학술논문
Size - Stellar Mass Relation and Morphology of Quiescent Galaxies at $z\geq3$ in Public $JWST$ Fields
Document Type
Working Paper
Author
Ito, Kei; Valentino, Francesco; Brammer, Gabriel; Faisst, Andreas L.; Gillman, Steven; Gomez-Guijarro, Carlos; Gould, Katriona M. L.; Heintz, Kasper E.; Ilbert, Olivier; Jespersen, Christian Kragh; Kokorev, Vasily; Kubo, Mariko; Magdis, Georgios E.; McPartland, Conor; Onodera, Masato; Rizzo, Francesca; Tanaka, Masayuki; Toft, Sune; Vijayan, Aswin P.; Weaver, John R.; Whitaker, Katherine E.; Wright, Lillian
Source
Subject
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Abstract
We present the results of a systematic study of the rest-frame optical morphology of quiescent galaxies at $z \geq 3$ using the Near-Infrared Camera (NIRCam) onboard $JWST$. Based on a sample selected by $UVJ$ color or $NUVUVJ$ color, we focus on 26 quiescent galaxies with $9.8<\log{(M_\star/M_\odot)}<11.4$ at $2.810.3$ implies that our size - stellar mass relations are below those at lower redshifts, with the amplitude of $\sim0.6\, {\rm kpc}$ at $M_\star = 5\times 10^{10}\, M_\odot$. This value agrees with the extrapolation from the size evolution of quiescent galaxies at $z<3$ in the literature, implying that the size of quiescent galaxies increases monotonically from $z\sim3-5$. Our sample is mainly composed of galaxies with bulge-like structures according to their median S\'ersic index and axis ratio of $n\sim3-4$ and $q\sim0.6-0.8$, respectively. On the other hand, there is a trend of increasing fraction of galaxies with low S\'ersic index, suggesting $3