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- W2949360575 endingPage "161" @default.
- W2949360575 startingPage "161" @default.
- W2949360575 abstract "Galaxy mass assembly is an end product of structure formation in the $Lambda$CDM cosmology. As an extension of Lee & Yi (2013), we investigate the assembly history of stellar components in galaxies as a function of halo environments and stellar mass using semi-analytic approaches. In our fiducial model, halo mass intrinsically determines the formation and assembly of the stellar mass. Overall, the ex situ fraction slowly increases in central galaxies with increasing halo mass but sharply increases for $log M_{*}/M_{odot}gtrsim11$. A similar trend is also found in satellite galaxies, which implies that mergers are essential to build stellar masses above $log M_{*}/M_{odot}sim11$. We also examine the time evolution of the contribution of mass growth channels. Mergers become the primary channel in the mass growth of central galaxies when their host halo mass begins to exceed $log M_{200}/M_{odot}sim13$. However, satellite galaxies seldom reach the merger-dominant phase despite their reduced star formation activities due to environmental effects." @default.
- W2949360575 created "2019-06-27" @default.
- W2949360575 creator A5054513897 @default.
- W2949360575 creator A5061195074 @default.
- W2949360575 date "2017-02-17" @default.
- W2949360575 modified "2023-10-18" @default.
- W2949360575 title "Formation and Assembly History of Stellar Components in Galaxies as a Function of Stellar and Halo Mass" @default.
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- W2949360575 doi "https://doi.org/10.3847/1538-4357/aa5b87" @default.
- W2949360575 hasPublicationYear "2017" @default.
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