Journal article

Alma Observations of Massive Molecular Gas Filaments Encasing Radio Bubbles in the Phoenix Cluster

HR Russell, M McDonald, BR McNamara, AC Fabian, PEJ Nulsen, MB Bayliss, BA Benson, M Brodwin, JE Carlstrom, AC Edge, J Hlavacek-Larrondo, DP Marrone, CL Reichardt, JD Vieira

Astrophysical Journal | IOP Publishing | Published : 2017


We report new ALMA observations of the CO(3-2) line emission from the 2.1 ± 0.3 × 1010 M⊙ molecular gas reservoir in the central galaxy of the Phoenix cluster. The cold molecular gas is fueling a vigorous starburst at a rate of 500-800 M⊙ yr-1 and powerful black hole activity in the forms of both intense quasar radiation and radio jets. The radio jets have inflated huge bubbles filled with relativistic plasma into the hot, X-ray atmospheres surrounding the host galaxy. The ALMA observations show that extended filaments of molecular gas, each 10-20 kpc long with a mass of several billion solar masses, are located along the peripheries of the radio bubbles. The smooth velocity gradients and na..

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University of Melbourne Researchers


Awarded by ERC

Awarded by NASA

Awarded by Fermi Research Alliance, LLC

Awarded by STFC

Awarded by Australian Research Council's Discovery

Awarded by Science and Technology Facilities Council

Awarded by Directorate For Geosciences

Awarded by Office of Polar Programs (OPP)

Funding Acknowledgements

H.R.R. and A.C.F. acknowledge support from ERC Advanced Grant Feedback 340442. M.M. acknowledges support by NASA through contracts HST-GO-13456 (Hubble) and GO4-15122A (Chandra). B.R.M. acknowledges support from the Natural Sciences and Engineering Council of Canada and the Canadian Space Agency Space Science Enhancement Program. P.E.J.N. acknowledges support from NASA contract NAS8-03060. B.B. is supported by the Fermi Research Alliance, LLC under Contract No. De-AC02-07CH11359 with the United States Department of Energy. A.C.E. acknowledges support from STFC grant ST/L00075X/1. J.H.L. acknowledges support from the Natural Sciences and Engineering Council of Canada, the Canada Research Chairs program and the Fonds de recherche Nature et technologies. C.R. acknowledges support from the Australian Research Council's Discovery Projects funding scheme (DP150103208). We thank the reviewer for constructive comments, and H.R.R. thanks Adrian Vantyghem for helpful discussions. This paper makes use of the following ALMA data: ADS/JAO. ALMA 2013.1.01302.S. ALMA is a partnership of ESO (representing its member states), NSF (USA) and NINS (Japan), together with NRC (Canada), NSC and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO and NAOJ. The scientific results reported in this article are based on data obtained from the Chandra Data Archive.