Kavli Affiliate: Roger W. Romani
| First 5 Authors: Tirth Surti, Roger W. Romani, Julia Scharwächter, Alison Peck, Greg B. Taylor
| Summary:
We report on IFU measurements of the host of the radio source 4C+37.11. This
massive elliptical contains the only resolved double compact nucleus at
pc-scale separation, likely a bound supermassive black hole binary (SMBHB).
$i$-band photometry and GMOS-N IFU spectroscopy show that the galaxy has a
large $r_b=1.5^{primeprime}$ core and that the stellar velocity dispersion
increases inside of a radius of influence $r_{rm SOI} approx
1.3^{primeprime}$. Jeans Anisotropic Modeling analysis of the core infers a
total SMBHB mass of $2.8^{+0.8}_{-0.8} times 10^{10}M_odot$, making this one
of the most massive black hole systems known. Our data indicate that there has
been significant scouring of the central kpc of the host galaxy.
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