NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-07-20 T18:01:19 PDT
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For refcode 2000MNRAS.314..324C:
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NED Abstract

Copyright by Royal Astronomical Society. 2000MNRAS.314..324C Galaxy destruction and diffuse light in clusters Carlos Calcaneo-Roldan, Ben Moore, Joss Bland-Hawthorn, David Malin and Elaine M. Sadler Accepted 1999 December 9. Received 1999 November 4; in original form 1998 August 11 ABSTRACT Deep images of the Centaurus and Coma clusters reveal two spectacular arcs of diffuse light that stretch for over 100 kpc, yet are just a few kiloparsecs wide. At a surface brightness of m_b_ ~ 27-28 mag arcsec^-2^, the Centaurus arc is the most striking example known of structure in the diffuse light component of a rich galaxy cluster. We use numerical simulations to show that the Centaurus feature can be reproduced by the tidal debris of a spiral galaxy that has been tidally disrupted by the gravitational potential of NGC 4709. The surface brightness and narrow dimensions of the diffuse light suggest that the disc was corotating with its orbital path past pericentre. Features this prominent in clusters will be relatively rare, although at fainter surface brightness levels the diffuse light will reveal a wealth of structure. Deeper imaging surveys may be able to trace this feature for several times its presently observed extent, and somewhere along the tidal debris, a fraction of the original stellar component of the disc will remain bound, but transformed into a faint spheroidal galaxy. It should be possible to confirm the galactic origin of the Centaurus arc by observing planetary nebulae along its length with redshifts close to that of NGC 4709. Keywords: methods: numerical - galaxies: clusters: general - galaxies: clusters: individual: Centaurus - galaxies: evolution - galaxies: formation - galaxies: interactions
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