English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present deep Chandra, XMM-Newton, Giant Metrewave Radio Telescope andHalpha observations of the group-group merger NGC 6338. X-ray imaging andspectral mapping show that as well as trailing tails of cool, enriched gas, thetwo cool cores are embedded in an extensive region of shock heated gas withtemperatures rising to ~5 keV. The velocity distribution of the member galaxiesshow that the merger is occurring primarily along the line of sight, and weestimate that the collision has produced shocks of Mach number M=2.3 orgreater, making this one of the most violent mergers yet observed betweengalaxy groups. Both cool cores host potential AGN cavities and Halpha nebulae,indicating rapid radiative cooling. In the southern cool core around NGC 6338,we find that the X-ray filaments associated with the Halpha nebula have lowentropies (<10 kev cm^2) and short cooling times (~200-300 Myr). In thenorthern core we identify an Halpha cloud associated with a bar of dense, coolX-ray gas offset from the dominant galaxy. We find no evidence of current jetactivity in either core. We estimate the total mass of the system and find thatthe product of this group-group merger will likely be a galaxy cluster.

Building a cluster: shocks, cavities, and cooling filaments in the group-group merger NGC 6338