论文标题
Z〜2的大规模静态星系的基本平面
The Fundamental Plane of Massive Quiescent Galaxies at z~2
论文作者
论文摘要
我们使用最大的大型静态星系样本（迄今为止$ 1.5 <z <2.5 $）检查了基本飞机（FP）和质量与光比（$ m/l $）的比例（$ m/l $）。 The FP ($r_{e}, σ_{e}, I_{e}$) is established using $19$ $UVJ$ quiescent galaxies from COSMOS with $Hubble$ $Space$ $Telescope$ $(HST)$ $H_{F160W}$ rest-frame optical sizes and X-shooter absorption line measured stellar velocity dispersions.对于非常庞大的，$ {\ rm {log}}（m _ {\ ast}/m _ {\ odot}）> 11.26 $，从Stockmann等人的$ z> 2 $的8个静态星系的子集。 （2020年），我们表明它们不能被动地演变为局部昏迷的关系，并且必须经历重大的结构进化，以模仿局部大型星系的大小。从$ z = 2 $到当今的FP和$ m/l $缩放关系的演变与恒星种群的被动衰老以及昏迷集群中最大的星系和其他大规模调查中其他大型椭圆星系中最大的星系相一致。对小合并的亮度演变进行建模增加了恒星种群，有利于与“干”静态星系合并的历史。
We examine the Fundamental Plane (FP) and mass-to-light ratio ($M/L$) scaling relations using the largest sample of massive quiescent galaxies at $1.5<z<2.5$ to date. The FP ($r_{e}, σ_{e}, I_{e}$) is established using $19$ $UVJ$ quiescent galaxies from COSMOS with $Hubble$ $Space$ $Telescope$ $(HST)$ $H_{F160W}$ rest-frame optical sizes and X-shooter absorption line measured stellar velocity dispersions. For a very massive, ${\rm{log}}(M_{\ast}/M_{\odot})>11.26$, subset of 8 quiescent galaxies at $z>2$, from Stockmann et al. (2020), we show that they cannot passively evolve to the local Coma cluster relation alone and must undergo significant structural evolution to mimic the sizes of local massive galaxies. The evolution of the FP and $M/L$ scaling relations, from $z=2$ to present-day, for this subset are consistent with passive aging of the stellar population and minor merger structural evolution into the most massive galaxies in the Coma cluster and other massive elliptical galaxies from the MASSIVE Survey. Modeling the luminosity evolution from minor merger added stellar populations favors a history of merging with "dry" quiescent galaxies.
