The Molecular Gas in the NGC 6240 Merging Galaxy System at the Highest Spatial Resolution

Treister, Ezequiel; Messias, H.; Privon, George C.; Nagar, Neil M.; Medling, Anne M.; Vivian, U; Bauer, F. E.; Cicone, C.; Muñoz, Loreto Barcos; Evans, A. S.; Müller–Sánchez, F.; Comerford, Julia M.; Armus, L.; Chang, Chin-Shin; Koss, Michael; Venturi, G.; Schawinski, Kevin; Casey, Caitlin M.; Urry, C. Megan; Sanders, D. B.; Scoville, N. Z.; Sheth, Kartik

doi:10.3847/1538-4357/ab6b28

Cited by 34 publications

(40 citation statements)

References 87 publications

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“…Recently, Kollatschny et al (2019), using VLT/MUSE data at a resolution of 75 milliarcsec, have reported the discovery of a third nucleus in this galaxy: the Southern component appears to host two distinct nuclei, separated by 198 pc only. The lack of a radio counterpart for the newly detected nucleus suggests that it could be not active; furthermore, no 12 CO(2-1) emission at its position is detected by ALMA (Treister et al, 2020), in stark contrast with the two previously known nuclei.…”

Section: Discovery and Follow-up Observations Of Dual Agnmentioning

confidence: 56%

The quest for dual and binary supermassive black holes: A multi-messenger view

Rosa

Vignali

Bogdanović

et al. 2019

New Astronomy Reviews

201

123

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The quest for binary and dual supermassive black holes (SMBHs) at the dawn of the multi-messenger era is compelling. Detecting dual active galactic nuclei (AGN)-active SMBHs at projected separations larger than several parsecs-and binary AGN-probing the scale where SMBHs are bound in a Keplerian binary-is an observational challenge. The study of AGN pairs (either dual or binary) also represents an overarching theoretical problem in cosmology and astrophysics. The AGN triggering calls for detailed knowledge of the hydrodynamical conditions of gas in the imminent surroundings of the SMBHs and, at the same time, their duality calls for detailed knowledge on how galaxies assemble through major and minor mergers and grow fed by matter along the filaments of the cosmic web. This review describes the techniques used across the electromagnetic spectrum to detect dual and binary AGN candidates and proposes new avenues for their search. The current observational status is compared with the state-of-the-art numerical simulations and models for formation of dual and binary AGN. Binary SMBHs are among the loudest sources of gravitational waves (GWs) in the Universe. The search for a background of GWs at nHz frequencies from inspiralling SMBHs at low redshifts, and the direct detection of signals from their coalescence by the Laser Interferometer Space Antenna in the next decade, make this a theme of major interest for multi-messenger astrophysics. This review discusses the future facilities and observational strategies that are likely to significantly advance this fascinating field.

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Section: Discovery and Follow-up Observations Of Dual Agnmentioning

confidence: 56%

The quest for dual and binary supermassive black holes: A multi-messenger view

Rosa

Vignali

Bogdanović

et al. 2019

New Astronomy Reviews

201

123

View full text Add to dashboard Cite

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“…Some of these observations are very detailed and reveal very clumpy structures (e.g. Pereira-Santaella et al 2016Cicone et al 2019) and complex morphologies on different scales, often difficult to describe with simple models (Combes et al 2014;Tsai et al 2012;Sakamoto et al 2014;García-Burillo et al 2014Gallimore et al 2016;Aalto et al 2016;Pereira-Santaella et al 2016;Falstad et al 2017;Pereira-Santaella et al 2018;Herrera-Camus et al 2019a;Treister et al 2020). However, the bulk of these observations are often still limited to the detection of high-velocity wings of the CO transitions, and only marginally resolved.…”

Section: Molecular Gas Componentmentioning

confidence: 99%

Cool outflows in galaxies and their implications

Veilleux

Maiolino

Bolatto

et al. 2020

Astron Astrophys Rev

419

310

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Neutral-atomic and molecular outflows are a common occurrence in galaxies, near and far. They operate over the full extent of their galaxy hosts, from the innermost regions of galactic nuclei to the outermost reaches of galaxy halos. They carry a substantial amount of material that would otherwise have been used to form new stars. These cool outflows may have a profound impact on the evolution of their host galaxies and environments. This article provides an overview of the basic physics of cool outflows, a comprehensive assessment of the observational techniques and diagnostic tools used to characterize them, a detailed description of the best-studied cases, and a more general discussion of the statistical properties of these outflows in the local and distant universe. The remaining outstanding issues that have not yet been resolved are summarized at the end of the review to inspire new research directions.

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“…However, this is unlikely; Figure 5(a) shows that the gas motions appear to be dominated by rotation, as we quantify in Section 4.4. A merger, on the other hand, would likely show dispersion-dominant gas dynamics (e.g., Bournaud et al 2011;Díaz-Santos et al 2016Treister et al 2020). ).…”

Section: Symmetric Line Profile Even If There Is a Close [C Ii]mentioning

confidence: 99%

Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XIII. Large-scale Feedback and Star Formation in a Low-luminosity Quasar at z = 7.07 on the Local Black Hole to Host Mass Relation

Izumi

Matsuoka

Fujimoto³

et al. 2021

ApJ

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We present Atacama Large Millimeter/submillimeter Array [C II] 158 μm line and underlying far-infrared (FIR) continuum emission observations (0 70 × 0 56 resolution) toward HSC J124353.93+010038.5 (J1243+0100) at z = 7.07, the only low-luminosity (M 1450 > −25 mag) quasar currently known at z > 7. The FIR continuum is bright (1.52 mJy) and resolved with a total luminosity of L FIR = 3.5 × 10 12 L e . The spatially extended component is responsible for ∼40% of the emission. The area-integrated [C II] spectrum shows a broad wing (FWHM = 997 km s −1 , L [C II] = 1.2 × 10 9 L e ), as well as a bright core (FWHM = 235 km s −1 , L [C II] = 1.9 × 10 9 L e ). This wing is the first detection of a galactic-scale quasar-driven outflow (atomic outflow rate >447 M e yr −1 ) at z > 7. The estimated large mass-loading factor of the total outflow (e.g., 9 relative to the [C II]-based star formation rate) suggests that this outflow will soon quench the star formation of the host. The core gas dynamics are governed by rotation, with a rotation curve suggestive of a compact bulge (∼3.3 × 10 10 M e ), although it is not yet spatially resolved. Finally, we found that J1243+0100 has a black hole mass-to-dynamical mass (and -to-bulge mass) ratio of ∼0.4% (∼1%), consistent with the local value within the uncertainties. Our results therefore suggest that the black hole-host coevolution relation is already in place at z ∼ 7 for this object.Unified Astronomy Thesaurus concepts: Quasars (1319); AGN host galaxies (2017); Active galaxies (17); Interstellar medium (847); Submillimeter astronomy (1647); High-redshift galaxies (734); Galaxy evolution (594)

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The Molecular Gas in the NGC 6240 Merging Galaxy System at the Highest Spatial Resolution

Cited by 34 publications

References 87 publications

The quest for dual and binary supermassive black holes: A multi-messenger view

The quest for dual and binary supermassive black holes: A multi-messenger view

Cool outflows in galaxies and their implications

Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XIII. Large-scale Feedback and Star Formation in a Low-luminosity Quasar at z = 7.07 on the Local Black Hole to Host Mass Relation

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