CLEAR II: Evidence for Early Formation of the Most Compact Quiescent Galaxies at High Redshift

Understand

The origin of the correlations between mass, morphology, quenched fraction, and formation history in galaxies is difficult to define, primarily due to the uncertainties in galaxy star-formation histories.

• Star-formation histories are better constrained for higher redshift galaxies, observed closer to their formation and quenching epochs.
• Here we use &#34;non-parametric&#34; star-formation histories and a nested sampling method to derive constraints on the formation and quenching timescales of quiescent galaxies at $0.7<z<2.5$.
• We model deep HST grism spectroscopy and photometry from the CLEAR (CANDELS Lyman$-\alpha$ Emission at Reionization) survey.