@presentation {1484863,
	title = {E+A Galaxies in SDSS-IV MaNGA: An Excess In and Around the Coma Cluster},
	journal = {Astronomical Society Meeting Abstracts $\#$235},
	year = {2020},
	pages = {207.18},
	abstract = {E+A galaxies are post-starburst galaxies that have recently undergone quenching of their star formation and now lie in the {\textquotedblleft}green valley{\textquotedblright} transition zone, making them a valuable source for studying the evolution of galaxies. Using data from DR15 of the Sloan Digital Sky Survey, we analyzed a sample of 4,435 galaxies from the MaNGA (Mapping of Nearby Galaxies at APO) catalogue. We identified 52 E+A galaxies using their optical spectra, based on their spectral shape, u-r color, lack of Hα emission, and hydrogen Balmer absorption. We manually measured the equivalent widths of the Balmer absorption lines using PyRAF to overcome inconsistencies in the spectral synthesis modeling of these galaxies that underestimated their line strengths. Interestingly, we found that 27 of the 52 E+As are within 3 degrees projected distance from the center of the Coma Cluster and of comparable redshift to the cluster. The large number of E+As in and around the Coma Cluster hints at the influence of a dense galaxy environment on the formation of E+A galaxies, as has been suggested by previous authors, and the potential value of E+A galaxies as a diagnostic tool to study the formation of clusters. This work was supported by grant $\#$AST-1852355 from the National Science Foundation to the CUNY College of Staten Island and the American Museum of Natural History.},
	author = {S. Wurmser and et. al.}
}
