Pith. sign in

REVIEW

A Massive, Cooling-Flow-Induced Starburst in the Core of a Highly Luminous Galaxy Cluster

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 1208.2962 v1 pith:2F5NCVW5 submitted 2012-08-14 astro-ph.CO

A Massive, Cooling-Flow-Induced Starburst in the Core of a Highly Luminous Galaxy Cluster

M. McDonald , M. Bayliss , B. A. Benson , R. J. Foley , J. Ruel , P. Sullivan , S. Veilleux , K. A. Aird
show 78 more authors
M. L. N. Ashby M. Bautz G. Bazin L. E. Bleem M. Brodwin J. E. Carlstrom C. L. Chang H. M. Cho A. Clocchiatti T. M. Crawford A. T. Crites T. de Haan S. Desai M. A. Dobbs J. P. Dudley E. Egami W. R. Forman G. P. Garmire E. M. George M. D. Gladders A. H. Gonzalez N. W. Halverson N. L. Harrington F. W. High G. P. Holder W. L. Holzapfel S. Hoover J. D. Hrubes C. Jones M. Joy R. Keisler L. Knox A. T. Lee E. M. Leitch J. Lieu M. Lueker D. Luong-Van A. Mantz D. P. Marrone J. J. McMahon J. Mehl S. S. Meyer E. D. Miller L. Mocanu J. J. Mohr T. E. Montroy S. S. Murray T. Natoli S. Padin T. Plagge C. Pryke T. D. Rawle C. L. Reichardt A. Rest M. Rex J. E. Ruhl B. R. Saliwanchik A. Saro J. T. Sayre K. K. Schaffer L. Shaw E. Shirokoff R. Simcoe J. Song H. G. Spieler B. Stalder Z. Staniszewski A. A. Stark K. Story C. W. Stubbs R. Suhada A. van Engelen K. Vanderlinde J. D. Vieira A. Vikhlinin R. Williamson O. Zahn A. Zenteno
This is my paper
classification astro-ph.CO
keywords clustercoolinggalaxycoolcentralclusterscoreflow
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
0 comments
read the original abstract

In the cores of some galaxy clusters the hot intracluster plasma is dense enough that it should cool radiatively in the cluster's lifetime, leading to continuous "cooling flows" of gas sinking towards the cluster center, yet no such cooling flow has been observed. The low observed star formation rates and cool gas masses for these "cool core" clusters suggest that much of the cooling must be offset by astrophysical feedback to prevent the formation of a runaway cooling flow. Here we report X-ray, optical, and infrared observations of the galaxy cluster SPT-CLJ2344-4243 at z = 0.596. These observations reveal an exceptionally luminous (L_2-10 keV = 8.2 x 10^45 erg/s) galaxy cluster which hosts an extremely strong cooling flow (dM/dt = 3820 +/- 530 Msun/yr). Further, the central galaxy in this cluster appears to be experiencing a massive starburst (740 +/- 160 Msun/yr), which suggests that the feedback source responsible for preventing runaway cooling in nearby cool core clusters may not yet be fully established in SPT-CLJ2344-4243. This large star formation rate implies that a significant fraction of the stars in the central galaxy of this cluster may form via accretion of the intracluster medium, rather than the current picture of central galaxies assembling entirely via mergers.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.