2015ApJ...814...40W

Query : 2015ApJ...814...40W

2015ApJ...814...40W - Astrophys. J., 814, 40 (2015/November-3)

Nearby galaxy filaments and the Lyα forest: confronting simulations and the UV background with observations.

WAKKER B.P., HERNANDEZ A.K., FRENCH D.M., KIM T.-S., OPPENHEIMER B.D. and SAVAGE B.D.

Abstract (from CDS):

Simulations of the formation of large-scale structures predict that dark matter, low density highly ionized gas, and galaxies form 10 to 40 Mpc scale filaments. These structures are easily recognized in the distribution of galaxies. Here we use Lyα absorption lines to study the gas in 30x6 Mpc filament at cz ∼ 3500 km/s, defined using a new catalog of nearby (cz < 10,000 km/s) galaxies, which is complete down to a luminosity of about 0.05 L* for the region of space analyzed here. Using Hubble Space Telescope spectra of 24 active galactic nuclei, we sample the gas in this filament. All of our sightlines pass outside the virial radius of any known filament galaxy. Within 500 kpc of the filament axis the detection rate is ∼80%, but no detections are seen more than 2.1 Mpc from the filament axis. The width of the Lyα lines correlates with filament impact parameter and the four BLAs in our sample occur within 400 kpc of the filament axis, indicating increased temperature and/or turbulence. Comparing to simulations, we find that the recent Haardt & Madau extragalactic ionizing background predicts a factor of 3-5 too few ionizing photons. Using a more intense radiation field matches the hydrogen density profile within 2.1 Mpc of the filament axis, but the simulations still overpredict the detection rate between 2.1 and 5 Mpc from the axis. The baryonic mass inside filament galaxies is 1.4x1013 M☉, while the mass of filament gas outside galaxy halos is found to be.

Abstract Copyright: ∼

Journal keyword(s): galaxies: halos - intergalactic medium - quasars: absorption lines - ultraviolet: general

VizieR on-line data: <Available at CDS (J/ApJ/814/40): table1.dat table2.dat>

Simbad objects: 111

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Number of rows : 111
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 Ton 1388 Sy1 11 19 08.6786220240 +21 19 17.987085948   14.91 14.80     ~ 492 0
3 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 6022 1
4 [DYC2005] 443 EmO 13 59 00.595 +62 40 39.99         24.61 ~ 2 0
5 RCS 06100304426 G 14 16 55.89 +53 59 18.1           ~ 2 0
6 RCS 06100303673 G 14 16 58.27 +54 01 06.9           ~ 2 0
7 Z 296-15 Sy1 14 36 22.0820611632 +58 47 39.394934844   14.19 13.79     ~ 592 0
8 LEDA 2451145 AG? 14 53 38.4250729416 +53 47 58.891319556   17.0       ~ 11 0
9 LEDA 2449102 AG? 14 56 20.689 +53 43 36.83           ~ 5 0
10 SDSS J145718.28+543105.8 AG? 14 57 18.286 +54 31 05.82           ~ 2 0
11 SDSS J145753.63+534602.5 AG? 14 57 53.633 +53 46 02.52           ~ 2 0
12 Z 273-36 GiG 14 57 56.34525 +53 47 05.8577   15.3       ~ 22 0
13 NGC 5820 GiP 14 58 39.7879339608 +53 53 09.449037708   13.0       ~ 67 0
14 NGC 5821 GiP 14 58 59.6487781632 +53 55 23.780588016   14.9       ~ 56 0
15 3C 309.1 Bla 14 59 07.58390804 +71 40 19.8668093   17.24 16.78 17.2   ~ 509 1
16 LEDA 2437690 Sy1 14 59 49.5954056976 +53 19 09.075281592   17.15 16.95     ~ 30 0
17 2MASS J15003066+5517092 Sy1 15 00 30.6680452944 +55 17 09.190230648   17.96 17.85     ~ 54 0
18 Z 274-6 LSB 15 01 13.659 +52 35 47.09   15.2       ~ 49 0
19 LEDA 3096403 Sy1 15 03 16.3772002176 +68 10 06.255224364   17.4       ~ 16 1
20 8C 1503+570 QSO 15 04 55.5640885416 +56 49 20.334959904   17.34 17.20     ~ 47 1
21 SDSS J150621.06+550842.1 AG? 15 06 21.079 +55 08 42.12           ~ 3 0
22 SDSS J150654.38+553218.5 G 15 06 54.3862271064 +55 32 18.611785968           ~ 2 0
23 Z 318-15 AG? 15 06 54.69 +66 10 34.9   15.50       ~ 27 0
24 Z 274-21 AG? 15 07 48.3343009872 +55 11 08.708218476   14.7       ~ 33 0
25 LEDA 4005471 AG? 15 08 04.228 +55 19 53.95           ~ 5 0
26 LEDA 84442 Sy2 15 08 52.8133000536 +68 14 06.979762752   16.0 15.5     ~ 33 0
27 NGC 5894 AG? 15 11 40.9482635976 +59 48 32.047254360   13.40       ~ 85 1
28 IC 1110 AG? 15 12 05.0791549656 +67 21 45.237275604   14.90       ~ 38 0
29 Z 297-7 Sy2 15 13 29.224 +58 30 33.22   15.0       ~ 31 0
30 Z 297-9 Sy1 15 15 04.697 +61 12 11.60   14.8       ~ 12 0
31 LEDA 2578846 AG? 15 18 27.058 +58 26 58.56           ~ 8 0
32 SDSS J151917.61+603436.0 AG? 15 19 17.615 +60 34 36.01           ~ 3 0
33 LEDA 2816140 Sy1 15 19 21.6700337592 +59 08 23.720182584   16.14 15.94     ~ 65 0
34 2MASSI J1521537+594019 Sy1 15 21 53.8100566488 +59 40 20.056736460   17.78 17.66     ~ 47 0
35 SDSS J152209.94+583819.5 AG? 15 22 09.9436468944 +58 38 19.364306676           ~ 3 0
36 4C 63.22 Sy1 15 23 45.8710375248 +63 39 24.273815940     16.80     ~ 47 1
37 Z 297-12 LSB 15 23 51.735 +58 03 11.23   14.6       ~ 85 0
38 Z 319-14 AG? 15 25 04.85 +66 15 19.3   15.0       ~ 26 0
39 LEDA 2495689 AG? 15 25 58.35779 +55 15 02.1913   17.0       ~ 14 0
40 2MASS J15272866+6548102 Sy1 15 27 28.6471941048 +65 48 10.361404008     16.8     ~ 20 0
41 Z 274-44 H2G 15 27 50.5479789792 +55 26 13.447427856   15.6       ~ 18 0
42 Z 274-45 H2G 15 28 04.1850163944 +55 32 45.107013156   14.8       ~ 37 0
43 LEDA 2531253 Sy1 15 29 07.4560860072 +56 16 06.729661596   16.90 16.74     ~ 47 0
44 LEDA 4118546 AG? 15 29 56.693 +58 26 35.92           ~ 6 0
45 SDSS J153007.13+553432.8 AG? 15 30 07.13720 +55 34 32.8195           ~ 2 0
46 SDSS J153040.87+575300.9 AG? 15 30 40.833 +57 53 01.13           ~ 4 0
47 Z 274-47 AG? 15 31 05.068 +55 44 16.34   15.7       ~ 10 0
48 LEDA 214388 AG? 15 33 24.549 +56 36 31.53           ~ 15 0
49 LEDA 2544936 AG? 15 33 25.64169 +56 41 56.5051           ~ 4 0
50 Z 297-17 AG? 15 33 57.68 +57 21 44.0   15.6       ~ 9 1
51 LEDA 2549587 AG? 15 33 57.9642825048 +56 50 50.468486208           ~ 15 0
52 NGC 5965 SyG 15 34 02.3002830024 +56 41 08.509684740   13.4       ~ 133 0
53 NVSS J153412+571655 rG 15 34 13.3862564640 +57 17 07.282532472   15.8       ~ 79 1
54 SBSG 1533+574B AGN 15 34 14.16 +57 17 03.5   16.6       ~ 29 1
55 LEDA 2567028 AG? 15 35 14.265 +57 30 53.15           ~ 12 0
56 MCG+09-26-001 AG? 15 35 27.412 +56 01 58.03   17       ~ 6 0
57 Mrk 290 Sy1 15 35 52.4031021552 +57 54 09.515660508   15.55 15.27     ~ 575 0
58 [VV2006c] J153558.9+564108 Sy1 15 35 58.836 +56 41 08.22   20.78 20.35     ~ 5 0
59 KHG 1-C 7 G 15 36 15 +60 20.2           ~ 2 0
60 Mrk 486 Sy1 15 36 38.4011947776 +54 33 33.215039244   15.21 14.78     ~ 292 1
61 SDSS J153706.67+585651.5 AG? 15 37 06.678 +58 56 51.54           ~ 4 0
62 SDSS J153733.02+583447.7 AG? 15 37 33.027 +58 34 47.80           ~ 6 0
63 SDSS J153742.04+570506.5 AG? 15 37 42.041 +57 05 06.50           ~ 3 0
64 LEDA 2566856 AG? 15 38 02.753 +57 30 18.32           ~ 7 0
65 MCG+10-22-028 Sy1 15 38 10.0473807576 +57 36 13.120525044   18.49 17.77     ~ 52 0
66 NGC 5987 GiG 15 39 57.3733917696 +58 04 46.195631832   13.3       ~ 98 0
67 SHOC 513 H2G 15 40 54.3243818904 +56 51 39.030034680           ~ 12 0
68 LEDA 2567356 AG? 15 41 09.60 +57 31 51.0   18       ~ 10 0
69 SDSS J154331.89+571434.0 AG? 15 43 31.897 +57 14 34.01           ~ 3 0
70 MCG+10-22-035 EmG 15 43 48.762 +57 13 59.64   19       ~ 29 0
71 2MASX J15435369+5713235 G 15 43 53.694 +57 13 23.54   18.5       ~ 6 0
72 SBSG 1543+593 LSB 15 44 20.30 +59 12 24.2   17.5 16.9     ~ 55 2
73 LEDA 2560153 AG? 15 44 34.42187 +57 12 43.7386           ~ 5 0
74 MCG+10-22-037 AG? 15 45 18.24606 +57 24 34.9308   16       ~ 15 0
75 [VV96] J155232.5+570515 Sy1 15 52 32.5173870168 +57 05 16.048986144   17.50 17.36     ~ 24 1
76 LEDA 2552334 AG? 15 52 35.480 +56 56 04.28           ~ 3 0
77 KHG 1-C 9 G 15 54 26 +60 21.3           ~ 2 0
78 NVSS J155447+570934 rG 15 54 47.6183071608 +57 09 34.613330040   17.0       ~ 11 0
79 Z 338-38 AG? 16 01 05.1219964320 +71 29 40.210588500   15.1       ~ 16 0
80 KHG 1-C 10 G 16 03.6 +59 52           ~ 2 0
81 6C 160731+602558 BLL 16 08 20.5424263152 +60 18 28.200689748     16.00 15.9   ~ 33 2
82 Z 298-11 LSB 16 09 25.752 +60 05 18.35   15.6       ~ 13 0
83 Mrk 874B G 16 11 44.6 +60 35 03   14.5       ~ 10 0
84 Z 298-17 GiP 16 11 46.9 +60 34 51   14.5       ~ 36 0
85 UGC 10294 AG? 16 13 22.19 +65 25 06.3   16.5       ~ 10 0
86 Mrk 876 Sy1 16 13 57.1795021224 +65 43 09.952685328   16.03 15.49     ~ 620 0
87 NGC 6135 AG? 16 14 24.9006410256 +64 58 57.587622132   14.8       ~ 20 0
88 UGC 10376 AG? 16 22 50.94 +65 26 15.9   16.5       ~ 11 0
89 2MASX J16252653+5727278 Sy1 16 25 26.5386172392 +57 27 27.743129208   16.28 15.47     ~ 15 0
90 QSO B1626+5529 Sy1 16 27 56.1123628752 +55 22 31.559061504   15.79 15.68     ~ 232 1
91 NGC 6258 AG? 16 52 29.7907886424 +60 30 52.261745652   14.5       ~ 24 0
92 Z 299-45 AG? 17 01 12.967 +60 15 04.85   15.1       ~ 16 0
93 NGC 6292 AG? 17 03 03.4596100008 +61 02 38.054871636   14.4       ~ 42 0
94 LEDA 2612096 AG? 17 03 28.156 +61 06 31.73           ~ 5 0
95 LEDA 59503 Sy1 17 03 28.9510261992 +61 41 09.940891560   17.18 16.84     ~ 32 0
96 8C 1704+608 Bla 17 04 41.3742408840 +60 44 30.520617000   15.65 15.40 15.30   ~ 782 1
97 Z 299-52 EmG 17 06 15.8338141152 +60 42 18.744417468   15.7       ~ 29 0
98 LEDA 2609009 AG? 17 07 12.708 +60 55 14.41           ~ 6 0
99 NGC 6306 GiG 17 07 36.907 +60 43 43.19 14.42 14.40 13.74     ~ 52 1
100 NGC 6307 GiP 17 07 40.4719465584 +60 45 02.748310056   13.95       ~ 44 1
101 NGC 6310 LIN 17 07 57.437 +60 59 24.20   13.8       ~ 66 0
102 UGC 10745 LSB 17 10 10.47208 +61 21 01.8139   16.5       ~ 13 0
103 LEDA 4007573 AG? 17 11 38.962 +60 43 41.58           ~ 3 0
104 SDSS J171140.34+604115.5 AG? 17 11 40.34239 +60 41 15.5796           ~ 2 0
105 LEDA 84870 AG? 17 16 14.517 +60 24 44.25   16.5       ~ 11 0
106 IRAS F17175+6603 Sy1 17 17 37.9541536320 +65 59 39.387255144   17.86 17.68     ~ 40 0
107 HIJASS J1720+71 G 17 20 40.7 +71 32 11           ~ 2 0
108 7C 1821+6419 Sy1 18 21 57.2130271440 +64 20 36.221312076   14.23 14.24     ~ 632 1
109 NGC 6636 G 18 22 02.8247695872 +66 36 59.871455244   14.2       ~ 48 0
110 NGC 6687 AG? 18 37 22.119 +59 38 34.85   14.9       ~ 18 0
111 NGC 6701 AGN 18 43 12.429 +60 39 12.13   12.9       ~ 142 1

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