  We report the results of near infrared spectroscopy of 11 luminosity selected
candidate planetary mass objects (PMOs) in the Trapezium Cluster with Gemini
South/GNIRS and Gemini North/NIRI. 6 have spectral types >=M9, in agreement
with expectations for PMOs. 2 have slightly earlier types, and 3 are much
earlier types which are probably field stars. 4/6 sources with types >= M9 have
pseudo-continuum profiles which confirm them as low gravity cluster members.
The gravity status of the other cool dwarfs is less clear but these remain
candidate PMOs. The derived number fraction of PMOs with M=3-15 Mjup is 1-14%,
these broad limits reflecting the uncertainty in source ages. However, the
number fraction with M<20 Mjup is at least 5%. These detections add
significantly to the body of evidence that a planetary mass population is
produced by the star formation process.
