SETI public: Anyone looking for Dyson Shells?

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From: LARRY KLAES (ljk4_at_msn.com)
Date: Wed Aug 24 2005 - 16:05:00 UTC

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    http://arxiv.org/abs/astro-ph/0508453

    Astrophysics, abstract
    astro-ph/0508453
    From: Andrew Clarke [view email]
    Date (v1): Mon, 22 Aug 2005 13:58:08 GMT (565kb)
    Date (revised v2): Tue, 23 Aug 2005 09:49:19 GMT (565kb)

    Tycho 2 stars with infrared excess in the MSX Point Source Catalogue

    Authors: A.J. Clarke, R.D. Oudmaijer, S.L Lumsden

    Comments: Added Comment: 16 pages, 9 figures, accepted for publication in
    MNRAS

    Stars of all evolutionary phases have been found to have excess infrared
    emission due to the presence of circumstellar material. To identify such
    stars, we have positionally correlated the infrared MSX point source
    catalogue and the Tycho 2 optical catalogue. A near/mid infrared colour
    criteria has been developed to select infrared excess stars. The search
    yielded 1938 excess stars, over half (979) have never previously been
    detected by IRAS. The excess stars were found to be young objects such as
    Herbig Ae/Be and Be stars, and evolved objects such as OH/IR and carbon
    stars.

    A number of B type excess stars were also discovered whose infrared colours
    could not be readily explained by known catalogued objects.

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