The first 8-13 micron spectra of globular cluster red giants:   circumstellar silicate dust grains in 47 Tucanae (NGC 104)
  We present 8-13 micron spectra of eight red giants in the globular cluster 47 Tucanae (NGC 104), obtained at the European Southern Observatory 3.6m telescope. These are the first mid-infrared spectra of metal-poor, low-mass stars. The spectrum of at least one of these, namely the extremely red, large-amplitude variable V1, shows direct evidence of circumstellar grains made of amorphous silicate. 
Jacco Th. van Loon (Keele University, UK), Iain McDonald (Keele),   Joana M. Oliveira (Keele), A. Evans (Keele), Martha L. B...