Mapping the cold dust in edge-on galaxies at 1.2 mm wavelength
  Using the IRAM 30-m telescope, we have mapped the 1.2mm continuum emission in NGC 891, NGC 5907 and NGC 4565. In particular this latter galaxy shows a weak, extended plateau that is correlated with HI in addition to the central peak and ring structure common to all these spirals. Moreover, the outer part of this dust emission of NGC 4565 is clearly warped. The average dust temperature in the outer parts is 15 K and the derived dust absorption cross section is very close to that predicted for the local diffuse clouds. 
N. Neininger (IRAM France and MPIfR Bonn) and M. Guelin (IRAM France)