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Resolving molecular gas in the central galaxies of cooling flow clusters

Edge, A.C.; Frayer, D.T.


D.T. Frayer


We present aperture synthesis images of the CO (1-0) line emission in five central galaxies in cooling flow clusters using the Owens Valley Millimeter Array. Three of the five sources are significantly resolved, but the majority of the emission is from a compact (<20 kpc) region centered on the central galaxy. These results are consistent with the newly emerging view that cooling flows deposit much less gas over a shorter period in a smaller volume than previously thought. The size constraints derived imply that the molecular gas has a large (>1022 cm-2) column density. We review the implications of these results and the prospects for observations in the near future.


Edge, A., & Frayer, D. (2003). Resolving molecular gas in the central galaxies of cooling flow clusters. Astrophysical Journal Letters, 594(1), L13-L17.

Journal Article Type Article
Publication Date 2003-09
Deposit Date May 20, 2008
Journal Astrophysical Journal Letters
Print ISSN 2041-8205
Electronic ISSN 2041-8213
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 594
Issue 1
Pages L13-L17
Keywords Cooling flows, Galaxies, X-ray, Thermal emission, High-resolution, Star-clusters, XMM-Newton, Hydra-A, NGC-1275, Chandra, Abell-1795, Accretion.