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  • Oral Qual: "Gas-phase Metallicity of Void Dwarf Galaxies"

    Tuesday, May 21, 2013

    2:00 PM-3:00 PM

    Disque Hall Room 919

    • Current Students
    • Faculty

    Graduate Student: Kelly A. Douglass

    Abstract: We study how the environment a ects 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 fi nd 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

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  • CoAS Honors Day

    Thursday, May 23, 2013

    2:00 PM-3:00 PM

    Behrakis Hall

    • Alumni
    • Current Students
    • Faculty
    • Parents & Families
    • Prospective Students
    • Public
    • Staff

    At the annual CoAS Honors Day, the College of Arts and Sciences recognizes and awards the hard work, dedication and accomplishments of CoAS students, as well as students from across the University.

    With over 2000 undergraduates in 16 diverse majors and nearly 40 minors, CoAS has evolved into one of the most diverse colleges at Drexel. Our enriching academic programs are enhanced by cutting-edge technology, hands-on experience, and a unique global perspective. As the Honors Day program will attest, the College of Arts and Sciences also enrolls many of Drexel's finest students.

    Invitations will be sent to honorees but ALL members of the Drexel community are invited to attend CoAS Honors Day.

    Reception to follow in Behrakis.

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