Skip to main content

Research Repository

Advanced Search

A survey of molecular hydrogen in the central galaxies of cooling flows

Edge, A.C.; Wilman, R.J.; Johnstone, R.M.; Crawford, C.S.; Fabian, A.C.; Allen, S.W.


R.J. Wilman

R.M. Johnstone

C.S. Crawford

A.C. Fabian

S.W. Allen


RJ Wilman


We present a large sample of H- and K-band spectra of 32 optically line-luminous central cluster galaxies. We find significant rovibrational H2 emission in 23 of these galaxies as well as H recombination and/or [FeII] emission in another five. This represents a fourfold increase in the number of molecular line detections known. A number of the detections are of extended emission (5-20 kpc). In several objects we find significant [SiVI] emission that appears to correlate with the strength of high ionization lines in the optical (e.g. [OIII]). This comprehensive sample builds on previous work and confirms that warm (1000-2500 K) molecular hydrogen is present wherever there is ionized material in the cores of cooling flows and in most cases it also coincides with CO molecular line emission.


Edge, A., Wilman, R., Johnstone, R., Crawford, C., Fabian, A., & Allen, S. (2002). A survey of molecular hydrogen in the central galaxies of cooling flows. Monthly Notices of the Royal Astronomical Society, 337(1), 49-62.

Journal Article Type Article
Publication Date 2002-11
Deposit Date Apr 28, 2008
Publicly Available Date Apr 28, 2008
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Royal Astronomical Society
Peer Reviewed Peer Reviewed
Volume 337
Issue 1
Pages 49-62
Keywords Active galaxies, Clusters, Cooling flows, Galaxies, Elliptical, Lenticular, CD, Infrared.


You might also like

Downloadable Citations