2020MNRAS.491.2057L

Query : 2020MNRAS.491.2057L

2020MNRAS.491.2057L - Mon. Not. R. Astron. Soc., 491, 2057-2074 (2020/January-2)

MUSE Analysis of Gas around Galaxies (MAGG) - I: Survey design and the environment of a near pristine gas cloud at z ≃ 3.5.

LOFTHOUSE E.K., FUMAGALLI M., FOSSATI M., O'MEARA J.M., MURPHY M.T., CHRISTENSEN L., PROCHASKA J.X., CANTALUPO S., BIELBY R.M., COOKE R.J., LUSSO E. and MORRIS S.L.

Abstract (from CDS):

We present the design, methods, and first results of the MUSE Analysis of Gas around Galaxies (MAGG) survey, a large programme on the Multi-Unit Spectroscopic Explorer (MUSE) instrument at the Very Large Telescope (VLT), which targets 28 z > 3.2 quasars to investigate the connection between optically thick gas and galaxies at z ∼ 3-4. MAGG maps the environment of 52 strong absorption line systems at z >= 3, providing the first statistical sample of galaxies associated with gas-rich structures in the early Universe. In this paper, we study the galaxy population around a very metal poor gas cloud at z ≃ 3.53 towards the quasar J124957.23-015928.8. We detect three Lyα emitters within <= 200∼km∼s^{-1} of the cloud redshift, at projected separations <= 185≈kpc (physical). The presence of star-forming galaxies near a very metal-poor cloud indicates that metal enrichment is still spatially inhomogeneous at this redshift. Based on its very low metallicity and the presence of nearby galaxies, we propose that the most likely scenario for this Lyman Limit System (LLS) is that it lies within a filament which may be accreting on to a nearby galaxy. Taken together with the small number of other LLSs studied with MUSE, the observations to date show a range of different environments near strong absorption systems. The full MAGG survey will significantly expand this sample and enable a statistical analysis of the link between gas and galaxies to pin down the origin of these diverse environments at z ≃ 3-4.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: evolution - galaxies: formation - galaxies: haloes - galaxies: high-redshift - quasars: absorption lines

VizieR on-line data: <Available at CDS (J/MNRAS/491/2057): table2.dat table3.dat table4.dat>

Nomenclature: Fig. 7, Table 3: [LFF2020] MUSEJHHMMSS.ss+DDMMSS.s N=105. Fig. 10, Table 4: [LFF2020] JHHMMSS.sss+DDMMSS.ss N=6.

Simbad objects: 92

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Number of rows : 92
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 QSO B0103+00 QSO 01 06 19.2392271120 +00 48 23.369353992   21.68 20.23     ~ 94 0
2 QSO J0124+0044 QSO 01 24 03.7793700432 +00 44 32.745561900   19.71 18.71 17.9   ~ 101 0
3 QSO J0133+0400 QSO 01 33 40.3265690928 +04 00 59.844453768     18.30     ~ 74 0
4 QSO B0135-42 QSO 01 37 24.3934534824 -42 24 17.145923688     18.46     ~ 30 0
5 QSO J0157-0106 QSO 01 57 41.5697767176 -01 06 29.648080260   19.40 18.71     ~ 49 0
6 QSO J0209+0517 QSO 02 09 44.6218858992 +05 17 13.727761872     17.80     ~ 60 0
7 QSO B0241-01 QSO 02 44 01.8451874040 -01 34 03.848758680     18.20     ~ 65 0
8 QSO J0334-1612 QSO 03 34 13.4320665912 -16 12 05.308048188     17.86     ~ 23 0
9 QSO B0336-017 Bla 03 39 00.98616588 -01 33 17.6076051   20.1 19.1 18.8   ~ 121 2
10 QSO J0949+0335 QSO 09 49 32.2676631768 +03 35 31.756872768   20.05 18.97     ~ 38 0
11 QSO J0958+1202 QSO 09 58 52.1994218616 +12 02 45.038331528   18.24 17.91     ~ 129 0
12 4C 10.29 QSO 10 20 09.9945425592 +10 40 02.694508932   18.74 18.35     ~ 108 1
13 QSO J1110+0244 QSO 11 10 08.6149313520 +02 44 58.123439448   20.05 19.05     ~ 41 0
14 QSO B1108-07 QSO 11 11 13.600 -08 04 02.00     18.10     ~ 85 0
15 QSO B1206+1155 QSO 12 09 17.9386504152 +11 38 30.374610684   18.15 17.89     ~ 78 0
16 QSO B1228-113 Bla 12 30 55.5556807872 -11 39 09.791771256   22.010   19.115   ~ 81 1
17 [LFF2020] MUSEJ124955.33-015950.9 G 12 49 55.332 -01 59 50.91           ~ 1 0
18 [LFF2020] MUSEJ124955.40-015953.7 G 12 49 55.399 -01 59 53.74           ~ 1 0
19 [LFF2020] MUSEJ124955.46-015937.7 G 12 49 55.462 -01 59 37.69           ~ 1 0
20 [DFF2020] J124955.47-015928.6 G 12 49 55.471 -01 59 28.63           ~ 2 0
21 [LFF2020] MUSEJ124955.51-015902.7 G 12 49 55.507 -01 59 02.74           ~ 1 0
22 [LFF2020] MUSEJ124955.52-015939.7 G 12 49 55.517 -01 59 39.66           ~ 1 0
23 [DFF2020] J124955.55-015953.1 G 12 49 55.553 -01 59 53.15           ~ 2 0
24 [DFF2020] J124955.56-015957.6 G 12 49 55.555 -01 59 57.65           ~ 2 0
25 [DFF2020] J124955.59-015922.5 G 12 49 55.586 -01 59 22.50           ~ 2 0
26 [LFF2020] MUSEJ124955.60-015904.0 G 12 49 55.606 -01 59 03.95           ~ 1 0
27 [LFF2020] MUSEJ124955.72-015944.0 G 12 49 55.716 -01 59 44.00           ~ 1 0
28 [LFF2020] MUSEJ124955.73-015913.3 G 12 49 55.726 -01 59 13.29           ~ 1 0
29 [LFF2020] MUSEJ124955.75-015917.7 G 12 49 55.747 -01 59 17.68           ~ 1 0
30 [LFF2020] MUSEJ124955.77-015940.0 G 12 49 55.769 -01 59 39.99           ~ 1 0
31 [LFF2020] MUSEJ124955.79-015902.0 G 12 49 55.790 -01 59 01.95           ~ 1 0
32 [LFF2020] MUSEJ124955.80-015907.0 G 12 49 55.795 -01 59 06.98           ~ 1 0
33 [DFF2020] J124955.82-015956.3 G 12 49 55.824 -01 59 56.31           ~ 2 0
34 [LFF2020] J124955.825-015907.53 EmG 12 49 55.825 -01 59 07.53           ~ 1 0
35 [LFF2020] MUSEJ124955.85-015937.0 G 12 49 55.853 -01 59 37.03           ~ 1 0
36 [DFF2020] J124955.97-015952.5 G 12 49 55.966 -01 59 52.53           ~ 2 0
37 [LFF2020] J124956.091-015920.13 EmG 12 49 56.091 -01 59 20.13           ~ 1 0
38 [LFF2020] MUSEJ124956.13-015956.5 G 12 49 56.129 -01 59 56.46           ~ 1 0
39 [LFF2020] MUSEJ124956.20-015949.2 G 12 49 56.203 -01 59 49.17           ~ 1 0
40 [LFF2020] MUSEJ124956.21-015903.7 G 12 49 56.213 -01 59 03.69           ~ 1 0
41 [LFF2020] MUSEJ124956.25-015931.6 G 12 49 56.249 -01 59 31.62           ~ 1 0
42 [DFF2020] J124956.36-015905.0 G 12 49 56.354 -01 59 04.96           ~ 2 0
43 [LFF2020] J124956.409-015955.19 EmG 12 49 56.409 -01 59 55.19           ~ 1 0
44 [LFF2020] MUSEJ124956.52-015950.4 G 12 49 56.518 -01 59 50.43           ~ 1 0
45 [DFF2020] J124956.57-015942.6 G 12 49 56.575 -01 59 42.57           ~ 2 0
46 [LFF2020] MUSEJ124956.58-015902.1 G 12 49 56.582 -01 59 02.08           ~ 1 0
47 [DFF2020] J124956.60-015957.1 G 12 49 56.599 -01 59 57.13           ~ 2 0
48 [LFF2020] J124956.650-015936.85 EmG 12 49 56.650 -01 59 36.85           ~ 1 0
49 [DFF2020] J124956.71-015956.0 G 12 49 56.710 -01 59 55.99           ~ 2 0
50 [LFF2020] MUSEJ124956.76-015933.2 G 12 49 56.758 -01 59 33.15           ~ 1 0
51 [LFF2020] MUSEJ124956.79-015914.8 G 12 49 56.786 -01 59 14.81           ~ 1 0
52 [DFF2020] J124956.84-015921.7 G 12 49 56.844 -01 59 21.67           ~ 2 0
53 [LFF2020] J124957.096-015922.08 EmG 12 49 57.096 -01 59 22.08           ~ 1 0
54 [DFF2020] J124957.15-015942.1 G 12 49 57.151 -01 59 42.15           ~ 2 0
55 QSO J1249-0159 QSO 12 49 57.2390828736 -01 59 28.777376220   18.93 18.19     ~ 64 0
56 [LFF2020] MUSEJ124957.33-015934.6 G 12 49 57.334 -01 59 34.58           ~ 1 0
57 [LFF2020] MUSEJ124957.52-015907.9 G 12 49 57.516 -01 59 07.90           ~ 1 0
58 [LFF2020] MUSEJ124957.62-015957.4 G 12 49 57.619 -01 59 57.36           ~ 1 0
59 [DFF2020] J124957.67-015932.0 G 12 49 57.665 -01 59 31.96           ~ 2 0
60 [LFF2020] MUSEJ124957.68-015950.9 G 12 49 57.677 -01 59 50.88           ~ 1 0
61 [LFF2020] MUSEJ124957.87-015912.7 G 12 49 57.869 -01 59 12.67           ~ 1 0
62 [LFF2020] MUSEJ124958.01-015933.6 G 12 49 58.008 -01 59 33.58           ~ 1 0
63 [DFF2020] J124958.01-015919.5 G 12 49 58.013 -01 59 19.49           ~ 2 0
64 [DFF2020] J124958.13-015936.2 G 12 49 58.130 -01 59 36.16           ~ 2 0
65 [LFF2020] MUSEJ124958.16-015909.7 G 12 49 58.164 -01 59 09.75           ~ 1 0
66 [LFF2020] MUSEJ124958.19-015957.4 G 12 49 58.186 -01 59 57.45           ~ 1 0
67 [LFF2020] MUSEJ124958.23-015926.6 G 12 49 58.229 -01 59 26.57           ~ 1 0
68 [LFF2020] MUSEJ124958.24-015913.0 G 12 49 58.243 -01 59 13.02           ~ 1 0
69 [LFF2020] J124958.276-015910.42 EmG 12 49 58.276 -01 59 10.42           ~ 1 0
70 [LFF2020] MUSEJ124958.31-015939.3 G 12 49 58.313 -01 59 39.31           ~ 1 0
71 [DFF2020] J124958.55-015930.9 G 12 49 58.548 -01 59 30.91           ~ 2 0
72 [LFF2020] MUSEJ124958.55-015944.6 G 12 49 58.555 -01 59 44.65           ~ 1 0
73 [LFF2020] MUSEJ124958.69-015929.1 G 12 49 58.692 -01 59 29.12           ~ 1 0
74 [LFF2020] MUSEJ124958.81-015934.4 * 12 49 58.814 -01 59 34.36           ~ 1 0
75 [LFF2020] MUSEJ124958.84-015950.2 G 12 49 58.838 -01 59 50.25           ~ 1 0
76 [LFF2020] MUSEJ124958.85-015944.1 G 12 49 58.846 -01 59 44.09           ~ 1 0
77 [LFF2020] MUSEJ124958.94-015931.8 G 12 49 58.937 -01 59 31.82           ~ 1 0
78 [LFF2020] MUSEJ124958.95-015950.4 G 12 49 58.951 -01 59 50.40           ~ 1 0
79 [DFF2020] J124959.09-015904.8 G 12 49 59.093 -01 59 04.78           ~ 2 0
80 [LFF2020] MUSEJ124959.16-015921.4 G 12 49 59.165 -01 59 21.41           ~ 1 0
81 [LFF2020] MUSEJ124959.20-015909.4 G 12 49 59.196 -01 59 09.38           ~ 1 0
82 QSO B1330+0108 QSO 13 32 54.5135635824 +00 52 50.616766632   19.34 18.70     ~ 40 0
83 QSO B1422+2309 BLL 14 24 38.0938 +22 56 00.587   16.77 15.84 14.79   ~ 464 1
84 QSO B1618-0035 QSO 16 21 16.9228185456 -00 42 50.909201856   18.92 17.97     ~ 86 0
85 QSO B1937-1009 BLL 19 39 57.2566747152 -10 02 41.522299692   18.800 19.0 17.188   ~ 207 1
86 QSO B2000-330 Bla 20 03 24.1161711720 -32 51 45.136882080   18.83 18.4 17.11   ~ 279 1
87 QSO B2050-359 QSO 20 53 44.6745931128 -35 46 55.380643212   18.34 17.65     ~ 16 0
88 QSO J2215-1611 QSO 22 15 27.2920172928 -16 11 33.057278052     18.10     ~ 58 0
89 KODIAQ J230301-093930 QSO 23 03 01.4579957256 -09 39 30.654165780   18.64 18.12     ~ 41 0
90 QSO J2315+1456 QSO 23 15 43.5656821392 +14 56 06.400539564   19.58 18.97     ~ 43 0
91 QSO B2332-094 QSO 23 34 46.4045250120 -09 08 12.250650732   19.21 18.62 18.07   ~ 89 1
92 QSO J2349-3712 QSO 23 49 13.7825429232 -37 12 59.310558144     18.69     ~ 26 0

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