Re: uniqueness of cluster ellipticals

From: prme (prme@kromos.jpl.nasa.gov)
Date: Tue Jan 24 2006 - 13:45:18 PST

  • Next message: Mike Gladders: "Re: uniqueness of cluster ellipticals"

    I think this is dangerous terrain: Mark Sullivan's poster on SNe rates
    vs. host properties talks about two opos of Ia's, one associated
    with active SF galaxies, the other with quiescent E's. The dust free
    Ia's are more likely to be those associated with the quiescent
    progenitors, whereas the interaction enhanced rates are likely
    associated with SF and dust. Dust in E's is also associated with
    optical emission, and emission is associated with radio loud galaxies
    as has been said. I think we should *not* claim that we expect
    a higher SNIa rate in cluster E's than field E's because
    a) I think this is not the case
    b) it may lead to questions about the dust-free claim, which is
    fundamental to the proposal.

    Peter Eisenhardt



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