The Darkest Cloud: An IRAC/MIPS survey of the Pipe Nebula

Details The Darkest Cloud: An IRAC/MIPS survey of the Pipe Nebula The Darkest Cloud: An IRAC/MIPS survey of the Pipe Nebula

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop20119l&link_type=abstract

Spitzer Proposal ID #20119

Computer Science

Scientific paper

We propose to use Spitzer to perform an IRAC/MIPS imaging survey of the Pipe Nebula, the massive dark cloud complex which is nearest the Sun. Lacking the most obvious signposts of star formation, such as HII regions, reflection nebulae, etc., this cloud appears to be a prime and rare example of a massive molecular cloud in a very early stage of evolutionary development. The primary goal of this survey will be to obtain a complete census of protostellar and star formation activity in this extremely young cloud. This data will be combined with the results of a major observational program we have been conducting to map and measure the structure of the entire cloud complex, including all its dense cores, using deep near-infrared extinction observations obtained from the ground. The synthesis of the extinction and Spitzer data will used to construct a detailed empirical picture of the earliest stages of dense core and protostellar evolution. As a secondary goal we also intend to use the proposed Spitzer observations, in conjunction with the near-infrared observations, to constrain the 1-8 micron extinction law in the cloud and to measure the extinction in the most opaque (Av > 40 mag) dense cores, which cannot be penetrated by ground-based observations alone.

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