Program: GN-2020A-FT-204
Title: | Origin of the extreme broad emission in three metal-poor galaxies |
PI: | Colin Burke |
Co-I(s): | Xin Liu, Tony Chen, Hengxiao Guo |
Abstract
Izotov & Thuan (2008) selected four metal-poor dwarf galaxies with extraordinarily luminous broad Balmer emission which persisted for over a decade. These authors suggested the broad emission are due to an AGN, however no characteristic X-ray emission was found (Simmonds et al. 2018). This sample is either an extraordinary new class of dwarf AGN which lack X-ray emission, or rare very long-lived core-collapse supernovae. Recent work suggests in some cases, broad Balmer emission may persist for over a decade years in the latter scenario. Therefore, our goal is to determine if the broad H-alpha emission is constant or faded 4-5 years after the most recent spectral epochs.
Publications using this program's data
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[data]
[ADS] On the AGN nature of broad balmer emission in four low-redshift metal-poor galaxies