论文标题
k-clash：$ z \大约0.2 $ - $ 0.6 $的现场和集群环境中的空间分辨星系星系
K-CLASH: spatially-resolving star-forming galaxies in field and cluster environments at $z \approx 0.2$-$0.6$
论文作者
论文摘要
我们介绍了KMOS-CLASH（K-CLASH）调查，这是对191（主要是蓝色）H $α$α$α$α$α$ 0.2 $ 0.2 \ LISHSIM Z \ simeSim Z \ simsim 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ 0.6 $ n $ a band spectraph仪（KMOS）调查。 K-Clash在四个集群镜头和超新星调查中靶向星系，并在KMOS $ iz $ -band中使用Hubble（Clash）字段，超过$ 7'$ RADIUS（$ \ of of2 $ - $ 3 $ 3 $ MPC）。 K-clash的目的是研究从$ z \ 1 $ - $ 3 $的动荡，高度恒星形成的圆盘状和特殊系统的过渡到相对静止的，以$ z \ y $ z \ 0 $的订购的晚期星系的订购，并检查了$ z $ z $ z $ z $ y $ 1的作用。在本文中，我们描述了K-Clash调查，介绍样本，并提供K-Clash Galaxy属性的概述。我们证明了我们的样本包括恒星质量和时代的恒星星系，均属于田间和群集环境。我们得出的结论是K-Clash提供了理想的样本，以弥合现有的大型和较低红移的现有大型积分光谱调查之间的差距。我们发现，中间红移的星形K-clash簇星系系统在系统上的恒星质量低于其田间形成的恒星质量，这暗示了在这些时代的簇中可能的“缩减”星系生长的“缩小”场景。 We measure no difference between the star-formation rates of H$α$-detected, star-forming galaxies in either environment after accounting for stellar mass, suggesting that cluster quenching occurs very rapidly during the epochs probed by K-CLASH, or that star-forming K-CLASH galaxies in clusters have only recently arrived there, with insufficient time elapsed for quenching to have occured.
We present the KMOS-CLASH (K-CLASH) survey, a K-band Multi-Object Spectrograph (KMOS) survey of the spatially-resolved gas properties and kinematics of 191 (predominantly blue) H$α$-detected galaxies at $0.2 \lesssim z \lesssim 0.6$ in field and cluster environments. K-CLASH targets galaxies in four Cluster Lensing And Supernova survey with Hubble (CLASH) fields in the KMOS $IZ$-band, over $7'$ radius ($\approx2$-$3$ Mpc) fields-of-view. K-CLASH aims to study the transition of star-forming galaxies from turbulent, highly star-forming disc-like and peculiar systems at $z\approx1$-$3$, to the comparatively quiescent, ordered late-type galaxies at $z\approx0$, and to examine the role of clusters in the build-up of the red sequence since $z\approx1$. In this paper, we describe the K-CLASH survey, present the sample, and provide an overview of the K-CLASH galaxy properties. We demonstrate that our sample comprises star-forming galaxies typical of their stellar masses and epochs, residing both in field and cluster environments. We conclude K-CLASH provides an ideal sample to bridge the gap between existing large integral-field spectroscopy surveys at higher and lower redshifts. We find that star-forming K-CLASH cluster galaxies at intermediate redshifts have systematically lower stellar masses than their star-forming counterparts in the field, hinting at possible "downsizing" scenarios of galaxy growth in clusters at these epochs. We measure no difference between the star-formation rates of H$α$-detected, star-forming galaxies in either environment after accounting for stellar mass, suggesting that cluster quenching occurs very rapidly during the epochs probed by K-CLASH, or that star-forming K-CLASH galaxies in clusters have only recently arrived there, with insufficient time elapsed for quenching to have occured.
