2014MNRAS.441..886F

Query : 2014MNRAS.441..886F

2014MNRAS.441..886F - Mon. Not. R. Astron. Soc., 441, 886-899 (2014/June-2)

The extent of the MgII absorbing circumgalactic medium of quasars.

FARINA E.P., FALOMO R., SCARPA R., DECARLI R., TREVES A. and KOTILAINEN J.K.

Abstract (from CDS):

We investigate the extent and the properties of the Mgii cool, low-density absorbing gas located in the halo and in the circumgalactic environment of quasars, using a sample of 31 projected quasar pairs with impact parameter pd < 200kpc in the redshift range 0.5 ≲ z ≲ 1.6. In the transverse direction, we detect 18 Mgii absorbers associated with the foreground quasars, while no absorption system originated by the gas surrounding the quasar itself is found along the line of sight. This suggests that the quasar emission induces an anisotropy in the absorbing gas distribution. Our observations indicate that the covering fraction (fC) of Mgii absorption systems with rest-frame equivalent width Wr(λ2796) > 0.3Å ranges from fC ∼ 1.0 at pd ≲ 65kpc to fC ∼ 0.2 at pd ≳ 150kpc, and appears to be higher than that for galaxies. Our findings support a scenario where the luminosity/mass of the host galaxies affect the extent and the richness of the absorbing Mgii circumgalactic medium.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

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

Simbad objects: 37

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Number of rows : 37
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] J003823.7-291259 QSO 00 38 23.6790908832 -29 12 59.605699644   19.90       ~ 6 0
2 [VV2006] J003823.8-291311 QSO 00 38 23.7609785664 -29 13 11.938233000   19.98       ~ 6 0
3 [VV2006] J004757.3+144741 QSO 00 47 57.2607201768 +14 47 41.918685360   19.79 19.49     ~ 25 0
4 SDSS J004757.87+144744.7 QSO 00 47 57.8806159680 +14 47 44.699409960   19.59 19.22     ~ 17 0
5 [VV2006] J004950.9+000331 QSO 00 49 50.9137919952 +00 03 30.166190820   19.90 19.60     ~ 23 0
6 [VV2006] J004952.0+000345 QSO 00 49 51.9877432200 +00 03 44.160333192   18.5 19.21 18.7   ~ 26 0
7 [VV2006] J010348.2+150157 QSO 01 03 48.1437923976 +15 01 57.292336632   19.66 19.31     ~ 25 0
8 [VV2006] J010349.3+150142 QSO 01 03 49.2986640984 +15 01 42.662096868   17.88 17.72     ~ 31 0
9 [VV2006] J013500.1-004113 QSO 01 35 00.0965799960 -00 41 13.363733976   19.48 19.16     ~ 24 0
10 [VV2006] J013500.8-004054 QSO 01 35 00.8261305992 -00 40 54.357188304   19.46 19.16     ~ 31 0
11 [VV2006] J014630.1+001521 QSO 01 46 30.1448869056 +00 15 21.359242872   19.99 19.86     ~ 19 0
12 [VV2006] J014630.9+001531 QSO 01 46 30.9583954152 +00 15 31.641270408   18.5 18.92 18.3   ~ 26 0
13 SDSS J021552.53+011000.1 QSO 02 15 52.5400022352 +01 10 00.166172196   19.88 19.64     ~ 19 0
14 SDSS J021553.71+010953.9 QSO 02 15 53.7265638240 +01 09 53.925034716   20.25 20.03     ~ 23 0
15 [VV2006] J021951.7-004435 QSO 02 19 51.7434348552 -00 44 35.327241492   19.64 19.36     ~ 27 0
16 [VV2006] J021953.0-004434 QSO 02 19 53.0397681288 -00 44 34.258789716   19.26 19.09     ~ 29 0
17 [VV2006] J022158.8-001044 QSO 02 21 58.7808635760 -00 10 44.358057084   20.37 20.10     ~ 23 0
18 SDSS J022158.83-001052.6 QSO 02 21 58.8410776368 -00 10 52.512003516   20.57 20.18     ~ 23 0
19 SDSS J022947.12-005332.4 QSO 02 29 47.1273260568 -00 53 32.499474360   20.67 20.52     ~ 21 0
20 SDSS J022948.18-005333.0 QSO 02 29 48.1896462288 -00 53 33.038235924   20.14 20.03     ~ 21 0
21 SDSS J024602.34-003221.5 QSO 02 46 02.3509209624 -00 32 21.662166048   20.37 20.15     ~ 18 0
22 US 3133 QSO 02 46 03.6838440216 -00 32 11.815175976   19.01 18.73     ~ 44 0
23 SDSS J033853.79-002333.5 QSO 03 38 53.7981191928 -00 23 33.635849424   20.44 20.10     ~ 16 0
24 SDSS J033854.21-002316.9 QSO 03 38 54.2210530656 -00 23 16.976962464   20.57 20.25     ~ 16 0
25 QSO J0836+4841B QSO 08 36 49.4581720896 +48 41 50.103142836   19.29 19.14     ~ 8 1
26 SDSS J162446.80+493042.0 QSO 16 24 46.8088187904 +49 30 41.954779260   20.01 19.89     ~ 13 0
27 [VV2006] J162449.6+493032 QSO 16 24 49.6049468592 +49 30 32.733696960   18.4 19.41 18.3   ~ 20 0
28 SDSS J162607.14+140027.5 QSO 16 26 07.1532974928 +14 00 27.581937300   20.58 20.10     ~ 14 0
29 SDSS J162608.27+140037.3 QSO 16 26 08.2815689568 +14 00 37.429493652   20.06 19.93     ~ 19 0
30 SDSS J164145.28+273622.8 QSO 16 41 45.2874995832 +27 36 22.942601748   18.8 19.59 18.8   ~ 15 0
31 SDSS J164145.62+273601.5 QSO 16 41 45.6221586240 +27 36 01.627561728   19.30 19.02     ~ 19 0
32 FIRST J220644.4-003906 QSO 22 06 44.4752556888 -00 39 06.141648600   19.66 19.33     ~ 23 0
33 SDSS J220644.59-003853.2 QSO 22 06 44.5876777872 -00 38 53.145526992   19.79 19.62     ~ 22 0
34 2MASS J22590246+0032202 QSO 22 59 02.3802922704 +00 32 21.733804464   19.98 19.45     ~ 23 0
35 SDSS J225902.90+003244.1 QSO 22 59 02.9065679664 +00 32 44.053041228   19.1 20.04 19.3   ~ 21 0
36 QSO B2350-011 QSO 23 53 13.6304926656 -00 50 23.228313396   19.75 19.53     ~ 31 0
37 SDSS J235315.00-005034.8 QSO 23 53 15.0014031840 -00 50 34.914485688   19.85 19.60     ~ 19 0

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