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The Arecibo Galaxy Environment Survey - II. A H i view of the Abell cluster 1367 and its outskirts

Cortese, Luca, Minchin, Robert Frank, Auld, Robbie Richard, Davies, Jonathan Ivor, Catinella, B., Momjian, E., Rosenberg, J. L., Taylor, Rhys, Gavazzi, G., O'Neil, K., Baes, M., Boselli, A., Bothun, G., Koribalski, B., Schneider, S. and van Driel, W. 2008. The Arecibo Galaxy Environment Survey - II. A H i view of the Abell cluster 1367 and its outskirts. Monthly Notices of the Royal Astronomical Society 383 (4) , pp. 1519-1537. 10.1111/j.1365-2966.2007.12664.x

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Abstract

We present 21 cm H i line observations of 5 × 1 deg2 centred on the local Abell cluster 1367 obtained as part of the Arecibo Galaxy Environment Survey. One hundred sources are detected (79 new H i measurements and 50 new redshifts), more than half belonging to the cluster core and its infalling region. Combining the H i data with Sloan Digital Sky Survey (SDSS) optical imaging, we show that our H i selected sample follows scaling relations similar to the ones usually observed in optically selected samples. Interestingly, all galaxies in our sample appear to have nearly the same baryon fraction independently of their size, surface brightness and luminosity. The most striking difference between H i and optically selected samples resides in their large-scale distribution: whereas optical and X-ray observations trace the cluster core very well, in H i there is almost no evidence of the presence of the cluster. Some implications on the determination of the cluster luminosity function and H i distribution for samples selected at different wavelength are also discussed.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Uncontrolled Keywords: Surveys ; Galaxies: clusters: individual: A1367 ; Galaxies: evolution ; Galaxies: peculiar ; Radio lines: galaxies
Publisher: Blackwell
ISSN: 0035-8711
Last Modified: 02 Feb 2018 23:27
URI: http://orca.cf.ac.uk/id/eprint/7274

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