| |
 |
| Paper: |
Dry Mergers and the Size Evolution of Early-type Galaxies |
| Volume: |
453, Advances in Computational Astrophysics: Methods, Tools, and Outcome |
| Page: |
233 |
| Authors: |
Nipoti, C. |
| Abstract: |
Dry (i.e. dissipationless) merging has been proposed as the main
driver of the observed size evolution of early-type galaxies (ETGs).
The actual role of this mechanism is questioned by the tightness of
the local stellar mass-size relation of ETGs. Combining this observed
scaling law with simple merging models, which should bracket
cosmologically motivated merging histories, we draw the following
conclusions: 1) local massive ETGs can have assembled at most ∼
45% of their stellar mass via dry mergers; 2) extreme fine tuning is
required for this to be the case. |
|
|
|
|
|
