J2000)
40- 47 F8.5 deg DEdeg Declination in decimal degrees (J2000)
49- 56 F8.6 --- z Redshift
58- 64 F7.5 --- e_z The 1σ uncertainty in z
66- 71 F6.2 mag iMag Absolute i band magnitude for z = 2
73- 76 I4 --- Plate1 First epoch SDSS plate identifier
78- 82 I5 d MJD1 Modified Julian Date of first epoch observation
84- 86 I3 --- Fiber1 First epoch SDSS fiber identifier
88- 96 F9.6 --- SN1 First epoch average Signal-to-Noise (1)
98-101 I4 --- Plate2 Second epoch SDSS plate identifier
103-107 I5 d MJD2 Modified Julian Date of second epoch observation
109-112 I4 --- Fiber2 Second epoch SDSS fiber identifier
114-122 F9.6 --- SN2 Second epoch average Signal-to-Noise (1)
124-128 I5 km/s BI1 First epoch modified "balnicity" (2)
130-132 I3 km/s e_BI1 The 1σ uncertainty in BI1
134-138 I5 km/s BI2 Second epoch modified "balnicity" (2)
140-142 I3 km/s e_BI2 The 1σ uncertainty in BI2
144-148 F5.3 yr Delt Rest-frame timescale
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Note (1): in a 4 Angstrom, resolution element within 1650-1750 Angstroms.
Note (2): Where a=3 and b=0; see Equation 1.
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Byte-by-byte Description of file: table2.dat table5.dat table6.dat table7.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- ID Quasar identifier (QNNN)
6- 12 A7 --- CIV C IV trough identifier (1)
14- 21 F8.1 km/s vmax Maximum velocity
23- 30 F8.1 km/s vmin Minimum velocity
32- 38 F7.1 km/s Delv Velocity width
40- 47 F8.1 km/s vcen1 First epoch weighted centroid velocity (G1)
49- 56 F8.1 km/s vcen2 Second epoch weighted centroid velocity (G1)
58- 62 F5.3 --- dBAL1 First epoch average depth
64- 68 F5.3 --- e_dBAL1 The 1σ uncertainty in dBAL1
70- 74 F5.3 --- dBAL2 Second epoch average depth
76- 80 F5.3 --- e_dBAL2 The 1σ uncertainty in dBAL2
82- 86 F5.2 0.1nm EQ1 First epoch equivalent width (G1)
88- 91 F4.2 0.1nm e_EQ1 The 1σ uncertainty in EQ1
93- 97 F5.2 0.1nm EQ2 Second epoch equivalent width (G1)
99-102 F4.2 0.1nm e_EQ2 The 1σ uncertainty in EQ2
104-109 F6.2 0.1nm DelEW Equivalent width variation
111-114 F4.2 0.1nm e_DelEW The 1σ uncertainty in DelEW
116-120 F5.2 --- Ratio Fractional equivalent variation (2)
122-125 F4.2 --- e_Ratio The 1σ uncertainty in Ratio
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Note (1): Trough identifier of :
table2 : C IV00 (C00-NNN)
table5 : C IVs0 (Cs0-NNN)
table6 : C IVsa (Csa-NN)
table7 : C IVSa (CSa-NN)
Note (2): Where DelEW=ΔEW/.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- ID Quasar identifier (QNNN)
6- 12 A7 --- CIV C IVS0 trough identifier
14- 21 F8.1 km/s vmaxC C IVS0 Maximum velocity
23- 30 F8.1 km/s vminC C IVS0 Minimum velocity
32- 38 F7.1 km/s DelvC C IVS0 Velocity width
40- 47 F8.1 km/s vcen1C First epoch C IVS0 weighted centroid
49- 56 F8.1 km/s vcen2C Second epoch C IVS0 weighted centroid
velocity (G1)
58- 62 F5.3 --- dBAL1C First epoch C IVS0 average depth
64- 68 F5.3 --- e_dBAL1C The 1σ uncertainty in dBAL1C
70- 74 F5.3 --- dBAL2C Second epoch C IVS0 average depth
76- 80 F5.3 --- e_dBAL2C The 1σ uncertainty in dBAL2C
82- 86 F5.2 0.1nm EQ1C First epoch C IVS0 equivalent width (G1)
88- 91 F4.2 0.1nm e_EQ1C The 1σ uncertainty in EQ1C
93- 97 F5.2 0.1nm EQ2C Second epoch C IVS0 equivalent width (G1)
99-102 F4.2 0.1nm e_EQ2C The 1σ uncertainty in EQ2C
104-109 F6.2 0.1nm DelEWC C IVS0 equivalent width variation
111-114 F4.2 0.1nm e_DelEWC The 1σ uncertainty in DelEWC
116-120 F5.2 --- RatioC Fractional C IVS0 equivalent variation (2)
122-125 F4.2 --- e_RatioC The 1σ uncertainty in RatioC
127-133 A7 --- SiIV Si IVS0 trough identifier
135-142 F8.1 km/s vmaxS Si IVS0 Maximum velocity
144-151 F8.1 km/s vminS Si IVS0 Minimum velocity
153-159 F7.1 km/s DelvS Si IVS0 Velocity width
161-168 F8.1 km/s vcen1S First epoch Si IVS0 weighted centroid
velocity (G1)
170-177 F8.1 km/s vcen2S Second epoch Si IVS0 weighted centroid
velocity (G1)
179-183 F5.3 --- dBAL1S First epoch Si IVS0 average depth
185-189 F5.3 --- e_dBAL1S The 1σ uncertainty in dBAL1S
191-195 F5.3 --- dBAL2S Second epoch Si IVS0 average depth
197-201 F5.3 --- e_dBAL2S The 1σ uncertainty in dBAL2S
203-207 F5.2 0.1nm EQ1S First epoch Si IVS0 equivalent width (G1)
209-212 F4.2 0.1nm e_EQ1S The 1σ uncertainty in EQ1S
214-218 F5.2 0.1nm EQ2S Second epoch Si IVS0 equivalent width (G1)
220-223 F4.2 0.1nm e_EQ2S The 1σ uncertainty in EQ2S
225-230 F6.2 0.1nm DelEWS Si IVS0 equivalent width variation
232-235 F4.2 0.1nm e_DelEWS The 1σ uncertainty in DelEWS
237-241 F5.2 --- RatioS Fractional Si IVS0 equivalent variation (2)
243-246 F4.2 --- e_RatioS The 1σ uncertainty in RatioS
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Note (2): Where DelEW = ΔEW/ of C IVSO or Si IVSO.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- ID Quasar identifier (QNNN)
6- 11 A6 --- CIV C IVSA trough identifier
13- 20 F8.1 km/s vmaxC C IVSA Maximum velocity
22- 29 F8.1 km/s vminC C IVSA Minimum velocity
31- 37 F7.1 km/s DelvC C IVSA Velocity width
39- 46 F8.1 km/s vcen1C First epoch C IVSA weighted centroid
velocity (G1)
48- 55 F8.1 km/s vcen2C Second epoch C IVSA weighted centroid
velocity (G1)
57- 61 F5.3 --- dBAL1C First epoch C IVSA average depth
63- 67 F5.3 --- e_dBAL1C The 1σ uncertainty in dBAL1C
69- 73 F5.3 --- dBAL2C Second epoch C IVSA average depth
75- 79 F5.3 --- e_dBAL2C The 1σ uncertainty in dBAL2C
81- 85 F5.2 0.1nm EQ1C First epoch C IVSA equivalent width (G1)
87- 90 F4.2 0.1nm e_EQ1C The 1σ uncertainty in EQ1C
92- 96 F5.2 0.1nm EQ2C Second epoch C IVSA equivalent width (G1)
98-101 F4.2 0.1nm e_EQ2C The 1σ uncertainty in EQ2C
103-108 F6.2 0.1nm DelEWC C IVSA equivalent width variation
110-113 F4.2 0.1nm e_DelEWC The 1σ uncertainty in DelEWC
115-119 F5.2 --- RatioC Fractional C IVSA equivalent variation (2)
121-124 F4.2 --- e_RatioC The 1σ uncertainty in RatioC
126-131 A6 --- SiIV Si IVSA trough identifier
133-140 F8.1 km/s vmaxS Si IVSA Maximum velocity
142-149 F8.1 km/s vminS Si IVSA Minimum velocity
151-157 F7.1 km/s DelvS Si IVSA Velocity width
159-166 F8.1 km/s vcen1S First epoch Si IVSA weighted centroid
velocity (G1)
168-175 F8.1 km/s vcen2S Second epoch Si IVSA weighted centroid
velocity (G1)
177-181 F5.3 --- dBAL1S First epoch Si IVSA average depth
183-187 F5.3 --- e_dBAL1S The 1σ uncertainty in dBAL1S
189-193 F5.3 --- dBAL2S Second epoch Si IVSA average depth
195-199 F5.3 --- e_dBAL2S The 1σ uncertainty in dBAL2S
201-205 F5.2 0.1nm EQ1S First epoch Si IVSA equivalent width (G1)
207-210 F4.2 0.1nm e_EQ1S The 1σ uncertainty in EQ1S
212-216 F5.2 0.1nm EQ2S Second epoch Si IVSA equivalent width (G1)
218-221 F4.2 0.1nm e_EQ2S The 1σ uncertainty in EQ2S
223-228 F6.2 0.1nm DelEWS Si IVSA equivalent width variation
230-233 F4.2 0.1nm e_DelEWS The 1σ uncertainty in DelEWS
235-239 F5.2 --- RatioS Fractional Si IVSA equivalent variation (2)
241-244 F4.2 --- e_RatioS The 1σ uncertainty in RatioS
246-251 A6 --- AiIV Al IIISA trough identifier
253-260 F8.1 km/s vmaxA Al IIISA Maximum velocity
262-269 F8.1 km/s vminA Al IIISA Minimum velocity
271-277 F7.1 km/s DelvA Al IIISA Velocity width
279-286 F8.1 km/s vcen1A First epoch Al IIISA weighted centroid
velocity (G1)
288-295 F8.1 km/s vcen2A Second epoch Al IIISA weighted centroid
velocity (G1)
297-301 F5.3 --- dBAL1A First epoch Al IIISA average depth
303-307 F5.3 --- e_dBAL1A The 1σ uncertainty in dBAL1A
309-313 F5.3 --- dBAL2A Second epoch Al IIISA average depth
315-319 F5.3 --- e_dBAL2A The 1σ uncertainty in dBAL2A
321-325 F5.2 0.1nm EQ1A First epoch Al IIISA equivalent width (G1)
327-330 F4.2 0.1nm e_EQ1A The 1σ uncertainty in EQ1A
332-336 F5.2 0.1nm EQ2A Second epoch Al IIISA equivalent width (G1)
338-341 F4.2 0.1nm e_EQ2A The 1σ uncertainty in EQ2A
343-347 F5.2 0.1nm DelEWA Al IIISA equivalent width variation
349-352 F4.2 0.1nm e_DelEWA The 1σ uncertainty in DelEWA
354-358 F5.2 --- RatioA Fractional Al IIISA equivalent variation (2)
360-363 F4.2 --- e_RatioA The 1σ uncertainty in RatioA
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Note (2): Where DelEW = ΔEW/ of C IVSA, Si IVSA, or Al IIISA.
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Global notes:
Note (G1): Which is the mean velocity where each data point is weighted with its
distance from the normalized continuum level. Units are Angstroms.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 29-Mar-2017