‘Onion skins’ in Galactic coordinates, centred on l=300 using ‘Labyrinth’ software

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


V5

V4V3

VolansVoid

OrionVoid

2703300 24030 210300



Fornax Wall = de Vaucouleurs‘Southern Supercluster’ bottom right

VirgoSouthernExtension

LMC

SMC

2000 < cz < 2999

LocalVoid

EridanusVoid


50 Mpc

C alpha

Fornax-DoradusEridanus

(Puppis)

HydraCentaurus

(Virgo)

V8

V10

V9

2703300 24030 210300



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


50 Mpc

V20V13

V15V12

2703300 24030 210300



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


Sculptor Wall

50 Mpc

Pavo

-Indu

s-Tel

esco

pium

Centaurus

(C8)

Virgo

HydraC4

(C2)

C3(N1600)

Cetus

V16

V31

V17


2703300 24030 210300



A3627

Centaurus Wall with A3627

LMC

SMC

5000 < cz < 5999

mmmmIiiiiiiiiiiiiiiiiiiiiiiiiiii


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


AquariusVoid

V53

2703300 24030 210300



LMC

SMC


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



Large Voids V14 and V64

LMC

SMC


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



LMC

SMC


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



LMC

SMC


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



Note huge void V74 in centre

LMC

SMC

V48


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



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


V213 (Rift)

Dorado

Shapley (a)


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



LMC

SMC

12000 < cz < 129996dF Galaxy SurveyGalactic coordinateswith l = 300 central V380

V371

V442

V85V180

V82


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



LMC

SMC


V214 V138

Lepus (a)

Shapley (b)


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



LMC

SMC

Low density regionssurround Shapley (b)


V245

V127V287

V389 Shapley (b)


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



Shapley (b) is by far thegreatest overdensity in

the 6dF volume. Note toohuge void V313 and others

LMC

SMC


V407

V313

CetusSculptor (b)

Leo

Shapley (b)


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



A low-density ‘annulus’,with radius over 100 Mpc,

surrounds Shapley (b)

LMC

SMC


V402

V324

V121

V500

V475

Cetus

Grus

Hydra (b)

Sextens


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



LMC

SMC

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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’

‘Onion skins’ in Galactic coordinates, centred on l=300 using ‘Labyrinth’ software

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