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 Keck-I MOSFIRE near-infrared spectroscopy for a sample of 13compact star-forming galaxies (SFGs) at redshift $2\leq z \leq2.5$ with starformation rates of SFR$\sim$100M$_{\odot}$ y$^{-1}$ and masses oflog(M/M$_{\odot}$)$\sim10.8$. Their high integrated gas velocity dispersions of$\sigma_{\rm{int}}$=230$^{+40}_{-30}$ km s$^{-1}$, as measured from emissionlines of H$_{\alpha}$ and [OIII], and the resultantM$_{\star}-\sigma_{\rm{int}}$ relation and M$_{\star}$$-$M$_{\rm{dyn}}$ allmatch well to those of compact quiescent galaxies at $z\sim2$, as measured fromstellar absorption lines. Since log(M$_{\star}$/M$_{\rm{dyn}}$)$=-0.06\pm0.2$dex, these compact SFGs appear to be dynamically relaxed and more evolved,i.e., more depleted in gas and dark matter ($<$13$^{+17}_{-13}$\%) than theirnon-compact SFG counterparts at the same epoch. Without infusion of externalgas, depletion timescales are short, less than $\sim$300 Myr. This discoveryadds another link to our new dynamical chain of evidence that compact SFGs at$z\gtrsim2$ are already losing gas to become the immediate progenitors ofcompact quiescent galaxies by $z\sim2$.

Keck-I MOSFIRE spectroscopy of compact star-forming galaxies at z$\gtrsim$2: High velocity dispersions in progenitors of compact quiescent galaxies