Computer Science
Scientific paper
Sep 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop.3337c&link_type=abstract
Spitzer Proposal ID #3337
Computer Science
Scientific paper
We propose IRS spectroscopy and a small IRAC map of individual young, massive stars in the giant HII region G10.2-0.3 within the W31 star forming region. Previous K-band observations by our team have revealed the presence of O stars, massive young stellar objects, ultra-compact HII regions, and featureless red sources, i.e. a snapshot of the earliest stages of massive star birth in a cluster. What is the reason for these differences among the stellar content of this cluster? To make progress on our understanding of these very early evolution stages it is imperative to tease out the properties of the underlying stars. We can obtain the integrated luminosities from our K-band photometry, but stellar temperatures are more challenging, requiring an analysis of nebular fine structure MIR lines of neon and sulfur for which IRS spectroscopic datasets are critical. We can also study how the dust grains, possible mantled by ices, have been processed in dense disks around these massive young stellar objects, providing additional insights into the role that dust plays in young star forming regions.
Barbosa Cassio
Blum Robert
Conti Peter
Crowther P. P.
Morris Patrick
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