Physical properties of massive compact galaxies at high redshift

Lin Xiaozhi; Fan Lulu

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Physical properties of massive compact galaxies at high redshift

Lin Xiaozhi,Fan Lulu * #

Center for Astrophysics, University of Science and Technology of China, 230026 Hefei, China;Key Lab. For Research in Galaxies and Cosmology, USTC, CAS, 230026, Hefei, China

*Correspondence author

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Funding: 教育部博士点新教师基金（No.20123402120015）

Opened online:16 May 2016

Accepted by: none

Citation: Lin Xiaozhi,Fan Lulu.Physical properties of massive compact galaxies at high redshift[OL]. [16 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4686421

Recently, the massive galaxies at high redshift have been found to be more compact than their analogs at lower redshift. It is very important to help us understanding how they form and evolve by studying their physical properties. We combine high-resolution Hubble Space Telescope/WFC3 images with multi-wavelength photometry to track the evolution of structure and activity of massive (M > 10^{10} M_{odot} ) galaxies at redshifts (z=1-3) in the GOODS-S field of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) and the COSMOS/UltraVISTA field. We devide our compact samples into compact star-forming galaxies (cSFGs) and compact quiescent galaxies (cQGs) and find that cQGs at (1< z< 2) are very close to cSFGs at (2< z< 3) in morphology and color. Our result approve the model that quenched cSFGs fading into cQGs at (zsim2), and that cSFGs are likely progenitors of compact, quiescent, massive galaxies at (z=2-3).

Keywords:high redshift; galaxy structure; galaxy formation; galaxy evolution

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