학술논문
Noema formIng Cluster survEy (NICE): Discovery of a starbursting galaxy group with a radio-luminous core at z=3.95
Document Type
Working Paper
Author
Zhou, Luwenjia; Wang, Tao; Daddi, Emanuele; Coogan, Rosemary; Sun, Hanwen; Xu, Ke; Arumugam, Vinodiran; Jin, Shuowen; Liu, Daizhong; Lu, Shiying; Sillassen, Nikolaj; Wang, Yijun; Shi, Yong; Zhang, Zhi-Yu; Tan, Qinghua; Gu, Qiusheng; Elbaz, David; Bail, Aurelien Le; Magnelli, Benjamin; Gómez-Guijarro, Carlos; d'Eugenio, Chiara; Magdis, Georgios E.; Valentino, Francesco; Ji, Zhiyuan; Gobat, Raphael; Delvecchio, Ivan; Xiao, Mengyuan; Strazzullo, Veronica; Finoguenov, Alexis; Schinnerer, Eva; Rich, R. Michael; Huang, Jiasheng; Dai, Yu; Chen, Yanmei; Gao, Fangyou; Yang, Tiancheng; Hao, Qiaoyang
Source
A&A, 684, A196 (2024)
Subject
Language
Abstract
The study of distant galaxy groups and clusters at the peak epoch of star formation is limited by the lack of a statistically and homogeneously selected and spectroscopically confirmed sample. Recent discoveries of concentrated starburst activities in cluster cores have opened a new window to hunt for these structures based on their integrated IR luminosities. Hereby we carry out the large NOEMA (NOrthern Extended Millimeter Array) program targeting a statistical sample of infrared-luminous sources associated with overdensities of massive galaxies at z>2, the Noema formIng Cluster survEy (NICE). We present the first result from the ongoing NICE survey, a compact group at z=3.95 in the Lockman Hole field (LH-SBC3), confirmed via four massive (M_star>10^10.5M_sun) galaxies detected in CO(4-3) and [CI](1-0) lines. The four CO-detected members of LH-SBC3 are distributed over a 180 kpc physical scale, and the entire structure has an estimated halo mass of ~10^13Msun and total star formation rate (SFR) of ~4000Msun/yr. In addition, the most massive galaxy hosts a radio-loud AGN with L_1.4GHz, rest = 3.0*10^25W/Hz. The discovery of LH-SBC3 demonstrates the feasibility of our method to efficiently identify high-z compact groups or forming cluster cores. The existence of these starbursting cluster cores up to z~4 provides critical insights into the mass assembly history of the central massive galaxies in clusters.
Comment: 10 pages, 8 figures, published by A&A
Comment: 10 pages, 8 figures, published by A&A