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21 September 2007 Interferometry on stars at mid-infrared wavelengths
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The ISI (Infrared Stellar Interferometer), an interferometer operating at mid-infrared wavelengths will be discussed, including both the instrumentation and results of stellar measurements. The ISI operates in the 10 micron wavelength region using three movable telescopes and heterodyne detection with CO2 laser local oscillators. Phase closure allows rather complete imaging of stars and their dust shells, including measurement of asymmetries. Measurements have been conducted of the emission of material from stars, some ejected at very high velocity, the size and change of size of some stars, stellar ellipticity, and stellar asymmetry. Material blown off from stars is often emitted in periodic shells, and frequently asymmetric.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
K. Tatebe, D. D. S. Hale, and C. H. Townes "Interferometry on stars at mid-infrared wavelengths", Proc. SPIE 6678, Infrared Spaceborne Remote Sensing and Instrumentation XV, 66781G (21 September 2007);


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