Computer Science
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991hst..prop.2801s&link_type=abstract
HST Proposal ID #2801
Computer Science
Hst Proposal Id #2801
Scientific paper
It is proposed to image the arc in the galaxy cluster 2244-02 to search for evidence that it is composed of stars and not a gravitationally lensed background galaxy, as currently thought. A galaxy collision model has been found that appears able to explain both the morphology of the arc and also possibly the color and brightness. This collision model also fits with the newly discovered double radio source in this cluster. The model suggests that the amount of intracluster gas passing through the arc is sufficient to account for the observed luminosity if a reasonable fraction of it were converted into high mass stars. One of the goals is to look for any trace of nebulosity along the edge of the arc that would indicate that such gas is actually being collected. If the model is verified it would be the first case of propagating star formation in an intracluster medium. High spatial resolution is needed so the HST WF/PC would be used.
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