Compact star forming galaxies as the progenitors of compact quiescent galaxies: Clustering result

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• 作者：Xiaozhi Lin^a ; Lulu Fan ; ^b ; ^a ; ^{llfan@sdu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Xu Kong^a ; ^{xkong@ustc.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Guanwen Fang^c
• 关键词：Galaxies ; high-redshift ; Galaxies ; evolution ; Galaxies ; structure
• 刊名：New Astronomy
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：51
• 期：Complete
• 页码：99-104
• 全文大小：665 K

文摘

We present a measurement of the spatial clustering of massive compact galaxies at 1.2 ≤ z ≤ 3 in CANDELS/3D-HST fields. We obtain the correlation length for compact quiescent galaxies (cQGs) at z   ∼ 1.6 of $r_0=7.1_{-2.6}^{+2.3}{\mathrm{h}}^{-1}\mathrm{Mpc}$ and compact star forming galaxies (cSFGs) at z   ∼ 2.5 of $r_0=7.7_{-2.9}^{+2.7}{\mathrm{h}}^{-1}\mathrm{Mpc}$ assuming a power-law slope γ=1.8$\gamma =1.8$. The characteristic dark matter halo masses M_H of cQGs at z ∼ 1.6 and cSFGs at z   ∼ 2.5 are $\sim 7.1\times {10}^{12}{h}^{-1}{M}_{\odot }$ and $\sim 4.4\times {10}^{12}{h}^{-1}{M}_{\odot },$ respectively. Our clustering result suggests that cQGs at z ∼ 1.6 are possibly the progenitors of local luminous ETGs and the descendants of cSFGs and SMGs at z > 2. Thus an evolutionary connection involving SMGs, cSFGs, QSOs, cQGs and local luminous ETGs has been indicated by our clustering result.