Skip to main content Accessibility help
×
Home

Clustering Properties of Cold Dark Matter Universes and the CFA Redshift Survey: A Uniform Comparison

  • Richard Nolthenius (a1) and Simon White (a1)

Extract

We have compared the properties of galaxy groups in the CfA redshift survey to those in the cold dark matter simulations of Davis, Efstathiou, Frenk and White (1985). Redshift catalogs (four realizations) were made from the open universe (unbiased; mass follows light) simulations at expansion factors of 1.8 (Ω=.3, labelled T1) and 3.2 (Ω=.2, labeled T2) relative to initial conditions, and from the biased formation version of the Ω=1 simulation (5 realizations) at expansion factor 1.4. The T1, T2 and biased catalog sets were volume limited at distances of 5000, 3000 and 6500 km s−1 respectively, and magnitude limited (m≤14.5) beyond. They were then randomly culled by 25%, 9% and 10%, respectively, to match the density of comparison versions of the CfA Redshift Survey which were similarly volume limited. We have devised a percolation type grouping algorithm which lets the linking distance on the sky increase with distance in the magnitude limited regions, while keeping the radial velocity linking criteria fixed. We've verified that this produces groups with density contrast uncorrelated with distance and (unlike the Geller-Huchra criteria) M/L uncorrelated with group size for the open models. M/L may, however, show a slight negative correlation with distance.

    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Clustering Properties of Cold Dark Matter Universes and the CFA Redshift Survey: A Uniform Comparison
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Clustering Properties of Cold Dark Matter Universes and the CFA Redshift Survey: A Uniform Comparison
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Clustering Properties of Cold Dark Matter Universes and the CFA Redshift Survey: A Uniform Comparison
      Available formats
      ×

Copyright

References

Hide All
Davis, M., Efstathiou, G., Frenk, C., and White, S. D. M., 1985, Ap. J. 292, 371
Geller, M. J. and Huchra, J., 1983, Ap. J Supp. 22, 61

Clustering Properties of Cold Dark Matter Universes and the CFA Redshift Survey: A Uniform Comparison

  • Richard Nolthenius (a1) and Simon White (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed