Other
Scientific paper
Sep 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop.3295s&link_type=abstract
Spitzer Proposal ID #3295
Other
Scientific paper
We propose infrared spectroscopic observations of the Galactic Center (GC) region of the Milky Way with the Infrared Spectrograph (IRS) on Spitzer Space Telescope. These observations will elucidate the character of the GC's massive star clusters and their effects - via both emitted radiation and outflowing winds - on the local interstellar medium (ISM) at the GC. The IRS enables access to a variety of infrared spectral signatures of the relevant processes - photoexcitation, shocks, photodissociation, and dust heating and extinction - which can clarify our understanding of the complex processes occurring at the heart of our own, and likely other, galaxies. Specific questions to be addressed are: -Are observable shocks due to outflows from the massive cluster stars or to collisions of molecular clouds? -Which of the radio structures are really related to the compact star clusters, as suggested by the observed morphology and how can we explain the structures not so related? -How does the gas excitation seen in the IR lines in the Arches Cluster correlate with the X-ray morphology, and can any excitation feature be identified with cluster WR stars?
Colgan Sean
Cotera Angela
Erickson Edwin
Hollenbach David
Kaufman Michael
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