Cold molecular gas in the Perseus cluster core - Association with X-ray cavity, Halpha filaments and cooling flow -
By P. Salomé, F. Combes, A. Edge, C. Crawford, M. Erlund, A. C. Fabian, N. Hatch, R. Johnstone, Jeremy S. Sanders, R. Wilman. 2006
173 citations recorded by the source corpus.
Cold molecular gas has been recently detected in several cooling flow clusters of galaxies where huge optical nebulosities often stand. These optical filaments are tightly linked to the cooling flow and to the related phenomena, like the rising bubbles of relativistic plasma, fed by the radio jets. We present here a map in the CO(2-1) rotational line of the cold molecular gas associated with some Halpha filaments surrounding the central galaxy of the Perseus cluster: NGC 1275. The map, extending to about 50 kpc (135 arcsec) from the center of the galaxy, has been made with the 18-receiver array HERA, at the focus of the IRAM 30m telescope. Although most of the cold gas is concentrated to the center of the galaxy, the CO emission is also clearly associated to the extended filaments conspicuous in ionised gas and could trace a possible reservoir fueling the star formation there. Some of the CO emission is also found where the X-ray gas could cool down more efficiently: at the rims of the central X-ray cavity (where the hot gas is thought to have been pushed out and compressed by the central AGN expanding radio lobes). The CO global kinematics does not show any rotation in NGC 1275. The cold gas is probably a mixture of gas falling down on the central galaxy and of uplifted gas dragged out by a rising bubble in the intracluster medium. As recenlty suggested in other cluster cores, the cold gas peculiar morphology and kinematics argue for the picture of an intermittent cooling flow scenario where the central AGN plays an important role.
Subfields: Astronomy and Astrophysics
View Paper: https://www.semanticscholar.org/paper/3f8b30e431e498b46152fe49113ab5b797eff66b
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Astronomy and Astrophysics
Citations in the corpus
- Heating Hot Atmospheres with Active Galactic Nuclei (2007, background): “Most importantly, star formation rates approach or agree with the upper limits on cooling rates from XMM-Newton and Chandra (McNamara et al. 2004; Hicks & Mushotzky 2005; Rafferty et al. 2006; Salomé et al. 2006).”
- A deeper X‐ray study of the core of the Perseus galaxy cluster: the power of sound waves and the distribution of metals and cosmic rays (2007, background): “This is about 10 times more than is inferred from CO measurements (Salomé et al. 2006).”
- The ATLAS3D project – IV. The molecular gas content of early-type galaxies (2011, background): “The molecular gas masses detected here are, however, not quite in the same league as that of Perseus A (NGC 1275), which has some 1010 M of cold H2 (Salomé et al. 2006).”
- CAUSE AND EFFECT OF FEEDBACK: MULTIPHASE GAS IN CLUSTER CORES HEATED BY AGN JETS (2011, background): “Another case with substantial extended Hα emission is the Perseus cluster (Salomé et al. 2006; Fabian et al. 2008).”
- Collisional heating as the origin of filament emission in galaxy clusters (2008, background): “…C© 2008 RAS Downloaded from https://academic.oup.com/mnras/article-abstract/392/4/1475/965024 by guest on 28 July 2018 the origin, energy source and evolutionary history are important, in part because of the large mass that may be involved, as high as ∼4 × 1010 M according to Salomé et al. (2006).”
- Raining on black holes and massive galaxies: the top-down multiphase condensation model (2016, background): “AGN outflow uplift – not tested here – is possibly important to further enhance the triggering of multiphase condensation (Salomé et al. 2006; Brighenti et al. 2015; McNamara et al. 2016).”