Mathematics – Logic
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21714239p&link_type=abstract
American Astronomical Society, AAS Meeting #217, #142.39; Bulletin of the American Astronomical Society, Vol. 43, 2011
Mathematics
Logic
Scientific paper
We present results from optical data analysis of the active galactic nucleus (AGN) host galaxy 0402+379. This AGN hosts two binary black holes, which have a projected separation of only 7.3 parsecs. This separation is two times closer than any other known system. The data were taken with WIYN in December 2008 in broadband filters g, r and i as well as in narrowband filters W13, W25, W26 and K814. We analyze the narrowband data to find regions of Hα, NII and SII emission, indicating star forming regions. We determine the stellar age distribution within the host galaxy from the g/r/i colors. We conclude that the morphology of the host galaxy is elliptical using De Vaucouleurs' Law with our calculated surface brightness. We use this morphological information to estimate the relative date of the merger to be approximately 2 Gyr ago. We also conclude that a third galaxy is interacting with the host galaxy, which may provide a means of reducing the system's angular momentum and facilitating coalescence.
Peterson Steffanie
Zavala Robert
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