Visualizations of the 6dF Galaxy Surveywith identified features
including 2MRS overdensities and voids
‘Onion skins’ in Galactic coordinates, centred on l=300using ‘Labyrinth’ software
Tony Fairall/University of Cape Town/August 07
300330030 270 240 210
+30
-30
-60
-90
+60
6dF Galaxy SurveyGalactic coordinateswith l = 300 central
Grid applies to all slides following
400 < cz < 10006dF Galaxy SurveyGalactic coordinateswith l = 300 central
LocalVoid
CetusVoid
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
VolansVoid
NGC 5128
M 83
2703300 24030 210300
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
CraterVoid
MonocerosVoid
LMC
SMC
1000 < cz < 1999
LocalVoid
Fornax Wall
FornaxCluster
6dF Galaxy SurveyGalactic coordinateswith l = 300 central
V5
V4V3
VolansVoid
OrionVoid
2703300 24030 210300
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
Fornax Wall = de Vaucouleurs‘Southern Supercluster’ bottom right
VirgoSouthernExtension
LMC
SMC
2000 < cz < 2999
LocalVoid
EridanusVoid
6dF Galaxy SurveyGalactic coordinateswith l = 300 central
50 Mpc
C alpha
Fornax-DoradusEridanus
(Puppis)
HydraCentaurus
(Virgo)
V8
V10
V9
2703300 24030 210300
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
Local Void dominates. Eridanus Void appears from behind
Fornax Wall (in previous image).
Hydra WallCe
ntau
rus w
all
LMC
SMC
VolansVoid
3000 < cz < 3999
Micoscopium Void(continuation of Local Void)
EridanusVoid
CentaurusCluster
HydraCluster
6dF Galaxy SurveyGalactic coordinateswith l = 300 central
50 Mpc
V20V13
V15V12
2703300 24030 210300
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
CorvusVoid
AquariusVoid
Cent
auru
s Wal
l
Pavo Spur
Centaurus and Hydra Clusters
LMC
SMC
4000 < cz < 4999
AquariusVoid
Canis Major Void
EridanusVoid
SculptorVoid
HydraVoid
e n t
C a u
r u
s W
a l l
6dF Galaxy SurveyGalactic coordinateswith l = 300 central
Sculptor Wall
50 Mpc
Pavo
-Indu
s-Tel
esco
pium
Centaurus
(C8)
Virgo
HydraC4
(C2)
C3(N1600)
Cetus
V16
V31
V17
Micoscopium Void(continuation of Local Void)
2703300 24030 210300
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
A3627
Centaurus Wall with A3627
LMC
SMC
5000 < cz < 5999
mmmmIiiiiiiiiiiiiiiiiiiiiiiiiiii
6dF Galaxy SurveyGalactic coordinateswith l = 300 central
SculptorVoid
HydraVoid
V17
Sculptor Wall
Indus
Columba Void
50 Mpc
(A3627)
Pavo-IndusTelescopium
WLB 248
HydraC8
Phoenix
A2923
Cetus
(C9)
V2 =
V63
V41
V19
V21V22
V46
V28
V14
V1
Micoscopium Void(continuation of Local Void)
AquariusVoid
V53
2703300 24030 210300
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
LMC
SMC
6000 < cz < 69996dF Galaxy SurveyGalactic coordinateswith l = 300 central
V14
Li bra
50 Mpc
A 1605, 300& 42
WLB 248
Phoenix
V1
V18
V1
V25
V27
V38
V40
V62
V50
V43
V30
V32
V2 =V17
V64
2703300 24030 210300
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
Large Voids V14 and V64
LMC
SMC
7000 < cz < 79996dF Galaxy SurveyGalactic coordinateswith l = 300 central
V32
V64
V34
50 Mpc
C12
Phoenix
C11
CAN 136
Ophiuchus(north)
SDSS CEJ159.778641-00.784376
(GreatWall)
SC 129
V26
V33
ApusVoid
V48
V29
V133
V61
V57
V71 V72
V345
V361
V170
2703300 24030 210300
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
LMC
SMC
8000 < cz < 89996dF Galaxy SurveyGalactic coordinateswith l = 300 central
V153
Crater
Ophiuchus
Sculptor Wall
V37V74
FornaxVoid
V34
50 Mpc
Ohhiuchus
CapricornusVoid
ApusVoid
A3389
Klemola 42
AS0929
V58
V77
V69
V42
V48
V44
V528
V154
V237
V51
V65
V54
V170
“Fornax Void”(See notes)
V68
V379
V203
V72
V345
2703300 24030 210300
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
LMC
SMC
9000 < cz < 99996dF Galaxy SurveyGalactic coordinateswith l = 300 central
FornaxVoid
V74
Eridanus
Sculptor Wall
V34
V23
V29
V203
V211
50 Mpc
Leo(south)
Shapley
V59 V90
V78
V357 V358
V382 V353V381 V70
V56
V52
V37
V224
V68
V379
V532
V359
V414
2703300 24030 210300
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
Note huge void V74 in centre
LMC
SMC
V48
10000 < cz < 109996dF Galaxy SurveyGalactic coordinateswith l = 300 central
V68
V74
Horologium-Canis Major
V52
V202
V203
50 Mpc
ShapleyV3
RXCJ0712.0-6030
Lepus
Hercules
Shapley(south)
Leo(south)
SC180
Abell496
V405
V73V39
V342V360
V362
V419V414
V60 V83
V81
V48
V47V236 V35 V108
V107
V151
V155
V213 (Rift)
V85
V176
V530
V379
V37V245
V214
V29
V76
V160
V382
V532
V359V357 V371
V353
V531
2703300 24030 210300
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
Does huge void V74 in SGHextend toV405 in NGH?
Horologium-Canis Majoris major structure, but
is seen only in crosssections in these plots
LMC
SMC
11000 < cz < 119996dF Galaxy SurveyGalactic coordinateswith l = 300 central
V213 (Rift)
Dorado
Shapley (a)
Horologium-Canis Major
V76
V252
50 Mpc
Shapley
Hercules
Leo(south)
= V3
C17
SC180
Lepus
AS0463
“FurtherFornax”
(See notes)
V89
V79
V80
V359
V85
V67
V307
V268 V286
V244V132
V215
V66
V136
V168
V267
V68
V214
V371
V348
V152
V35
V176
V151
V107
V530V74
V282V160
V60
V82
V379
V73V360
V363
V531
V245
2703300 24030 210300
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
LMC
SMC
12000 < cz < 129996dF Galaxy SurveyGalactic coordinateswith l = 300 central V380
V371
V442
V85V180
V82
Horologium-Canis Major
50 Mpc
Shapley C22V3
C17
SC180SC194
C24 C23SC23
Lepus
“FurtherFornax”
(See notes)
“Columba Void(See notes)”
V379
V392
V84
V421
V435
V416V356
V363
V364
V348
V308
V86
V55V75
V204V107
V185
V258
V205
V267
V242V225
V160
V179
V132
V214V138
V127
V245
V389
V282
V276
V76
V67
V194
V89 V413
V174 V529
V171
V152
V176
2703300 24030 210300
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
LMC
SMC
13000 < cz < 139996dF Galaxy SurveyGalactic coordinateswith l = 300 central
V214 V138
Lepus (a)
Shapley (b)
Horologium-Canis Major
V354
V371
50 Mpc
Shapley
“FurtherFornax”
(See notes)
V15
LeoV410
V403
V454 V413
V354
V372 V347
V180
V262
V275
V276
V85
V241V292
V266
V269
V223
V206
V125
V257
V88
V87
V174
V216V176
V226
V171
V115
V178
V282
V313
V164
V127
V84
V529V245
V442
V389
V348
V75
V441
V194V129
2703300 24030 210300
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
LMC
SMC
Low density regionssurround Shapley (b)
14000 < cz < 149996dF Galaxy SurveyGalactic coordinateswith l = 300 central
V245
V127V287
V389 Shapley (b)
Horologium-Canis Major
V199
50 Mpc
Shapley
AS0757
C29
(C30)
C28
Abell 3376
Leo
V88
V87
V404
V411 V415
V463
V477 V465
V391
V410
V440
V441
V365
V386
V341
V301
V264 V303V232
V277V230
V194
V131
V129
V272
V234
V270
V200
V149
V111
V169
V217
V36
V313
V164
V138
V85
V529
V84
V226
V243
V125
V355
V371 V348
2703300 24030 210300
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
Shapley (b) is by far thegreatest overdensity in
the 6dF volume. Note toohuge void V313 and others
LMC
SMC
15000 < cz < 159996dF Galaxy SurveyGalactic coordinateswith l = 300 central
V407
V313
CetusSculptor (b)
Leo
Shapley (b)
Horologium-Canis Major
V310
50 Mpc
Shapley
Sextens
C30
SC68
V263
V265
V243
V197 V198
V314
V305
V298
V249
V137
V165
V100
V101
V197
V104
V212
V393 V373
V355
V464
V497V458
V233
V164
V263
V527 V528
V321
V127
V529
V161
V121 V199
V428
V409 V475
V402
V226
V245
2703300 24030 210300
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
A low-density ‘annulus’,with radius over 100 Mpc,
surrounds Shapley (b)
LMC
SMC
16000 < cz < 169996dF Galaxy SurveyGalactic coordinateswith l = 300 central
V402
V324
V121
V500
V475
Cetus
Grus
Hydra (b)
Sextens
Horologium-Canis Major
V310
V407
V409
V263
50 Mpc
Sextens
C29
“SouthernGreat Wall”(See notes)
SC68
V161
V300
V233
V172
V191
V530
V321V334
V294
V227
V199
V218
V175V102
V406
V457
V399 V394
V487 V488
V428 V412
V374V531
V422
V383
V485V495V494
V387
V370
V313
V127
V128
V145
V198
V305
V298
V529
2703300 24030 210300
Colour codes for identified featuresFairall Atlas of Nearby LSS 19982MRS Erdogdu et al overdensities 20062MRS Erdogdu et al voids 20066dF Jones-Fairall overdensities 20066dF Fairall voids 2006
Labyrinth software wraps surfacesaround minimal spanning trees.Fairall-Hultquist/University Cape Town/Aug 2007
LMC
SMC
300330030 270 240 210
+30
-30
-60
-90
+60
6dF Galaxy SurveyGalactic coordinateswith l = 300 central
Grid applies to all previous slides
NotesErdogdu et al label a ‘Fornax Void’ and a ‘Further Fornax Void’ but neither of
these are anywhere near the direction of the foreground constellation of Fornax.
Similarly their ‘Columba Void’ does not match the direction of Columba
They also label a ‘Southern Great Wall’ but this is not the same as the ‘Southern Great Wall’ originally found in SSRS2, which is labelled here as the ‘Sculptor Wall’