IRAC and MIPS Imaging of High Mass Outlfows: Pobing the Role of Accretion and Clustering in Massive Star Formation

Details IRAC and MIPS Imaging of High Mass Outlfows: Pobing the Role of Accretion and Clustering in Massive Star Formation IRAC and MIPS Imaging of High Mass Outlfows: Pobing the Role of Accretion and Clustering in Massive Star Formation

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop.3528z&link_type=abstract

Spitzer Proposal ID #3528

Computer Science

Scientific paper

The research on massive star formation has advanced significant over the last decade via ground-based observations at the near-infrared and mm wavelengths. However, the important mid-infrared regime has been largely neglected. We propose to observe eight carefully selected regions of massive star formation, which have been studied extensively with mm-interferometers, with the IRAC and MIPS cameras to study the protostellar cluster and outflow properties. We will 1.) study outflow collimation using the highly excited CO fundamental band and compare the collimation with better understood low-mass outflows; 2) identify the outflow powering sources and derive their mid-infrared fluxes and luminosities. Correlations of these properties with the outflow properties derived from mm-interferometer observations will reveal whether massive outflows are scaled-up versions of their low-mass counterparts. 3.) observe the cluster properties down to the hydrogen-burning limit to study how much clustering affects the massive star-formation process. This proposal will allow us to address a highly controversial question: whether high-mass stars form via accretion processes similar to low-mass stars, or whether they form via collisional agglomeration of lower mass stars.

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