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The Department of Physics at Drexel is a close-knit, supportive community. Students have the opportunity to work side-by-side with their professors, and even to get published as an undergraduate.
The Joseph R. Lynch Observatory houses the largest telescope in Philadelphia. And it's just one of the many research facilities and laboratories available to Drexel physics students.
Virtually every course integrates classroom theory with hands-on computer simulations and technology. This approach gives the students ability to solve real-world problems using state-of-the-art techniques.
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Tuesday, May 21, 2013
2:00 PM-3:00 PM
Disque Hall Room 919
Graduate Student: Kelly A. DouglassAbstract: We study how the environment aects galaxy evolution in the Universe by comparing the metallicities of galaxies in voids with similar-sized galaxies in more dense regions. We estimate the metallicity of 1429 void dwarf galaxies and 2563 non-void dwarf galaxies using data from the SDSS DR7. Ratios of the fluxes of emission lines, particularly those of the forbidden [OIII] and [SII] transitions, provide estimates of a region's electron temperature and number density. From these two quantities and the emission line intensities, we estimate the abundance of oxygen. We find very little difference between the two sets of galaxies. Comparison of metallicity with galaxy color also shows little difference between the two samples. Further study is needed to develop a reliable method for calculating the metallicity of metal-poor galaxies.Advisor: Dr. Michael S. Vogeley
Thursday, May 23, 2013
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Joseph R. Lynch Observatory
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