| Autor: |
Fagioli, Martina, Carollo, C. Marcella, Renzini, Alvio, Lilly, Simon J., Onodera, Masato, Tacchella, Sandro |
| Rok vydání: |
2016 |
| Předmět: |
|
| Druh dokumentu: |
Working Paper |
| DOI: |
10.3847/0004-637X/831/2/173 |
| Popis: |
We investigate the origin of the evolution of the population-averaged size of quenched galaxies (QGs) through a spectroscopic analysis of their stellar ages. The two most favoured scenarios for this evolution are either the size growth of individual galaxies through a sequence of dry minor merger events, or the addition of larger, newly quenched galaxies to the pre-existing population (i.e., a progenitor bias effect). We use the 20k zCOSMOS-bright spectroscopic survey to select bona fide quiescent galaxies at 0.2Comment: 20 pages, 12 figures, re-submitted to ApJ after referee report |
| Databáze: |
arXiv |
| Externí odkaz: |
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