Refining the E+A Galaxy: A Spatially Resolved Spectral Analysis & Synthesis of Nearby Post-Starburst Systems in SDSS-IV MaNGA (MPL-5)
Abstract
Using data from the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) Survey (MaNGA Product Launch-5), in the Sloan Digital Sky Survey (SDSS-IV), we identified 29 post-starburst (E+A) systems, all of which lie within the Green Valley. We identify E+A candidates by single fiber spectra, u-r color, and spatially resolved spectral line-indices, but our work also examines the spectra in each spaxel to determine how well the E+A classification holds throughout the galaxy. We found that our sample of E+As exhibit post-starburst properties across the entire galaxy, not just in the single-fiber region. Our sample has a wide range of morphologies, including barred spirals, reinforcing the view that E+A morphology is not confined to ellipticals. Our sample will be a tested to examine star formation history and quenching properties in E+A galaxies, and investigate their role in galaxy evolution as a whole.
- Publication:
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American Astronomical Society Meeting Abstracts #233
- Pub Date:
- January 2019
- Bibcode:
- 2019AAS...23314506G