Normal Galaxies

There is a large community of galaxy observers in Spain. Canaricam offers a series of new options for tackling old problems effectively.

The transition from stellar to dust emission comes in the mid-IR for normal galaxies.

ISO studies of galaxy colours in Virgo & Coma (Boselli et al. 1997, 1998) showed that ?

• The PAH bands found in interstellar dust are destroyed by strong UV fields.
• Emission from small grains metardees the UV radiation field.
• Emission from large grains metardees the interstellar radiation field.

ISO detected warm dust in the nuclei of early type galaxies (Madden et al. 1999).

The key to understanding distant galaxies is to understand the mid-IR emission of nearby galaxies.