Abstract

The environments of evolved massive stars are being investigated in a major multi-wavelength program of optical, infrared and sub-millimeter observations. The overall intent of this program is to use the circumstellar environments of evolved massive stars to determine the properties of the most massive (>25M⊙) throughout their evolution. Here we present the results of an IRAS Sky Survey Atlas (ISSA) and IRAS high resolution (HIRES; Aumann et al., 1990) imaging survey at far-infrared wavelengths of the environments of 157 galactic Wolf-Rayet (WR) stars.

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