Re: PHYS: dyson shell thermodynamics

Wei Dai (
Mon, 27 Oct 1997 01:31:59 -0800

On Fri, Oct 24, 1997 at 10:36:03PM -0800, Amara Graps wrote:
> For example, the four brightest infrared excess stars are
> alpha Lyr, alpha PsA, beta Pic, and eps Eri. Those four have
> dust temperatures (micron-sized dust around the star) of 85K, 60K, 110K, and
> 50K, respectively.
> So I don't think that something like this would be invisible to
> our current instrumentation.

Interesting. Would these stars have been found if their spectra didn't
also have higher frequency components? If we're to spend say 1 to 10
million dollars with best current technology on a dyson sphere search,
what is the radius in which we'd have a good chance of finding one if it