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

Xiaozhi Lin; Lulu Fan; Xu Kong; Guanwen Fang

doi:10.1016/j.newast.2016.08.013

paper

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

arXiv:1609.01014 · doi:10.1016/j.newast.2016.08.013

Abstract

We present a measurement of the spatial clustering of massive compact galaxies at $1.2 \leq z \leq 3$ in CANDELS/3D-HST fields. We obtain the correlation length for compact quiescent galaxies (cQGs) at $z \sim 1.6$ of $r_{0} = 7. 1_{- 2.6}^{+ 2.3} h^{- 1} M p c$ and compact star forming galaxies (cSFGs) at $z \sim 2.5$ of $r_{0} = 7. 7_{- 2.9}^{+ 2.7} h^{- 1} M p c$ assuming a power-law slope $γ = 1.8$ . The characteristic dark matter halo masses $M_{H}$ of cQGs at $z \sim 1.6$ and cSFGs at $z \sim 2.5$ are $\sim 7.1 \times 1 0^{12} h^{- 1} M_{⊙}$ and $\sim 4.4 \times 1 0^{12} h^{- 1} M_{⊙}$ , respectively. Our clustering result suggests that cQGs at $z \sim 1.6$ 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.

20 pages, 5 figures

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

Abstract

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