From: Marc Postman (postman@stsci.edu)
Date: Tue Jan 24 2006 - 13:09:09 PST
Yes true - do you also see a higher fraction of [OII} emission for
ellipticals not in the cluster but at those same redshifts? I believe
we saw some evidence for this in Postman, Lubin, Oke 2001.
On Jan 24, 2006, at 4:00 PM, Lori Lubin wrote:
> Hi Marc,
>
> That is very interesting. It should be noted (though probably not in
> this proposal) that about 60% of the spectroscopically-confirmed
> red-sequence galaxies in the ACS field of CL1604+4304 at z = 0.9 show
> detectable [OII] emission in our DEIMOS spectra. This suggests at
> least some star formation in the cluster early-types at these
> redshifts. it is important to get high S/N and
> high-spectral-resolution spectroscopy to quantify this accurately.
>
> Cheers,
> Lori
>
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Marc Postman Email: postman@stsci.edu
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