E+A Galaxies in and Around Nearby Rich Clusters of Galaxies
We have spectroscopically identified 600 new E+A galaxies and candidates across 16 fields totaling roughly 480 square degrees in the Sloan Digital Sky Survey. E+A galaxies are post-starburst systems that have undergone a significant burst of star formation within the past 1–2 Gyr and are now fully q...
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| Veröffentlicht in: | Research notes of the AAS 2021-03, Vol.5 (3), p.67 |
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| creator | Falcone, Julia Wurmser, Serena Kerrison, Nicole Greenfield, Spencer Joyce, Maya L. Liu, Allen G. Marinelli, Mariarosa Ostling, William Quayum, Rafid Williams, Rosemary H. Liu, Charles T. |
| description | We have spectroscopically identified 600 new E+A galaxies and candidates across 16 fields totaling roughly 480 square degrees in the Sloan Digital Sky Survey. E+A galaxies are post-starburst systems that have undergone a significant burst of star formation within the past 1–2 Gyr and are now fully quenched. They comprise a small population that is key to understanding the transition from star-forming to quiescent galaxies. Our survey focused on four nearby rich clusters of galaxies and their surroundings: Virgo, Coma, Leo, and Hercules. 356 candidates were identified in the clusters, and an additional 244 were identified in control fields or otherwise outside cluster bounds. Understanding the distribution and dynamics of the E+As has the potential to shed light on the evolutionary mechanisms present within nearby cluster environments. In this note, we give a brief overview of our selection processes and locations, and report on ongoing analyses of the sample. |
| doi_str_mv | 10.3847/2515-5172/abf1f6 |
| format | Article |
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| subjects | E+A galaxies Galaxy clusters Galaxy evolution Galaxy quenching Post-starburst galaxies Quenched galaxies |
| title | E+A Galaxies in and Around Nearby Rich Clusters of Galaxies |
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