2010ApJ...714.1521C


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.10CET04:30:19

2010ApJ...714.1521C - Astrophys. J., 714, 1521-1541 (2010/May-2)

An empirical characterization of extended cool gas around galaxies using Mg II absorption features.

CHEN H.-W., HELSBY J.E., GAUTHIER J.-R., SHECTMAN S.A., THOMPSON I.B. and TINKER J.L.

Abstract (from CDS):

We report results from a survey of Mg II absorbers in the spectra of background quasi-stellar objects (QSOs) that are within close angular distances to a foreground galaxy at z < 0.5, using the Magellan Echellette Spectrograph. We have established a spectroscopic sample of 94 galaxies at a median redshift of 〈z〉 = 0.24 in fields around 70 distant background QSOs (zQSO > 0.6), 71 of which are in an "isolated" environment with no known companions and located at ρ ≲ 120 h–1 kpc from the line of sight of a background QSO. The rest-frame absolute B-band magnitudes span a range from MB- 5log h = -16.4 to MB- 5log h = -21.4 and rest-frame BAB- RAB colors range from BAB- RAB≈ 0 to BAB- RAB≈ 1.5. Of these "isolated" galaxies, we find that 47 have corresponding Mg II absorbers in the spectra of background QSOs and rest-frame absorption equivalent width Wr(2796) = 0.1-2.34 Å, and 24 do not give rise to Mg II absorption to sensitive upper limits. Our analysis shows that (1) Wr(2796) declines with increasing distance from "isolated" galaxies but shows no clear trend in "group" environments; (2) more luminous galaxies possess more extended Mg II absorbing halos with the gaseous radius scaled by B-band luminosity according to Rgas= 75 x(LB/LB*)(0.35±0.03) h–1 kpc; (3) there is little dependence between the observed absorber strength and galaxy intrinsic colors; and (4) within Rgas, we find a mean covering fraction of 〈κ0.3〉 ≈ 70% for absorbers of Wr(2796) ≥ 0.3 Å and 〈κ0.1〉 ≈ 80% for absorbers of Wr(2796) ≥ 0.1 Å. The results confirm that extended Mg II absorbing halos are a common and generic feature around ordinary galaxies and that the gaseous radius is a fixed fraction of the dark matter halo radius. The lack of correlation between Wr(2796) strength and galaxy colors suggests a lack of physical connection between the origin of extended Mg II halos and recent star formation history of the galaxies. Finally, we discuss the total gas mass in galactic halos as traced by Mg II absorbers. We also compare our results with previous studies.

Abstract Copyright:

Journal keyword(s): cosmology: observations - intergalactic medium - quasars: absorption lines

VizieR on-line data: <Available at CDS (J/ApJ/714/1521): table1.dat table2.dat table3.dat>

Simbad objects: 168

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Number of rows : 168

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 SDSS J003339.66-005518.3 G 00 33 39.663 -00 55 18.39           ~ 2 0
2 SDSS J003339.85-005522.3 G 00 33 39.851 -00 55 22.21   19.44       ~ 5 0
3 [VV2006] J003340.2-005525 QSO 00 33 40.2155349420 -00 55 25.579741605   18.10 17.82     ~ 27 0
4 SDSS J003341.47-005522.8 G 00 33 41.475 -00 55 22.82           ~ 2 0
5 [VV2006] J003407.3-085451 QSO 00 34 07.3509488122 -08 54 52.121917486   17.8 18.37 18.0   ~ 18 0
6 SDSS J003407.77-085453.2 G 00 34 07.778 -08 54 53.28   22.41       ~ 4 0
7 SDSS J003412.84-010019.8 G 00 34 12.848 -01 00 19.81   21.68       ~ 4 0
8 [VV2006] J003413.1-010026 QSO 00 34 13.0453963499 -01 00 26.964070890   17.37 17.11     ~ 25 0
9 SDSS J003414.49-005927.5 G 00 34 14.4929737297 -00 59 27.579746490           ~ 2 0
10 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10608 1
11 [VV2006] J010135.9-005008 QSO 01 01 35.8507803291 -00 50 09.092087964   17.7 19.23 18.4   ~ 24 0
12 SDSS J010136.51-005016.4 G 01 01 36.518 -00 50 16.44   20.91       ~ 4 0
13 SDSS J010155.80-084408.7 G 01 01 55.802 -08 44 08.75   21.08       ~ 4 0
14 [VV2006] J010156.3-084402 QSO 01 01 56.3119027036 -08 44 01.758135571   18.50 18.19 17.92   ~ 20 0
15 SDSS J010351.82+003740.7 G 01 03 51.821 +00 37 40.75   22.59       ~ 4 0
16 [VV2006] J010352.5+003740 QSO 01 03 52.4667335338 +00 37 39.799167261   18.46 18.16     ~ 36 0
17 LBQS 0102-0106 QSO 01 05 08.1380515629 -00 50 41.292989211   17.7 18.07 17.9   ~ 32 0
18 [VV2006] J021558.4-011135 QSO 02 15 58.4082870293 -01 11 35.917006730   18.19 18.02     ~ 24 0
19 [NCK2013] SDSS J021558.40-011135.79 0.21030 G 02 15 58.8505344980 -01 11 31.263391305   20.13       ~ 4 0
20 SDSS J022949.96-074255.8 G 02 29 49.969 -07 42 55.89   22.08       ~ 4 0
21 [VV2006] J022950.3-074256 QSO 02 29 50.3141451501 -07 42 56.722382171   19.27 19.03     ~ 17 0
22 QSO B0238-0058 Sy1 02 41 26.7134571074 -00 45 26.262131202   18.71 18.52     ~ 29 0
23 SDSS J024127.74-004517.0 G 02 41 27.749 -00 45 17.05           ~ 3 0
24 SDSS J032230.27+003712.7 G 03 22 30.273 +00 37 12.71           ~ 2 0
25 SDSS J032232.55+003644.6 G 03 22 32.550 +00 36 44.67   22.48       ~ 4 0
26 2SLAQ J032232.57+003649.0 QSO 03 22 32.5823898105 +00 36 49.128169602   18.9 19.15 18.8   ~ 12 0
27 GD 50 WD* 03 48 50.1861716368 -00 58 32.290158840 12.596 13.787 14.063 14.210 14.388 DA1.2 231 0
28 SDSS J035241.99+001317.1 G 03 52 41.996 +00 13 17.13   22.54       ~ 4 0
29 [VV2006] J035242.1+001307 QSO 03 52 42.1138254827 +00 13 07.317705413   19.38 19.01     ~ 19 0
30 [VV2006] J040404.0-060714 QSO 04 04 04.0819570316 -06 07 14.068172270   19.25 18.87     ~ 15 0
31 SDSS J040404.51-060709.4 G 04 04 04.515 -06 07 09.44           ~ 2 0
32 SDSS J074527.07+191959.9 G 07 45 27.074 +19 19 59.98           ~ 1 0
33 SDSS J074527.21+192003.8 G 07 45 27.213 +19 20 03.85           ~ 2 0
34 [VV2006] J074528.2+191952 QSO 07 45 28.1442259736 +19 19 52.652732969   18.03 17.88     ~ 19 0
35 SDSS J075001.33+161301.9 G 07 50 01.336 +16 13 01.90   21.30       ~ 4 0
36 SDSS J075001.84+161305.0 QSO 07 50 01.8447030977 +16 13 05.034857229   18.68 18.35     ~ 14 0
37 2MASS J07545004+1849528 QSO 07 54 50.0467074783 +18 49 52.853435417   18.38 18.19     ~ 15 0
38 SDSS J075450.10+185005.2 G 07 54 50.104 +18 50 05.27   21.25       ~ 4 0
39 SDSS J075525.13+172825.7 G 07 55 25.132 +17 28 25.78   20.57       ~ 4 0
40 2MASS J07552547+1728362 QSO 07 55 25.5010973115 +17 28 36.565515856   18.86 18.45     ~ 15 0
41 2MASS J08000456+1849350 QSO 08 00 04.5444919632 +18 49 35.152761883   18.32 18.08     ~ 16 0
42 SDSS J080005.11+184933.2 G 08 00 05.114 +18 49 33.28   20.76       ~ 4 0
43 [VV2006] J082340.2+074801 QSO 08 23 40.1726063812 +07 48 01.698141127   18.54 18.34     ~ 17 0
44 SDSS J082340.55+074751.0 G 08 23 40.557 +07 47 51.06   19.74       ~ 4 0
45 SDSS J083218.54+043337.7 G 08 32 18.545 +04 33 37.79           ~ 2 0
46 SDSS J083218.75+043346.5 G 08 32 18.759 +04 33 46.57           ~ 2 0
47 [VV2006] J083220.7+043416 QSO 08 32 20.7414083893 +04 34 16.791859856   18.34 18.12     ~ 22 0
48 SDSS J083221.59+043359.7 G 08 32 21.590 +04 33 59.72           ~ 2 0
49 [VV2006] J084119.7+012621 QSO 08 41 19.7597406345 +01 26 21.769005579   18.39 18.19     ~ 18 0
50 SDSS J084120.58+012628.8 G 08 41 20.589 +01 26 28.85   21.51       ~ 4 0
51 GAMA 278433 G 08 44 55.596 +00 47 18.16   19.71       ~ 6 0
52 [VV2006] J084456.0+004709 QSO 08 44 56.0759646097 +00 47 08.943955314   17.6 18.45 18.0   ~ 19 0
53 [VV2006] J085827.0+022604 QSO 08 58 26.9188067026 +02 26 04.495536450   18.24 17.94     ~ 19 0
54 SDSS J085829.89+022616.0 G 08 58 29.890 +02 26 16.05   19.34       ~ 4 0
55 SDSS J090519.02+084933.6 G 09 05 19.021 +08 49 33.68   21.66       ~ 4 0
56 SDSS J090519.61+084932.2 G 09 05 19.615 +08 49 32.20   21.91       ~ 4 0
57 [VV2006] J090519.7+084917 QSO 09 05 19.7101725253 +08 49 17.360561636   18.66 18.42     ~ 16 0
58 SDSS J091845.09+060202.9 G 09 18 45.094 +06 02 02.91   19.98       ~ 4 0
59 SDSS J091845.69+060220.5 G 09 18 45.697 +06 02 20.54           ~ 2 0
60 [VV2006] J091845.9+060226 QSO 09 18 45.9239976189 +06 02 26.146266435   17.94 17.74     ~ 23 0
61 [VV2006] J093251.8+073729 QSO 09 32 51.8323164508 +07 37 29.039919153   18.02 17.76     ~ 22 0
62 SDSS J093252.23+073731.5 G 09 32 52.239 +07 37 31.59   21.42       ~ 4 0
63 [VV2006] J093537.0+112408 QSO 09 35 36.9943376002 +11 24 08.005449279   18.56 18.32     ~ 17 0
64 SDSS J093537.23+112410.6 G 09 35 37.239 +11 24 10.65   21.35       ~ 4 0
65 [VV2006] J100807.5+014449 QSO 10 08 07.5145770590 +01 44 49.083783707   18.01 17.56     ~ 21 0
66 2dFGRS TGN422Z179 G 10 08 10.597 +01 44 46.15   19.006   17.787   ~ 5 0
67 [VV2006] J100906.3+023555 QSO 10 09 06.3500846829 +02 35 55.367143396   17.36 17.07     ~ 20 0
68 SDSS J100906.92+023557.8 G 10 09 06.921 +02 35 57.84   20.70       ~ 4 0
69 LBQS 1019+0147 QSO 10 22 18.9949610570 +01 32 18.808374473   16.98 16.82     ~ 36 0
70 2dFGRS TGN424Z103 G 10 22 20.706 +01 31 43.50   19.064   17.656   ~ 6 0
71 SDSS J103605.25+015654.8 G 10 36 05.254 +01 56 54.90   20.00       ~ 4 0
72 2QZ J103607.4+015658 QSO 10 36 07.5222171001 +01 56 59.018116741   19.22 18.99     ~ 23 0
73 SDSS J103836.38+095143.6 G 10 38 36.389 +09 51 43.66   21.26       ~ 4 0
74 [VV2006] J103836.5+095139 QSO 10 38 36.4982295743 +09 51 38.915972936   18.48 18.15     ~ 19 0
75 SDSS J112016.64+093317.9 G 11 20 16.642 +09 33 17.92   21.67       ~ 4 0
76 [VV2006] J112016.7+093323 QSO 11 20 16.6483228145 +09 33 23.540504234   18.32 18.00     ~ 20 0
77 SDSS J113756.74+085022.3 G 11 37 56.747 +08 50 22.35   21.76       ~ 4 0
78 [VV2006] J113757.0+085016 QSO 11 37 57.0249116274 +08 50 17.181666204   18.77 18.49     ~ 18 0
79 [VV2006] J114144.6+080615 QSO 11 41 44.6321149763 +08 06 14.793411328   18.67 18.37     ~ 15 0
80 SDSSCGB 34141.1 G 11 41 44.829 +08 05 54.09   20.12       ~ 5 0
81 SDSSCGB 34141.4 G 11 41 45.151 +08 06 05.27   21.24       ~ 5 0
82 LBQS 1145+0235 QSO 11 48 30.1251853192 +02 18 29.783086339   17.91 17.67     ~ 24 0
83 SDSS J114830.93+021807.9 G 11 48 30.936 +02 18 07.92           ~ 2 0
84 SDSS J114831.01+021803.1 G 11 48 31.011 +02 18 03.11           ~ 1 0
85 SDSS J120931.60+004546.2 G 12 09 31.602 +00 45 46.24   21.86       ~ 4 0
86 2MASS J12093225+0045559 QSO 12 09 32.2584849871 +00 45 55.902469377   17.81 17.35     ~ 10 0
87 SDSS J121347.08+000141.2 G 12 13 47.084 +00 01 41.26           ~ 2 0
88 SDSS J121347.14+000136.6 G 12 13 47.145 +00 01 36.63           ~ 3 0
89 [VV2006] J121347.6+000129 QSO 12 13 47.5333063753 +00 01 30.032086477   18.42 18.25     ~ 33 1
90 [VV2006] J122115.4-020253 QSO 12 21 15.3294374132 -02 02 53.331811056   17.80 17.63     ~ 22 0
91 SDSS J122115.83-020259.3 G 12 21 15.8467178501 -02 02 59.609619028           ~ 2 0
92 2MASS J12573917+1448061 QSO 12 57 39.2083009091 +14 48 06.175181323   18.50 18.32     ~ 14 0
93 [VV2000] J130554.1+014930 QSO 13 05 54.1646796900 +01 49 29.878490436   17.91 17.72     ~ 33 0
94 SDSS J130555.48+014928.6 G 13 05 55.487 +01 49 28.62   20.30       ~ 4 0
95 2dFGRS TGN395Z184 BiC 13 05 57.0434416106 +01 49 22.292411380   19.196   17.737   ~ 6 0
96 SDSS J132757.22+101135.9 G 13 27 57.228 +10 11 35.97   21.63       ~ 4 0
97 SDSS J132757.40+101141.7 QSO 13 27 57.4069240997 +10 11 41.754969966   18.51 18.21     ~ 10 0
98 SDSS J132829.30+080003.1 G 13 28 29.305 +08 00 03.16           ~ 2 0
99 SDSS J132830.61+080005.2 G 13 28 30.616 +08 00 05.21           ~ 2 0
100 2MASS J13283106+0759419 QSO 13 28 31.0740558421 +07 59 42.006077439   18.43 18.06     ~ 13 0
101 SDSS J132831.14+075923.8 G 13 28 31.140 +07 59 23.89           ~ 2 0
102 SDSS J132831.54+075942.9 G 13 28 31.543 +07 59 42.99   20.64       ~ 4 0
103 SDSS J132832.73+075952.5 G 13 28 32.731 +07 59 52.54   20.15       ~ 4 0
104 QSO B1336+0037 QSO 13 39 04.3467562107 +00 22 21.678851299   18.19 17.91     ~ 28 0
105 SDSS J133905.85+002225.4 G 13 39 05.855 +00 22 25.46           ~ 2 0
106 [NCK2013] SDSS J140619.61+130106.82 0.17480 G 14 06 18.3431098325 +13 01 43.643803228   19.07       ~ 4 0
107 [VV2006] J140619.6+130107 QSO 14 06 19.5915889264 +13 01 06.806179254   18.66 18.40     ~ 17 0
108 SDSS J140619.93+130105.2 G 14 06 19.933 +13 01 05.24   20.65       ~ 4 0
109 [VV2006] J142556.4-001818 QSO 14 25 56.3905804028 -00 18 18.734546811   19.02 18.76     ~ 20 0
110 2MASX J14260000-0018181 G 14 26 00.0425192513 -00 18 18.076992844   17.747   16.173   ~ 8 0
111 QSO B1429+1008 QSO 14 32 16.7810484132 +09 55 19.238694993   17.59 17.44     ~ 22 0
112 SDSS J143216.96+095522.2 G 14 32 16.968 +09 55 22.20   21.89       ~ 4 0
113 [VV2006] J144033.8+044831 QSO 14 40 33.8262318275 +04 48 30.971670643   17.2 18.52 18.0   ~ 20 0
114 SDSS J150339.61+064235.0 G 15 03 39.614 +06 42 35.03   21.09       ~ 4 0
115 2MASS J15033996+0642597 QSO 15 03 39.9911397962 +06 42 59.959028305   18.61 18.39     ~ 12 0
116 SDSS J150340.14+064308.1 G 15 03 40.148 +06 43 08.10   21.80       ~ 4 0
117 SDSS J151228.24-011216.1 G 15 12 28.248 -01 12 16.10   19.88       ~ 4 0
118 [VV2006] J151228.8-011222 QSO 15 12 28.8355944935 -01 12 22.978292730   18.53 18.23     ~ 19 0
119 SDSS J151536.18+334743.6 G 15 15 36.182 +33 47 43.65           ~ 1 0
120 [VV2006] J151541.2+334739 QSO 15 15 41.2327872933 +33 47 39.460500221   19.01 18.97     ~ 21 0
121 SDSS J153112.76+091119.7 G 15 31 12.765 +09 11 19.73   22.02       ~ 4 0
122 2MASS J15311298+0911389 QSO 15 31 12.9769196849 +09 11 38.703629064   18.50 18.18     ~ 10 0
123 SDSS J153113.00+091127.0 G 15 31 13.008 +09 11 27.02   22.03       ~ 4 0
124 [VV2006] J153715.3+023049 QSO 15 37 15.3422093999 +02 30 49.807755540   17.70 17.58     ~ 22 0
125 SDSS J153715.67+023056.4 G 15 37 15.672 +02 30 56.40   20.27       ~ 4 0
126 [VV2006] J155336.5+053423 QSO 15 53 36.4673602704 +05 34 24.007460505   18.68 18.42     ~ 18 0
127 SDSS J155336.77+053438.2 G 15 53 36.772 +05 34 38.23   20.41       ~ 4 0
128 SDSS J155556.55-003615.5 G 15 55 56.550 -00 36 15.56   21.81       ~ 4 0
129 [VV2006] J155557.0-003608 QSO 15 55 57.0654386364 -00 36 08.434807191   18.08 17.84     ~ 21 0
130 [VV2006] J160749.3-002219 QSO 16 07 49.3379877069 -00 22 19.918617932   18.08 17.73     ~ 16 0
131 SDSS J160749.52-002228.4 G 16 07 49.525 -00 22 28.41   21.34       ~ 4 0
132 SDSS J160905.42+071337.2 QSO 16 09 05.4204204900 +07 13 37.279447809   18.37 18.26     ~ 10 0
133 SDSS J160906.34+071330.6 G 16 09 06.348 +07 13 30.66   20.10       ~ 4 0
134 NAME HVC Complex C HVC 16 34.8 +63 07           ~ 226 1
135 SDSS J204303.54-010139.0 G 20 43 03.540 -01 01 39.05   19.49       ~ 4 0
136 [VV2006] J204303.6-010126 QSO 20 43 03.5407737736 -01 01 26.016200702   17.77 17.44     ~ 19 0
137 SDSS J204304.34-010137.9 G 20 43 04.347 -01 01 37.91   20.44       ~ 4 0
138 SDSS J204431.32+011304.9 G 20 44 31.325 +01 13 04.97           ~ 2 0
139 [VV2006] J204431.5+011312 QSO 20 44 31.4586184208 +01 13 12.428502020   19.14 18.84     ~ 18 0
140 SDSS J204431.86+011308.8 G 20 44 31.862 +01 13 08.81           ~ 2 0
141 [VV2006] J210230.8+094125 QSO 21 02 30.7085810441 +09 41 25.058262612   18.77 18.51     ~ 22 0
142 SDSS J210230.87+094121.0 G 21 02 30.870 +09 41 21.07   22.30       ~ 4 0
143 [VV2006] J212938.5-063801 QSO 21 29 38.5886798783 -06 38 01.854594605   18.12 17.82     ~ 17 0
144 SDSS J212938.97-063758.7 G 21 29 38.976 -06 37 58.78   22.29       ~ 4 0
145 SDSS J221126.42+124459.9 G 22 11 26.420 +12 44 59.92   22.33       ~ 4 0
146 [VV2006] J221126.8+124457 QSO 22 11 26.7603079756 +12 44 58.162662057   18.05 17.94     ~ 21 0
147 VVDS 220167040 G 22 15 26.049 +01 13 53.78   21.35     19.828 ~ 5 0
148 USNO-A2.0 0900-20047482 QSO 22 15 26.7464362039 +01 13 56.473908946   18.5 19.04 18.4   ~ 13 0
149 SDSS J221526.88+011347.2 G 22 15 26.889 +01 13 47.20   22.06       ~ 4 0
150 SDSS J222849.01-005640.0 G 22 28 49.013 -00 56 40.06           ~ 2 0
151 [VV2006] J222849.2-005630 QSO 22 28 49.2011504046 -00 56 30.824036844   18.90 18.45     ~ 17 0
152 SDSS J223246.44+134655.3 G 22 32 46.441 +13 46 55.37   20.41       ~ 4 0
153 QSO J2232+1347 QSO 22 32 46.8074843651 +13 47 02.076265524   18.36 17.93     ~ 25 0
154 SDSS J223316.35+133315.3 G 22 33 16.353 +13 33 15.39   19.82       ~ 4 0
155 [VV2006] J223316.9+133309 QSO 22 33 16.8754290494 +13 33 09.960642706   18.52 18.24     ~ 17 0
156 SDSS J223359.74-003320.8 G 22 33 59.740 -00 33 20.81   20.70       ~ 4 0
157 LBQS 2231-0048 QSO 22 33 59.9313869539 -00 33 15.797603856   18.19 17.76     ~ 36 0
158 SDSS J224704.01-081601.0 G 22 47 04.015 -08 16 01.00   21.23       ~ 4 0
159 PB 7206 QSO 22 47 04.7638261273 -08 16 17.547731245   17.65 17.33     ~ 23 0
160 SDSS J230225.06-082156.6 G 23 02 25.062 -08 21 56.62   21.90       ~ 4 0
161 SDSS J230225.17-082159.0 G 23 02 25.173 -08 21 59.03           ~ 2 0
162 [VV2006] J230225.5-082154 QSO 23 02 25.4950200472 -08 21 54.077183157   18.8 18.96 18.3   ~ 21 0
163 SDSS J230845.53-091445.9 G 23 08 45.532 -09 14 45.96   21.42       ~ 4 0
164 [VV2006] J230845.6-091449 QSO 23 08 45.6033623285 -09 14 49.405937769   19.31 19.01     ~ 18 0
165 SDSS J232812.79-090603.7 G 23 28 12.791 -09 06 03.73           ~ 2 0
166 PHL 2344 QSO 23 28 12.9152653900 -09 05 22.508480077   17.90 17.71     ~ 18 0
167 SDSS J234949.41+003542.3 G 23 49 49.414 +00 35 42.32   21.71       ~ 4 0
168 [VV2006] J234949.6+003535 QSO 23 49 49.6150677616 +00 35 35.362887041   19.11 18.68     ~ 24 0

    Equat.    Gal    SGal    Ecl

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2019.12.10-04:30:19

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