The Shapes of Miras

Details The Shapes of Miras The Shapes of Miras

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.6302t&link_type=abstract

American Astronomical Society, AAS Meeting #211, #63.02; Bulletin of the American Astronomical Society, Vol. 39, p.853

Astronomy and Astrophysics

Astronomy

Scientific paper

Three moveable telescopes operating at mid-IR wavelengths and with heterodyne detection are used for interferometry and phase closure for measurement of the sizes, shapes, variations in size, and surrounding dust shells of old stars, with some emphasis on Miras. Baselines vary from 4 meters to 75 meters and are in a variety of directions. It is found that IR radiation from some stars does not correspond to circularity and some stars are even asymmetric. Dust shell productions are often separated by several years.

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