Computer Science
Scientific paper
Jul 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006hst..prop10797j&link_type=abstract
HST Proposal ID #10797. Cycle 15
Computer Science
Scientific paper
We propose to obtain a deep NICMOS image of the bright z=0.285 quasar HE0450-2958 that has an exceptional, undetected host galaxy, at least 6 times fainter than expected for the quasar luminosity. Several mutually exclusive explanations that were put forward in the last weeks, attempting to explain the apparently undermassive host galaxy, have important implication for their respective areas: The host could be a dust obscured ultra-luminous infrared galaxy in transition to become a quasar, HE450-2958 could have a normal host galaxy but an undermassive central black hole, or the quasar could recently have been ejected from a nearby companion galaxy in a 3-body black hole interaction or by gravitational recoil. We want to use NIC2 with the minimum-background F160W filter to obtain a >=10 times fainter limit on the host galaxy mass than is currently available with ACS, in order to set strong constraints for these very important scenarios.
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