Tony Fairall / University of Cape Town / Nov 06
24
Visualizations Supergalactic Cartesian Coordinates SGX Moving Slice 1000 km/s thick SGX from 3000 to -6000 in steps of 500 km/s (This version with labelled features) LOCAL NEIGHBOURHOOD Tony Fairall / University of Cape Town / Nov 06
description
6dF Visualizations Supergalactic Cartesian Coordinates SGX Moving Slice 1000 km/s thick SGX from 3000 to -6000 in steps of 500 km/s (This version with labelled features) LOCAL NEIGHBOURHOOD. Tony Fairall / University of Cape Town / Nov 06. - PowerPoint PPT Presentation
Transcript of Tony Fairall / University of Cape Town / Nov 06
6dF VisualizationsSupergalactic Cartesian Coordinates
SGX Moving Slice1000 km/s thick
SGX from 3000 to -6000in steps of 500 km/s
(This version with labelled features)
LOCAL NEIGHBOURHOOD
Tony Fairall / University of Cape Town / Nov 06
‘Labyrinth’ software (written by C. Hultquist and S. Perumal)
Where two or more galaxies are separated by less than the percolation distance (i.e. in groups,clusters or large-scale structures), they are enclosed within a transparent surface. The percolation distance used here is 100 km/s in redshift space at cz=0, but increased with increasing cz to compensate for the drastic decrease in data density.
The colours carry no meaning, except the blue serves to subdue the visual appearance of the distant structures (that look thicker since they were created with a larger percolation distance), in balance with the nearer structures.
PowerPoint presentation allows one to scroll forwards and backwards
0 -5000+5000
+SGY
-SGY
-SGZ+SGZ
Looking in a negative SGX direction.This grid applies to all slides following.
REFERENCEGRID
O
100 M pc
SGX = 3000
Each slice is 1000 km/s thick.
ZOAZOA
6dF LOCAL STRUCTURES
N O D A T A F
O R N O R T H E R N D
E C L I N A T I O
N S
O
SGX = 2500
ZOAZOA
6dF LOCAL STRUCTURES
N O D A T A F
O R N O R T H E R N D
E C L I N A T I O
N S
O
100 M pc
SGX = 2000
ZOAZOA
6dF LOCAL STRUCTURES
N O D A T A F
O R N O R T H E R N D
E C L I N A T I O
N S
O
V1
V2
100 M pc
Newly identified voids(numbered from
V1 to V526)labelled in this colour
SGX = 1500
ZOAZOA
6dF LOCAL STRUCTURES
N O D A T A F
O R N O R T H E R N D
E C L I N A T I O
N S
O
COLUMBA VOID
V1
V2
100 M pc
Previously catalogued voids(e.g. Fairall 1998) labelled
in this colour
SGX = 1000
ZOAZOA
6dF LOCAL STRUCTURES
N O D A T A F
O R N O R T H E R N D
E C L I N A T I O
N S
O
AQUARIUSVOID
CANIS MAJORVOID
COLUMBA VOID
V1
V2
100 M pc
SGX = 500
F O
R
N
A
X
W
A
L L
ZOAZOA
6dF LOCAL STRUCTURES
N O D A T A F
O R N O R T H E R N D
E C L I N A T I O
N S
O
ORIONVOID
AQUARIUSVOID
CANIS MAJORVOID
COLUMBA VOID
V1
100 M pc
SGX = 0
F O
R
N
A
X
W
A
L L
ERIDANUSVOID
ZOAZOA
6dF LOCAL STRUCTURES
N O D A T A F
O R N O R T H E R N D
E C L I N A T I O
N S
OUR GALAXY
LOCALVOID
AQUARIUSVOID
CANIS MAJORVOID
COLUMBA VOID
V1
V3
V4
100 M pc
SGX = -500
FORNAX CLUSTER
ERIDANUSVOID
ERIDANUSVOID
F O
R
N
A
X
W
A
L L
ZOAZOA
6dF LOCAL STRUCTURES
N O D A T A F
O R N O R T H E R N D
E C L I N A T I O
N S
CETUSVOID
VOLANSLOCALVOID
CRATER
O
AQUARIUSVOID
MICROSCOPIUMVOID
CANIS MAJORVOID
COLUMBA VOID
A3354
V1
V3
V4
V5
V6
100 M pc
SGX = -1000
F O
R
N
A
X
W
A
L L
ERIDANUSVOID
ZOAZOA
6dF LOCAL STRUCTURES
CETUSVOID
LOCALVOID
O
AQUARIUSVOID
MICROSCOPIUMVOID
CANIS MAJORVOID
SCULPTORVOID
V1
V3
V5
V6
100 M pc
SGX = -1500
ERIDANUSVOID
ZOAZOA
6dF LOCAL STRUCTURES
CETUSVOID
LOCALVOID
O
AQUARIUSVOID
MICROSCOPIUMVOID
SCULPTORVOID
V1
V3
V5
V6
V7V8
V9
V10
V11
V13
V14
100 M pc
SGX = -2000
ERIDANUSVOID
ZOAZOA
6dF LOCAL STRUCTURES
LOCALVOID
O
DRACO VOID
AQUARIUSVOID
MICROSCOPIUMVOID
SCULPTORVOID
HYDRACLUSTER
V8
V9
V10
V11
V12
V13
V14V16V17
V18
100 M pc
SGX = -2500
ERIDANUSVOID
ZOAZOA
6dF LOCAL STRUCTURES
LOCALVOID
O
DRACO VOID
AQUARIUSVOID
MICROSCOPIUMVOID
A3698
V10
V11
V13
V14
V15
V16V17
V18
100 M pc
SGX = -3000
ZOAZOA
6dF LOCAL STRUCTURES
O
MICROSCOPIUMVOID
HYDRAVOID
A3565
CENTAURUS
CLUSTER
A3742
A3229
V14
V15
V16V17
V19
V20
V21
V22
100 M pc
SGX = -3500
ZOAZOA
6dF LOCAL STRUCTURES
O
MICROSCOPIUMVOID
HYDRAVOID
A3559
A3574
A3656
V14
V15
V16V17
V19
V20
V21
V22
100 M pc
SGX = -4000
ZOAZOA
6dF LOCAL STRUCTURES
O
MICROSCOPIUMVOID
HYDRAVOID
FURTHERCENTAURUS
A3537
V14V17
V19
V21
V22
100 M pc
SGX = -4500
ZOAZOA
6dF LOCAL STRUCTURES
O
A3627
V21
100 M pc
HYDRAVOID
SGX = -5000
ZOAZOA
6dF LOCAL STRUCTURES
O
HYDRAVOID
A3389V21
100 M pc
SGX = -5500
ZOAZOA
6dF LOCAL STRUCTURES
O
APUSVOID
A3581
V21
100 M pc
SGX = -6000
ZOAZOA
6dF LOCAL STRUCTURES
O
APUSVOID
100 M pc
End of sequence
