Program: GN-2010B-Q-79
Title: | Follow-up of Candidate Dual AGN Galaxies with Longslit Spectroscopy |
PI: | Julia Comerford |
Co-I(s): | Brian Gerke, Michael Cooper, Jeffrey Newman, Marc Davis |
Abstract
Observations have established that some galaxies harbor two widely spaced supermassive black
holes (so-called dual SMBHs) as a result of a recent merger. A statistical study of such systems
would have important implications for galaxy evolution, SMBH growth, and future gravitational
wave experiments, but identifying dual SMBHs in large numbers is challenging. A promising
spectroscopic detection technique has recently been suggested, which searches for double-peaked
emission lines indicating two active nuclei orbiting in a single galaxy. More study is needed,
however, to differentiate between the spectroscopic signature of dual SMBHs and that of ionized
outflowing gas. We propose observations that aim to test and refine the spectroscopic technique
for dual-SMBH detection by comparing the two-dimensional spectra of several double-peaked AGN
sources to each other and to a lower-redshift sample. Our goal is to develop
and establish a spectroscopic signature for dual SMBHs that can be used to identify a statistically
interesting sample.
Publications using this program's data
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[data]
[ADS] The Origin of Double-peaked Narrow Lines in Active Galactic Nuclei. IV. Association with Galaxy Mergers