Other
Scientific paper
Nov 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005phdt.........7y&link_type=abstract
PhD dissertation, Proquest Dissertations And Theses 2005. Section 0227, Part 0606 208 pages; [Ph.D. dissertation].United State
Other
1
Star Formation, Protostellar, Molecular Clouds
Scientific paper
Astronomers use many different methods to study the process of star formation. This thesis describes four studies that, utilize a variety of techniques to probe the physical conditions of star formation. Dust continuum observations compared with models reveal the density distributions and masses of regions of massive clustered star formation. We compare the results to regions where lower mass stars form as well as star formation in other galaxies. Molecular line observations of formaldehyde toward pre-protostellar cores are able to probe the initial conditions for star formation and, paired with models, show that formaldehyde is depleted within the densest inner regions of the cores. We use far-infrared maps of the large molecular cloud Chamaeleon II to identify young stellar objects that have infrared excesses, including two not previously known. The distribution of dense clumps of gas and dust, sites of star formation, in the Ophiuchus molecular cloud is shown in a large 1 mm dust continuum map. Each study addresses a unique question in the study of star formation, however, all work toward the goal of developing a better and more comprehensive picture of how a star is created from a cloud of gas and dust.
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