Sep 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop..218f&link_type=abstract
Spitzer Proposal ID #218
Physics
Scientific paper
The Trifid Nebula (M20) is a double-nebula, with a blue reflection nebula above a red ionized nebula, the latter being trisected by dark lanes. This observing program iamges the reflection and ionized nebulae and the dark lanes. The mid-infrared emission will trace the reflection nebula via aromatic hydrocarbon emissions and the dark lane via hot, small grains. Massive protostars have been detected in the dark lanes using submillimeter observations; the new mid-infrared observations will fully sample the lower-mass protostars. The Trifid is one of the youngest known HII regions, and the interaciton of its young, massive O-type star with its surrounding placental material is clearly affecting its ability to form new stars.
Fazio Giovanni
Reach William
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