Physics
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009phdt........13p&link_type=abstract
Proquest Dissertations And Theses 2009. Section 0128, Part 0606 211 pages; [Ph.D. dissertation].United States -- Michigan: Mich
Physics
1
Star Formation, Ionized Gas, Magellanic Clouds, Orion Nebula, H Ii Regions
Scientific paper
Regions of recent or ongoing star formation often contain massive stars capable of ionizing the surfaces of nearby molecular clouds. These layers of ionized gas, called H II regions, produce emission lines that serve as beacons of star formation as we look out into distant parts of our Galaxy and the universe. The complex physical processes of star formation are responsible for the chemical and structural evolution of galaxies throughout the history of the universe on many size scales. Light and winds from massive stars heat and compress nearby clouds, acting to simultaneously inhibit and enhance further star formation. To disentangle the importance of competing processes such as photoionization, supernovae, stellar winds, magnetic fields, radiation pressure, I have studied the dominant physical processes in nearby H II regions to determine the relative contribution of each feedback mechanism as a function of star formation intensity. The Orion Nebula is an H II region that is visible to the naked eye. Due to its proximity to the Sun and brightness, it has been studied extensively in all wavelengths. It is dominated by a single O star and offers the least complex environment to compare with models of H II regions. The most complex site of star formation in the local universe is 30 Doradus in the Large Magellanic Cloud. Hundreds of O stars dominated a region thousands of times larger than the Orion Nebula. Together these two examples provide the constraints necessary to quantify stellar feedback on different scales.
No associations
LandOfFree
Scaling stellar feedback: A study of the physical processes involved in star-forming regions of vastly different sizes 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 Scaling stellar feedback: A study of the physical processes involved in star-forming regions of vastly different sizes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scaling stellar feedback: A study of the physical processes involved in star-forming regions of vastly different sizes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1074534