A dust-enshrouded tidal disruption event with a resolved radio jet in a galaxy merger [PDF]
Science, 2018 An expanding radio jet from a destroyed star If a star gets too close to a supermassive black hole, it gets ripped apart in a tidal disruption event (TDE). Mattila et al.
S. Mattila +42 more
semanticscholar +1 more source
Galaxy Merger Fractions in Two Clusters at Using the Hubble Space Telescope [PDF]
Astrophysical Journal, 2019 We measure the fraction of galaxy–galaxy mergers in two clusters at z ∼ 2 using imaging and grism observations from the Hubble Space Telescope. The two galaxy cluster candidates were originally identified as overdensities of objects using deep mid ...
C. Watson +11 more
semanticscholar +1 more source
Two Candidates for Dual AGN in Dwarf-dwarf Galaxy Mergers
The Astrophysical Journal, 2023 Dual active galactic nuclei (DAGN) are important for understanding galaxy-merger-triggered fueling of black holes and the hierarchical growth of structures.
Marko Mićić +3 more
doaj +1 more source
Tidal disruption event rates in galaxy merger remnants [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2019 The rate of tidal disruption events (TDEs) depends sensitively on the stellar properties of the central galactic regions. Simulations show that galaxy mergers cause gas inflows, triggering nuclear starbursts, increasing the central stellar density ...
H. Pfister +4 more
semanticscholar +1 more source
Deep learning predictions of galaxy merger stage and the importance of observational realism [PDF]
Monthly notices of the Royal Astronomical Society, 2019 Machine learning is becoming a popular tool to quantify galaxy morphologies and identify mergers. However, this technique relies on using an appropriate set of training data to be successful.
C. Bottrell +9 more
semanticscholar +1 more source
A Triple AGN in a Mid-infrared Selected Late-stage Galaxy Merger [PDF]
Astrophysical Journal, 2019 The coevolution of galaxies and the supermassive black holes (SMBHs) at their centers via hierarchical galaxy mergers is a key prediction of ΛCDM cosmology.
R. Pfeifle +13 more
semanticscholar +1 more source
ALMA and HST Kiloparsec-scale Imaging of a Quasar-galaxy Merger at Z ≈ 6.2 [PDF]
Astrophysical Journal, 2019 We present kiloparsec-scale Atacama Large Millimeter/submillimeter Array (ALMA) and Hubble Space Telescope imaging of the quasar PJ308–21 at z = 6.2342, tracing dust, gas (via the [C ii] 158 μm line), and young stars. At a resolution of ∼0.″3 (≈1.7 kpc),
R. Decarli +14 more
semanticscholar +1 more source
Spatially Resolved [C ii] Emission in SPT0346-52: A Hyper-starburst Galaxy Merger at z ∼ 5.7 [PDF]
Astrophysical Journal, 2018 SPT0346-52 is one of the most most luminous and intensely star-forming galaxies in the universe, with and . In this paper, we present ALMA observations of the 158 μm emission line in this z = 5.7 dusty star-forming galaxy.
K. Litke +20 more
semanticscholar +1 more source
Automated distant galaxy merger classifications from Space Telescope images using the Illustris simulation [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We present image-based evolution of galaxy mergers from the Illustris cosmological simulation at 12 time-steps over 0.5 < z < 5. To do so, we created approximately one million synthetic deep Hubble Space Telescope and James Webb Space Telescope images ...
G. Snyder +7 more
semanticscholar +1 more source
Identifying Galaxy Mergers in Simulated CEERS NIRCam Images Using Random Forests
The Astrophysical Journal, 2023 Identifying merging galaxies is an important—but difficult—step in galaxy evolution studies. We present random forest (RF) classifications of galaxy mergers from simulated JWST images based on various standard morphological parameters.
Caitlin Rose +25 more
doaj +1 more source