Optical, Near-IR, and Sub-mm IFU Observations of the Nearby Dual Active Galactic Nuclei MRK 463
Privon, George C.
Sartori, Lia F.
Bauer, Franz E.
Comerford, Julia M.
Evans, Aaron S.
Sanders, David B.
Urry, C. Megan
- Journal Article
Rights / licenseCreative Commons Attribution 3.0 Unported
We present optical and near-IR Integral Field Unit (IFU) and ALMA band 6 observations of the nearby dual active galactic nuclei (AGNs) Mrk 463. At a distance of 210 Mpc, and a nuclear separation of ~4 kpc, Mrk 463 is an excellent laboratory to study the gas dynamics, star formation processes and supermassive black hole (SMBH) accretion in a late-stage gas-rich major galaxy merger. The IFU observations reveal a complex morphology, including tidal tails, star-forming clumps, and emission-line regions. The optical data, which map the full extent of the merger, show evidence for a biconical outflow and material outflowing at >600 km s−1, both associated with the Mrk 463E nucleus, along with large-scale gradients likely related to the ongoing galaxy merger. We further find an emission-line region ~11 kpc south of Mrk 463E that is consistent with photoionization by an AGN. Compared to the current AGN luminosity, the energy budget of the cloud implies a luminosity drop in Mrk 463E by a factor of 3–20 over the last 40,000 years. The ALMA observations of 12CO(2–1) and adjacent 1 mm continuum reveal the presence of ~109 M ☉ in molecular gas in the system. The molecular gas shows velocity gradients of ~800 km s−1 and ~400 km s−1 around the Mrk 463E and 463W nuclei, respectively. We conclude that, in this system, the infall of ~100s M ⊙ yr−1 of molecular gas is in rough balance with the removal of ionized gas by a biconical outflow being fueled by a relatively small, <0.01% of accretion onto each SMBH. Show more
Journal / seriesThe Astrophysical Journal
Pages / Article No.
PublisherInstitute of Physics
Subjectgalaxies: active; galaxies: individual (Mrk 463); galaxies: interactions; galaxies: Seyfert
Organisational unit03968 - Schawinski (SNF-Professur) (ehemalig) / Schawinski (SNF-Professur) (former)
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