1. A visual comparison between mock catalogues and 6dF data
Work in progress
A visual comparison between mock catalogues and 6dF data
Mock catalogues from Shaun Cole, Durham Astrophysics Theory group and VIRGO consortium
The surfaces shown enclose minimal spanning trees formed by a maximum percolation distance of 100 km/s and with a minimum of 50 member galaxies. The view is towards the South Celestial Pole, Northern Galactic Hemisphere to the left, Southern Galactic Hemisphere towards the right. The 6dF data (early 2005) used here is a bit thin towards the centre (i.e. towards the SCP).
The images can, if necessary, be viewed in 3D with ChromoDepth spectacles. Otherwise depth can be perceived by white=near, blue=far.
Tony Fairall, Department of Astronomy, University of Cape Town.
Feb 2006 using ‘Labyrinth’ software developed by Carl Hultquist
And Samesham Perumal.

2. General views

3. Mock 1 general
6dF

4. Mock 2 general
6dF

5. Mock 3 general
6dF

6. 6dF
Mock 4 general

7. 6dF
Mock 5 general

8. 6dF
Mock 6 general

9. Mock 7 general
6dF

10. Mock 8 general
6dF

11. Mock 9 general
6dF

12. 6dF
Mock 10 general

13. Comments: The general similarity of texture speaks well for the simulations, and the differences are often more subtle than obvious. Void sizes is one discriminator, proportion of open space another.
Not knowing the parameters of the mock catalogues, I could take an unbiased view. The best match in my opinion was with Mock catalogue number 2.

14. Close-up views

15. Mock 1 Close up
6dF

16. 6dF
Mock 2
Close up

17. Mock 3
Close up
6dF

18. 6dF
Mock 4
Close up

19. Mock 5
Close up
6dF

20. 6dF
Mock 6
Close up

21. 6dF
Mock 7
Close up

22. 6dF
Mock 8
Close up

23. 6dF
Mock 9
Close up

24. Mock 10
Close up
6dF

25. In general the mock catalogues seem ‘too busy’ compared to 6dF
In general the mock catalogues seem ‘too busy’ compared to 6dF. 6dF shows much more open space. Mock catalogue 1 seems the best fit.

26. Very close up

27. 6dF
Mock 1
Very close

28. Mock 2
Very close
6dF

29. Mock 3
Very close
6dF

30. Mock 4
Very close
6dF

31. Mock 5
Very close
6dF

32. Mock 6
Mock 6
Very close
6dF

33. Mock 7
Very close
6dF

34. Mock 8
Very close
6dF

35. Mock 9
Very close
6dF

36. Mock 10
Very close
6dF

37. In general, the mock catalogues seem too crowded, and have far too little open spaces, compared to 6dF. The Mock catalogues suggest a fractal structure that repeats on ever smaller scales, while 6dF seems to ‘go no further’.
Best match, in my opinion, would be Mock catalogue 1.