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Tony Fairall / University of Cape Town / Nov 06

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.

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Tony Fairall / University of Cape Town / Nov 06

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  1. 6dF VisualizationsSupergalactic Cartesian CoordinatesSGX Moving Slice1000 km/s thickSGX from 3000 to -6000in steps of 500 km/s(This version with labelled features)LOCAL NEIGHBOURHOOD Tony Fairall / University of Cape Town / Nov 06

  2. ‘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.

  3. PowerPoint presentation allows one to scroll forwards and backwards

  4. +SGY REFERENCEGRID 100 M pc +5000 0 -5000 O +SGZ -SGZ -SGY Looking in a negative SGX direction.This grid applies to all slides following.

  5. SGX = 3000 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 ZOA O ZOA 6dF LOCAL STRUCTURES Each slice is 1000 km/s thick.

  6. SGX = 2500 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 ZOA O ZOA 6dF LOCAL STRUCTURES 100 M pc

  7. SGX = 2000 Newly identified voids (numbered from V1 to V526) labelled in this colour 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 ZOA O ZOA V1 V2 6dF LOCAL STRUCTURES 100 M pc

  8. SGX = 1500 Previously catalogued voids (e.g. Fairall 1998) labelled in this colour 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 ZOA O ZOA V1 V2 COLUMBA VOID 6dF LOCAL STRUCTURES 100 M pc

  9. SGX = 1000 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 ZOA O ZOA CANIS MAJOR VOID V1 V2 AQUARIUS VOID COLUMBA VOID 6dF LOCAL STRUCTURES 100 M pc

  10. SGX = 500 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 ZOA O ZOA ORION VOID CANIS MAJOR VOID F O R N A X W A L L V1 AQUARIUS VOID COLUMBA VOID 6dF LOCAL STRUCTURES 100 M pc

  11. SGX = 0 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 V4 V3 ZOA OUR GALAXY ZOA LOCAL VOID CANIS MAJOR VOID F O R N A X W A L L V1 ERIDANUS VOID AQUARIUS VOID COLUMBA VOID 6dF LOCAL STRUCTURES 100 M pc

  12. SGX = -500 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 V6 V5 CRATER V4 V3 ZOA O ZOA LOCAL VOID VOLANS MICROSCOPIUM VOID CETUS VOID CANIS MAJOR VOID FORNAX CLUSTER F O R N A X W A L L A3354 V1 ERIDANUS VOID AQUARIUS VOID COLUMBA VOID 6dF LOCAL STRUCTURES 100 M pc ERIDANUS VOID

  13. SGX = -1000 V6 V5 V3 ZOA O ZOA LOCAL VOID MICROSCOPIUM VOID CETUS VOID CANIS MAJOR VOID F O R N A X W A L L V1 ERIDANUS VOID AQUARIUS VOID SCULPTOR VOID 6dF LOCAL STRUCTURES 100 M pc

  14. SGX = -1500 V14 V9 V10 V6 V5 V7 V8 V11 V3 ZOA O ZOA LOCAL VOID MICROSCOPIUM VOID CETUS VOID V13 V1 ERIDANUS VOID AQUARIUS VOID SCULPTOR VOID 6dF LOCAL STRUCTURES 100 M pc

  15. SGX = -2000 V17 V16 V14 HYDRA CLUSTER V9 V10 V12 V8 V11 ZOA O ZOA LOCAL VOID MICROSCOPIUM VOID V13 DRACO VOID ERIDANUS VOID V18 AQUARIUS VOID SCULPTOR VOID 6dF LOCAL STRUCTURES 100 M pc

  16. SGX = -2500 V17 V16 V14 V10 V15 V11 ZOA O ZOA LOCAL VOID MICROSCOPIUM VOID V13 DRACO VOID ERIDANUS VOID V18 AQUARIUS VOID A3698 6dF LOCAL STRUCTURES 100 M pc

  17. SGX = -3000 HYDRA VOID V17 V16 V14 A3565 CENTAURUS CLUSTER V15 ZOA O ZOA MICROSCOPIUM VOID V19 V20 V21 A3229 V22 A3742 6dF LOCAL STRUCTURES 100 M pc

  18. SGX = -3500 HYDRA VOID V17 V16 V14 A3559 A3574 V15 ZOA O ZOA MICROSCOPIUM VOID V19 V20 V21 A3656 V22 6dF LOCAL STRUCTURES 100 M pc

  19. SGX = -4000 HYDRA VOID A3537 V17 V14 FURTHER CENTAURUS ZOA O ZOA MICROSCOPIUM VOID V19 V21 V22 6dF LOCAL STRUCTURES 100 M pc

  20. SGX = -4500 HYDRA VOID ZOA O ZOA A3627 V21 6dF LOCAL STRUCTURES 100 M pc

  21. SGX = -5000 HYDRA VOID ZOA O ZOA A3389 V21 6dF LOCAL STRUCTURES 100 M pc

  22. SGX = -5500 A3581 ZOA O ZOA V21 APUS VOID 6dF LOCAL STRUCTURES 100 M pc

  23. SGX = -6000 ZOA O ZOA APUS VOID 6dF LOCAL STRUCTURES 100 M pc

  24. End of sequence

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