English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present a study on the stellar mass growth of the progenitors of localmassive galaxies with a variety of number density selections with$n\le1\times10^{-4}\,\rm{Mpc^{-3}}$ (corresponding to$M_*=10^{11.24}\rm{M_{\odot}}$ at z=0.3) in the redshift range $0.3<z<3.0$. Weselect the progenitors of massive galaxies using a constant number densityselection, and one which is adjusted to account for major mergers. We find thatthe progenitors of massive galaxies grow by a factor of four in total stellarmass over this redshift range. On average the stellar mass added via theprocesses of star formation, major and minor mergers account for $24\pm8\%$,$17\pm15\%$ and $34\pm14\%$, respectively, of the total galaxy stellar mass at$z=0.3$. Therefore $51\pm20\%$ of the total stellar mass in massive galaxies at$z=0.3$ is created externally to their z=3 progenitors. We explore theimplication of these results on the cold gas accretion rate and size evolutionof the progenitors of most massive galaxies over the same redshift range. Wefind an average gas accretion rate of $\sim66\pm32\,\rm{M_{\odot}yr^{-1}}$ overthe redshift range of $1.5<z<3.0$. We find that the size evolution of a galaxysample selected this way is on average lower than the findings of otherinvestigations.

Minor vs Major Mergers: The Stellar Mass Growth of Massive Galaxies from z=3 using Number Density Selection Techniques