Quick Search:

uzh logo
Browse by:

Zurich Open Repository and Archive

Maintenance: Tuesday, July the 26th 2016, 07:00-10:00

ZORA's new graphical user interface will be relaunched (For further infos watch out slideshow ZORA: Neues Look & Feel). There will be short interrupts on ZORA Service between 07:00am and 10:00 am. Please be patient.

Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-48255

Anderhalden, D; Diemand, J (2011). The total mass of dark matter haloes. Monthly Notices of the Royal Astronomical Society, 414(4):3166-3172.

Accepted Version
View at publisher


The simple, conventional dark matter halo mass definitions commonly used in cosmological simulations ('virial' mass, FoF mass, M50, 100, 200, …) only capture part of the collapsed material and are therefore inconsistent with the halo mass concept used in analytical treatments of structure formation. Simulations have demonstrated that typical dark matter particle orbits extend out to about 90 per cent of their turnaround radius, which results in apocentre passages outside of the current 'virial' radius on the first and also on the second orbit. Here we describe how the formation history of haloes can be used to identify those particles which took part in the halo collapse, but are missed by conventional group finders because of their remote present location. These particles are added to the part of the halo already identified by FoF. The corrected masses of dark haloes are significantly higher (the median mass increase is 25 per cent) and there is a considerable shift of the halo mass function towards the Press and Schechter form. We conclude that meaningful quantitative comparisons between (semi-)analytic predictions of halo properties (e.g. mass functions, mass accretion rates, merger rates, spatial clustering, etc.) and simulation results will require using the same halo definition in both approaches.


18 citations in Web of Science®
15 citations in Scopus®
Google Scholar™



26 downloads since deposited on 18 Feb 2012
7 downloads since 12 months

Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute for Computational Science
Dewey Decimal Classification:530 Physics
Date:April 2011
Deposited On:18 Feb 2012 19:50
Last Modified:05 Apr 2016 14:55
ISSN:0035-8711 (P) 1365-2966 (E)
Additional Information:The definitive version is available at www3.interscience.wiley.com
Publisher DOI:10.1111/j.1365-2966.2011.18614.x
Related URLs:http://arxiv.org/abs/1102.5736

Users (please log in): suggest update or correction for this item

Repository Staff Only: item control page