2006MNRAS.365.1057N

Query : 2006MNRAS.365.1057N

2006MNRAS.365.1057N - Mon. Not. R. Astron. Soc., 365, 1057-1066 (2006/February-1)

A new sample of broad absorption-line quasars exhibiting the ghost of Lyman α.

NORTH M., KNIGGE C. and GOAD M.

Abstract (from CDS):

We have searched the broad absorption-line quasar (BAL QSO) sample presented recently by Reichard et al. for objects exhibiting the so-called `ghost of Lyman α'. This ghost manifests as a hump near -5900km/s in the troughs of the broad absorption lines and provides strong evidence for the importance of line driving in powering the outflows from BAL QSOs. Of the 224 sample BAL QSOs selected from the Sloan Digital Sky Survey Early Data Release, 198 satisfy our redshift constraints and 58 show clear evidence of multiple-trough (MT) structure in the CIV 1550Åline. A composite spectrum constructed from this MT sample already shows evidence for a ghost feature. Narrowing our classification scheme further, we define a set of 36 objects that individually show evidence of a ghost feature, and then apply further cuts to arrive at a final `best sample' that contains our seven strongest ghost candidates. A further five objects show evidence for a ghost feature that is almost strong enough to merit inclusion in our best sample. Despite its limited size, our best sample more than doubles the number of known BAL QSOs with clear ghost signatures and should make an excellent basis for detailed follow-up studies.

Abstract Copyright: 2005 The Authors. Journal compilation © 2005 RAS

Journal keyword(s): stars: winds, outflows - galaxies: active - quasars: absorption lines - quasars: general

Simbad objects: 61

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Number of rows : 61
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 [VV2006] J000056.9-010409 QSO 00 00 56.8929732840 -01 04 09.829932492   20.80 20.30     ~ 24 0
2 [VV2006] J003552.0+005726 QSO 00 35 51.9855103248 +00 57 26.468691192   19.57 19.36     ~ 39 0
3 QSO B0038-011 QSO 00 40 41.3964354528 -00 55 37.326990792   18.53 18.29     ~ 33 0
4 [VV2006] J004732.7+002111 QSO 00 47 32.7326395512 +00 21 11.390771736   18.99 18.79     ~ 41 0
5 LBQS 0051-0019 QSO 00 53 55.1600874096 -00 03 09.345187476   18.87 18.55     ~ 59 0
6 [VV2006] J010612.2+001919 QSO 01 06 12.2196887376 +00 19 20.141093856   19.62 19.04     ~ 38 0
7 [VV2006] J010616.0+001524 QSO 01 06 16.0578679944 +00 15 24.017682096   20.65 20.33     ~ 32 0
8 LBQS 0109-0128 QSO 01 12 27.6059783400 -01 12 21.714645744   18.63 18.37     ~ 64 0
9 [VV2006] J012913.7+011427 QSO 01 29 13.7078842248 +01 14 28.057224732   19.89 19.49     ~ 32 0
10 [VV2000] J015048.9+004126 QSO 01 50 48.8308399416 +00 41 26.222012304   19.98 19.11     ~ 53 0
11 [VV2006] J020006.3-003710 QSO 02 00 06.3103700592 -00 37 09.824425104   19.21 18.76     ~ 38 0
12 [VV2006] J023252.8-001350 QSO 02 32 52.8070323336 -00 13 51.123138024   19.32 19.10     ~ 39 0
13 QSO J0242+0049 QSO 02 42 21.8739785496 +00 49 12.682463700   18.81 18.48     ~ 61 0
14 [VV2006] J025042.4+003537 QSO 02 50 42.4551732456 +00 35 36.722245236   19.95 19.26     ~ 48 0
15 [VV2006] J025747.7-000503 QSO 02 57 47.7510308280 -00 05 03.016721544   20.86 20.52     ~ 26 0
16 [VV2006] J031227.2-003446 QSO 03 12 27.1334182056 -00 34 46.221913812   19.72 19.49     ~ 34 0
17 [VV2006] J032246.8-005148 QSO 03 22 46.8202129536 -00 51 48.989287980   19.76 19.52     ~ 27 0
18 [VV2006] J033048.5-002819 QSO 03 30 48.5064532776 -00 28 19.653927276   20.24 19.79     ~ 30 0
19 [VV2006] J100809.6-000210 QSO 10 08 09.6394708656 -00 02 09.994452252   19.95 19.67     ~ 32 0
20 [VV2006] J104109.8+001051 QSO 10 41 09.8486467440 +00 10 51.825387144   19.80 19.50     ~ 41 0
21 [VV2006] J104152.5-001103 QSO 10 41 52.6179469680 -00 11 02.112906984   19.58 19.37     ~ 36 0
22 [VV96] J104233.9+010207 QSO 10 42 33.8603103960 +01 02 06.270533124   19.31 19.09     ~ 34 0
23 [VV2006] J104841.0+000042 QSO 10 48 41.0246002560 +00 00 42.837687648   19.62 19.35     ~ 44 0
24 QSO B1058.1+0052 QSO 11 00 41.1944060688 +00 36 32.014828512   17.7 18.72 18.5   ~ 42 0
25 [VV2006] J110623.5-004325 QSO 11 06 23.5213245960 -00 43 26.027521752   20.09 19.32     ~ 33 0
26 QSO J1107+0003 QSO 11 07 36.6754543512 +00 03 29.475462060   19.16 18.81     ~ 45 0
27 [VV2006] J113544.3+001118 QSO 11 35 44.3292936504 +00 11 18.792483504   21.25 20.71     ~ 27 0
28 [VV2006] J120657.0-002538 QSO 12 06 57.0139874496 -00 25 37.817416344   19.51 19.31     ~ 26 0
29 [VV2006] J121803.2+001237 QSO 12 18 03.2753260152 +00 12 36.943560720   19.19 18.96     ~ 27 0
30 [VV2006] J122228.4-011011 QSO 12 22 28.4041377024 -01 10 11.066475396   20.08 19.69     ~ 30 0
31 [VV2006] J123124.7+004719 QSO 12 31 24.7082333232 +00 47 19.232738628   19.84 19.52     ~ 27 0
32 [VV2006] J123824.9+001834 QSO 12 38 24.9046721856 +00 18 34.648120872   19.81 19.54     ~ 32 0
33 [VV2006] J123947.7+002516 QSO 12 39 47.6118677448 +00 25 16.310880048   21.01 20.47     ~ 27 0
34 [VV2006] J125241.5-002040 QSO 12 52 41.5503913536 -00 20 40.650197352   19.11 18.87     ~ 31 0
35 [VV2006] J130035.3-003928 QSO 13 00 35.2938869784 -00 39 28.344513852   20.69 19.90     ~ 23 0
36 QSO J1302-0037 QSO 13 02 08.2750171176 -00 37 31.590622596   18.88 18.42     ~ 32 0
37 [VV2000] J130348.9+002010 QSO 13 03 48.9439829880 +00 20 10.472010216   21.33 20.00     ~ 46 0
38 LBQS 1314+0116 QSO 13 17 14.2192840512 +01 00 13.029343632   18.79 18.51     ~ 66 0
39 QSO J1323-0038 QSO 13 23 04.5847205784 -00 38 56.517086580   18.94 18.58     ~ 48 0
40 [VV2006] J134145.1-003630 QSO 13 41 45.1296091560 -00 36 31.048375392   19.99 19.45     ~ 36 0
41 [VV2006] J134544.6+002810 QSO 13 45 44.5484260344 +00 28 10.787357244   18.89 18.65     ~ 44 0
42 [VV2006] J134808.8+003723 QSO 13 48 08.7970756944 +00 37 23.295172728   20.89 20.01     ~ 34 0
43 [VV2006] J142050.4-002553 QSO 14 20 50.3360187288 -00 25 53.087829312   20.48 19.81     ~ 29 0
44 [VV2006] J142232.3-003044 QSO 14 22 32.3860526112 -00 30 43.877684340   20.23 19.88     ~ 31 0
45 [VV2006] J143022.4-002044 QSO 14 30 22.4714145576 -00 20 45.263809824   20.90 20.25     ~ 32 0
46 [VV2006] J143054.0-003627 QSO 14 30 54.0356355600 -00 36 27.347565744   22.47 21.10     ~ 23 0
47 [VV2006] J145045.4-004359 QSO 14 50 45.4235033448 -00 44 00.318139872   18.89 18.67     ~ 38 0
48 [VV2006] J145913.8+000215 QSO 14 59 13.7194781160 +00 02 15.950271336   19.18 18.94     ~ 38 0
49 QSO J1516+0029 QSO 15 16 36.7913032776 +00 29 40.485994404   19.01 18.29     ~ 39 0
50 [VV2006] J170056.9+602639 QSO 17 00 56.8512249216 +60 26 39.775733592   19.40 19.05     ~ 24 0
51 [VV2006] J170903.0+594530 QSO 17 09 03.0525831960 +59 45 30.737655252   18.5 19.19 18.8   ~ 26 0
52 [VV2006] J170931.0+630356 QSO 17 09 31.0071698568 +63 03 57.150258048   18.93 18.47     ~ 28 0
53 [VV2006] J170951.0+570314 QSO 17 09 51.0294456912 +57 03 13.743868608   21.26 20.74     ~ 22 0
54 [VV2006] J171331.0+610707 QSO 17 13 30.9873089712 +61 07 07.776736932   19.41 19.19     ~ 22 0
55 [VV2006] J171944.8+554408 QSO 17 19 44.7643574400 +55 44 08.484602640   21.51 20.63     ~ 23 0
56 [VV2006] J171949.9+532132 QSO 17 19 49.9253940936 +53 21 32.839775352   17.7 18.51 18.0   ~ 29 0
57 [VV2006] J172001.4+621245 QSO 17 20 01.3012072632 +62 12 45.752811912   19.95 19.62     ~ 28 0
58 [VV2006] J172012.4+545601 QSO 17 20 12.4051722408 +54 56 01.157149464   18.93 18.69     ~ 26 0
59 [VV2006] J173911.5+565550 QSO 17 39 11.5221654144 +56 55 50.975016888   19.66 19.43     ~ 27 0
60 SDSS J232205.45+004551.0 QSO 23 22 05.4547252992 +00 45 51.125644044   20.42 20.22     ~ 26 0
61 QSO B2342+007 QSO 23 45 06.3143638176 +01 01 35.569591824   19.73 19.62     ~ 37 0

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