The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 41 Issue 2
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- Pages.60.1-60.1
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- 2016
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- 1226-2692(pISSN)
Disruption time scale of merged halos in a dense cluster environment
- Shin, Jihye (Korea Intitute for Advanced Stuey) ;
- Taylor, James E. (Waterloo University) ;
- Peng, Eric (Kavli Institute for Astronomy and Astrophysics at Peking University)
- Published : 2016.10.12
Abstract
To obtain a reliable estimate of the cold dark matter (CDM) substructure mass function in a dense cluster environment, one needs to understand how long a merged halo can survive within the host halo. Measuring disruption time scale of merged halos in a dense cluster environment, we attempt to construct the realistic CDM mass function that can be compared with stellar mass functions to get a stellar-to-halo mass ratio. For this, we performed a set of high-resolution simulations of cold dark matter halos with properties similar to the Virgo cluster. Field halos outside the main halo are detected using a Friend-of-Friend algorithm with a linking length of 0.02. To trace the sub-halo structures even after the merging with the main halo, we use their core structures that are defined to be the most 10% bound particles.
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