Cosmic mass accretion history of satellites around a dwarf galaxy

  • Chun, Kyungwon (School of Space Research, Kyung Hee University) ;
  • Shin, Jihye (School of Physics, Korea Institute for Advanced Study) ;
  • Kim, Sungsoo S. (School of Space Research, Kyung Hee University)
  • 발행 : 2017.04.10

초록

We aim to trace cosmic mass accretion history of satellites around a dwarf galaxy in Lambda-CDM cosmology frame. Each satellite has a unique mass accretion history due to different environment, potential depth, and different merging events. We perform three different zoom simulations whose target galaxy has a mass of ${\sim}10^{10}Msun$, using ~17 million particles covering a cubic box of $1(Mpc/h)^3$. Here, individual particle masses for dark matter (DM) and gas are $M_{DM}=4.1{\times}10^3Msun$ and $Mgas=7.9{\times}10^2Msun$, respectively, and thus each satellite can be resolved with more than several hundreds of particles.

키워드