Other
Scientific paper
Sep 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop...53r&link_type=abstract
Spitzer Proposal ID #53
Other
Scientific paper
This proposal is designed to address several different scientific topics, the unifying theme of which is the search for and observation of nearby, very cold, dusty sources. We plan an imaging survey of pre-stellar cores to search for lower luminosity and/or younger sources than have been found in the IRAS and ISO data. Recent comparisons of pre-stellar and proto-stellar cores have indicated that they have fundamentally different structures: pre-stellar cores have not yet developed steep density gradients near their centers. These results were inferred from sub-millimeter observations of flux gradients in pre- and proto-stellar cores. MIPS has the capability for not only measuring flux gradients, but also temperature gradients and thus measuring much more directly the density gradients of the young cores to see whether this conclusion holds up. We plan an SED survey of some proto-stellar and pre-stellar cores to measure temperature and density gradients. Finally, MIPS is ideally suited to mapping far-infrared color temperatures, which we propose to do in a small number of clouds that have been well studied in the near-infrared and at other wavelengths. These data can be used to study the grain properties in the clouds.
Keene Jocelyn
Rieke George
No associations
LandOfFree
Pre-stellar and Proto-stellar Cores and Cold Dust does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Pre-stellar and Proto-stellar Cores and Cold Dust, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pre-stellar and Proto-stellar Cores and Cold Dust will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1823351