An Arecibo HI λ21-cm Absorption Survey of Rich Abell Clusters

Details An Arecibo HI λ21-cm Absorption Survey of Rich Abell Clusters An Arecibo HI λ21-cm Absorption Survey of Rich Abell Clusters

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1035..214h&link_type=abstract

THE EVOLUTION OF GALAXIES THROUGH THE NEUTRAL HYDROGEN WINDOW. AIP Conference Proceedings, Volume 1035, pp. 214-217 (2008).

Physics

Galaxy Clusters, Radio Telescopes And Instrumentation, Heterodyne Receivers, Spectroscopy And Spectrophotometry, Interstellar Medium And Nebulae In External Galaxies, Distances, Redshifts, Radial Velocities, Spatial Distribution Of Galaxies, X-Ray Sources, X-Ray Bursts, Origin, Formation, Evolution, Age, And Star Formation

Scientific paper

We present the results of a search for cold neutral hydrogen and OH molecules in 85 rich Abell clusters of galaxies. The spectra were taken towards radio-loud galaxies near the cluster centers using the Arecibo 305-m radio telescope. A wide spectrometer bandwidth was used to ensure that the entire velocity range of the infall region was covered by the recorded spectra (i.e., +/-5000 km s-1). To minimize the effects of bandpass ripples, the sources were observed in the double-position-switched mode. We detected HI in several clusters, some in emission, some in absorption.

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