Carnage in the Coma Cluster

Details Carnage in the Coma Cluster Carnage in the Coma Cluster

Feb 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999noao.prop..348w&link_type=abstract

NOAO Proposal ID #1999A-0348

Physics

Scientific paper

Deep R-band images of the core of the Coma cluster that we obtained with the KPNO Burrell Schmidt revealed several large (20-100 kpc), irregular, low surface brightness (LSB) features which appear to be the remains of tidally disrupted galaxies (Gregg & West 1998, Nature, in press). The existence of these large LSB objects suggests that there may be many more smaller tidal features waiting to be discovered, but the limited resolution and S/N of our Schmidt data make it impossible to reliably identify them. In order to better characterize the known LSB features and to search for additional tidal debris on smaller scales, we obtained very deep R-band images of the Coma core using the 0.9m + Mosaic 8K with engineering grade chips last observing season. We request time this year with the science-grade chips to obtain matching B- band observations to obtain colors for the LSB structures. These observations will also allow detailed study of the very large scale distribution of intracluster light and its photometric properties. The nature of the LSB light on all scales will reveal much about galaxy interactions and evolution in the Coma cluster. We request 3 additional nights for H(alpha) imaging to map the distribution of star formation in Coma and environs.

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