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