Cool Stars 14 - Submitted Abstract # 349
This version created on 05 October 2006

The Trapezium Cluster IMF


Fiona Riddick, Penn State University
Kevin Luhman, Penn State University

We have conducted a spectroscopic survey of ~80  low-mass M-type stars
and brown dwarfs in the Trapezium Cluster in Orion.  At these low
masses, mass tracks are nearly vertical on the H-R diagram therefore
spectral types should be well correlated with mass.  This allows the
distribution of spectral types from different star-forming regions to
be used to compare their IMFs.  From optical spectra we assess cluster
membership probability for the objects and determine spectral types,
which are in the range M0.5-8.5.  We compare the IMF obtained in this
way with those seen in other star-forming regions such as IC 348 and
Taurus.  

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