2017MNRAS.468L...6L

Query : 2017MNRAS.468L...6L

2017MNRAS.468L...6L - Mon. Not. R. Astron. Soc., 468, L6-L10 (2017/June-2)

Evidence for photoionization-driven variability in narrow absorption lines.

LU W.-J., LIN Y.-R., QIN Y.-P., HUANG W.-R., PAN C.-J., HUANG H.-Y., YAO M., NONG W.-J., YAO Z.-K., LU M.-M., PAN D.-S., HUANG H.-Q. and HAN Q.-L.

Abstract (from CDS):

In this Letter, we report the discovery of a strong correlation between the variability of narrow absorption lines (NALs) and the ionizing continuum from a two-epoch spectral sample of 40 quasars containing 52 variable C IV λλ1548, 1551 absorption doublets. According to the concordance index, this sample is classified into two subsamples. Subsample I shows an anti-correlation between the variations of absorption lines and the continuum, while Subsample II exhibits a positive correlation. These results imply that these variable C IV λλ1548, 1551 absorption doublets are intrinsic to the corresponding quasars and that their variations are caused primarily by the fluctuations of the ionizing continuum. Based on our analysis, we propose that there might be two kinds of absorption gas: one that is very sensitive to the continuum variations, and another that is not. In addition, we suggest that in many cases the emergence or disappearance of NALs is caused by fluctuations of the ionizing continuum.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: active - quasars: absorption lines - quasars: general - quasars: general

VizieR on-line data: <Available at CDS (J/MNRAS/468/L6): table1.dat>

Simbad objects: 41

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Number of rows : 41
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 LBQS 0049-0012 QSO 00 51 57.2507350584 +00 03 54.786525372   18.45 18.20     ~ 56 0
2 [VV2006] J015017.8+002902 QSO 01 50 17.7101391528 +00 29 02.477089140   19.74 19.42     ~ 43 0
3 SDSS J020629.32+004843.0 QSO 02 06 29.3353676880 +00 48 43.074637596   18.99 18.66     ~ 28 0
4 QSO B0240-0012 QSO 02 43 04.6898192232 +00 00 05.460988716   18.73 18.45     ~ 66 0
5 SDSS J073232.80+435500.4 QSO 07 32 32.7989013696 +43 55 00.383106144   20.03 19.40     ~ 28 0
6 [VV2006] J073406.8+273355 QSO 07 34 06.7495116936 +27 33 55.607728716   17.43 17.17     ~ 36 0
7 [VV2006] J080006.6+265054 QSO 08 00 06.5952905496 +26 50 54.704487120   19.41 19.24     ~ 28 0
8 SDSS J080609.24+141146.4 QSO 08 06 09.2398786296 +14 11 46.450487544   19.09 18.83     ~ 23 0
9 SDSS J080906.87+172955.1 QSO 08 09 06.8809106256 +17 29 55.183043328   19.11 18.78     ~ 29 0
10 [VV2006] J081655.5+455633 QSO 08 16 55.4921030520 +45 56 33.738989316   19.86 19.23     ~ 31 0
11 2MASS J08192958+2322378 QSO 08 19 29.5965243024 +23 22 37.451532144   18.27 18.05     ~ 27 0
12 SDSS J082751.78+132107.2 QSO 08 27 51.7872020976 +13 21 07.237525356   18.05 17.91     ~ 21 0
13 [VV2006] J091621.5+010014 QSO 09 16 21.4662336336 +01 00 15.467142924   19.32 18.99     ~ 35 0
14 [VV2006] J095254.1+021932 QSO 09 52 54.1066693968 +02 19 32.793544560   18.93 18.63     ~ 35 0
15 [VV2006] J100716.7+030438 QSO 10 07 16.6906950432 +03 04 38.749370700   18.57 18.31     ~ 35 0
16 SDSS J103115.69+374849.5 QSO 10 31 15.6868976712 +37 48 49.536143100   19.66 19.44     ~ 24 0
17 SDSS J103842.14+350906.9 QSO 10 38 42.1435556784 +35 09 06.949374984   19.52 19.25     ~ 27 0
18 [VV2006] J104841.0+000042 QSO 10 48 41.0246002560 +00 00 42.837687648   19.62 19.35     ~ 44 0
19 [VV2006] J104923.9+012224 QSO 10 49 23.9459071224 +01 22 24.573991980   18.21 17.87     ~ 35 0
20 SDSS J105207.90+362219.4 QSO 10 52 07.9073035656 +36 22 19.497748044   19.33 19.11     ~ 30 0
21 2MASS J11072603+3851580 QSO 11 07 26.0503335696 +38 51 58.171274244           ~ 17 0
22 [VV2006] J115122.2+020426 QSO 11 51 22.1391218376 +02 04 26.416384032   19.42 18.97 18.635   ~ 44 0
23 [VV2006] J120819.3+035558 QSO 12 08 19.3064468784 +03 55 59.380568184   19.03 18.73     ~ 46 0
24 [VV2006] J123720.9-011316 QSO 12 37 20.8590729888 -01 13 14.987299944   19.50 19.29     ~ 33 0
25 QSO B1246+344 QSO 12 48 29.4603813840 +34 12 31.175129196   18.93 18.71     ~ 35 0
26 [VV2006] J125216.6+052738 QSO 12 52 16.5923498424 +05 27 37.671186636   17.88 17.63     ~ 38 0
27 LBQS 1320+0103 QSO 13 23 33.0412197000 +00 47 50.232781824   18.26 17.98     ~ 38 0
28 [VV2006] J134544.6+002810 QSO 13 45 44.5484260344 +00 28 10.787357244   18.89 18.65     ~ 44 0
29 SDSS J140815.58+060023.2 QSO 14 08 15.5902150344 +06 00 23.213317212   19.65 19.43     ~ 24 0
30 NGC 5548 Sy1 14 17 59.5400291832 +25 08 12.603122268   14.35 13.73     ~ 2895 0
31 [VV2006] J150033.5+003353 QSO 15 00 33.5331090528 +00 33 53.687533608   18.73 18.38     ~ 40 0
32 [VV2006] J160445.9+335759 QSO 16 04 45.9246706680 +33 57 59.128506612   19.93 19.75     ~ 27 0
33 [VV2006] J160614.0+314143 QSO 16 06 13.9895292264 +31 41 43.493411184   19.44 19.18     ~ 32 0
34 SDSS J161336.81+054701.7 QSO 16 13 36.8160796368 +05 47 01.726712988   19.65 19.43     ~ 24 0
35 [VV2006] J161511.3+314728 QSO 16 15 11.3577858696 +31 47 28.343208048   18.33 18.03     ~ 28 0
36 2MASS J16270195+3135491 QSO 16 27 01.9449153576 +31 35 49.177478004   17.31 17.11     ~ 29 0
37 SDSS J162935.69+321009.5 QSO 16 29 35.6913245664 +32 10 09.548413680   19.61 19.36     ~ 26 0
38 SDSS J212943.25+003005.5 QSO 21 29 43.2528314568 +00 30 05.574683088   19.36 19.10     ~ 26 0
39 [VV2006] J213648.1-001547 QSO 21 36 48.1719916800 -00 15 46.643334480   19.64 19.31     ~ 36 0
40 SDSS J222157.97-010331.0 QSO 22 21 57.9779161560 -01 03 31.023323208   18.82 18.38     ~ 28 0
41 SDSS J230034.04-004901.5 QSO 23 00 34.0445616432 -00 49 01.516231308   19.55 19.23     ~ 27 0

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