Cold molecular gas in cooling flow clusters of galaxies
نویسندگان
چکیده
The results of a CO line survey in central cluster galaxies with cooling flows are presented. Cold molecular gas is detected with the IRAM 30m telescope, through CO(1-0) and CO(2-1) emission lines in 6-10 among 32 galaxies. The corresponding gas masses are between 3.10 and 4.10 M . These results are in agreement with recent CO detections by Edge (2001). A strong correlation between the CO emission and the Hα luminosity is also confirmed. Cold gas exists in the center of cooling flow clusters and these detections may be interpreted as an evidence of the long searched very cold residual of the hot cooling gas.
منابع مشابه
ar X iv : a st ro - p h / 03 10 71 2 v 1 2 4 O ct 2 00 3 CO emission associated with a cooling flow
1 Abstract The existence of cooling flows in the center of galaxy clusters has always been a puzzle, and in particular the fate of the cooling gas, since the presence of cold gas has never been proven directly. X-ray data from the satellites Chandra and XMM-Newton have constrained the amount of cooling, and it was realized that feedback and heating from a central AGN and its jets could reduce t...
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