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29 March 2024
 
  » arxiv » astro-ph/0206379

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A survey of molecular hydrogen in the central galaxies of cooling flows
A. C. Edge ; R. J. Wilman ; R. M. Johnstone ; C. S. Crawford ; A. C. Fabian ; S. W. Allen ;
Date 21 Jun 2002
Journal Mon.Not.Roy.Astron.Soc. 337 (2002) 49
Subject astro-ph
Affiliation2,3), R. M. Johnstone , C. S. Crawford , A. C. Fabian , S. W. Allen ( Durham, IoA Cambridge, Leiden
AbstractWe present a large sample of H- and K-band spectra of 32 optically line luminous central cluster galaxies. We find significant rovibrational H_2 emission in 23 of these galaxies as well as H recombination and/or [FeII] emission in another 5. 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 (1000-2500K) 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.
Source arXiv, astro-ph/0206379
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