Chandra Imaging of NGC 922 -- the closest collisional ring galaxy

Details Chandra Imaging of NGC 922 -- the closest collisional ring galaxy Chandra Imaging of NGC 922 -- the closest collisional ring galaxy

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008hst..prop11836p&link_type=abstract

HST Proposal ID #11836. Cycle 17

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Scientific paper

Ultra Luminous X-ray sources {ULX} have luminosities many times the Eddington limit for a stellar black hole and are associated with massive star formation. This is illustrated by the Chandra image of the Cartwheel, a collisional ring galaxy. The bulk of the X-ray luminosity is produced by 16 ULX co-incident with the outer ring of star formation. We request Chandra and HST time to image another collisional ring galaxy NGC 922. NGC 922 is similar to the Cartwheel, except that it is nearly three times closer and has higher metallicity. We will {1} detect fainter sources than was possible for the Cartwheel, {2} use archival HST data and our new Halpha images to associate X-ray sources with tracers of star formation and {3} study the effect of metallicity on the formation of ULX.;

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