Abstract
The young infrared cluster in Mon R2 has been observed at wavelengths from 30 microns to 1 mm and at angular resolutions from 16 arcsec to 1 arcmin. The brightest sources - RS 1 and IRS 3 - have luminosities equivalent to those of early B-type stars. It is not possible to estimate reliably the evolutionary stage of IRS 3, but IRS 1 appears to be powered by a star close to B0 V. The star probably dominates the energetics of the cluster. The gas density estimated from the infrared and radio molecular data is much larger than that of the associated, extended H II region. This appears consistent with the idea that the ionized zone is expanding out from the back of the molecular cloud.
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