The UWISH2 extended H2 source catalogue
  We present the extended source catalogue for the UKIRT Widefield Infrared
Survey for H2 (UWISH2). The survey is unbiased along the inner Galactic Plane
from l \approx 357deg to l \approx 65deg and |b| < 1.5deg and covers 209 square
degrees. A further 42.0 and 35.5 square degrees of high dust column density
regions have been targeted in Cygnus and Auriga. We have identified 33200
individual extended H2 features. They have been classified to be associated
with about 700 groups of jets and outflows, 284 individual (candidate)
Planetary Nebulae, 30 Supernova Remnants and about 1300 Photo-Dissociation
Regions. We find a clear decline of star formation activity (traced by H2
emission from jets and photo-dissociation regions) with increasing distance
from the Galactic Centre. About 60% of the detected candidate Planetary Nebulae
have no known counterpart and 25% of all Supernova Remnants have detectable H2
emission associated with them.
