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----- Attempting Submission 1 (Wed Sep 16 18:52:19 GMT 2020) -----
A CHANDRA LOOK AT VARIABILITY-SELECTED LOW-MASS AGN CANDIDATES
The population of massive black holes (BHs) in present day low-mass galaxies is an important constraint for models of black hole formation and growth. However, these systems are generally difficult to find. We have recently identified a population of low-mass galaxies (Mstar=5x10^7 - 5x10^9 Msun) with long-term optical photometric variability consistent with an active galactic nucleus (AGN). These systems tend to lack optical spectroscopic AGN signatures, indicating they may be AGN missed by standard selection techniques. We propose joint Chandra and HST observations of 9 nearby (z<0.02) low-mass galaxies with AGN-like variability to validate this selection technique, study accretion properties, and characterize host galaxies.
We will observe 9 low-mass galaxies with AGN-like variability signatures. We will use WFC3 IR and UVIS observations to analyze the morphologies and star formation properties of our targets. Specifically, we will observe in WFC3 IR/F110W and WFC3 UVIS/F300X and UVIS/F606W.
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