Herschel/PACS observations of the 69 $\mu m$ band of crystalline olivine around evolved stars

J. A. D. L. Blommaert, B. L. de Vries, L. B. F. M. Waters +15

We present 48 Herschel/PACS spectra of evolved stars in the wavelength range of 67-72 $\mu$m. This wavelength range covers the 69 $\mu$m band of crystalline olivine ($\text{Mg}_{2-2x}\…