Spitzer Survey of Triggered Star Formation in the Carina Nebula

Details Spitzer Survey of Triggered Star Formation in the Carina Nebula Spitzer Survey of Triggered Star Formation in the Carina Nebula

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop.3420s&link_type=abstract

Spitzer Proposal ID #3420

Physics

Scientific paper

The Carina Nebula is arguably the best available laboratory for studying active star formation threatened by feedback from extremely massive stars, including several of the most luminous O-type stars known, WR stars, and Eta Carinae. It is close enough that we can study the low-mass stellar population, we can detect protoplanetary disks and jets, and we can spatially resolve individual stars, star-forming cores, and ultracompact HII regions. Thus, we can identify the dominant physical processes at work to gain insight to the detailed processes occurring in extragalactic starbursts. The main long-term goal is to determine if detailed models derived from study of Orion and Taurus can be applied in more extreme regions like Carina, or in what ways they need to be modified. We propose roughly 9 hours of Spitzer time using IRAC to survey 1.2 square degrees of the southern part of the Carina Nebula. This region is a vivid example of second-generation (possibly triggered) star formation, containing dozens of compact IR sources and giant dust pillars that point toward Eta Carinae. A large IR survey like this is not feasible with ground- based instrumentation, and the relatively low spatial resolution of MSX or IRAS is of limited usefulness in such a complex region. Our proposed survey will be fully-sampled and confusion limited in the IRAC bands, and will provide an excellent compliment to the GLIMPSE legacy program, which does not include the Carina Nebula.

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