Exceptional AGN-driven turbulence inhibits star formation in the 3C 326N radio-galaxy

Autor: Guillard, P., Boulanger, F., Lehnert, M. D., Forêts, G. Pineau des, Combes, F., Falgarone, E., Bernard-Salas, J.
Rok vydání: 2014
Předmět:
Zdroj: A&A 574, A32 (2015)
Druh dokumentu: Working Paper
DOI: 10.1051/0004-6361/201423612
Popis: We detect bright [CII]158$\mu$m line emission from the radio galaxy 3C 326N at z=0.09, which shows weak star formation ($SFR<0.07$M$_{\odot}$~yr$^{-1}$) despite having strong H$_2$ line emission and $2\times 10^9$M$_{\odot}$ of molecular gas. The [CII] line is twice as strong as the 0-0S(1) 17$\mu$m H$_2$ line, and both lines are much in excess what is expected from UV heating. We combine infrared Spitzer and Herschel data with gas and dust modeling to infer the gas physical conditions. The [CII] line traces 30 to 50% of the molecular gas mass, which is warm (70Comment: Accepted for publication in A&A. 15 pages, 8 figures. v2 with language editing and updated affiliations
Databáze: arXiv