Results 51 to 60 of about 46,640 (252)

A Census of WISE-selected Dual and Offset AGNs Across the Sky: New Constraints on Merger-driven Triggering of Obscured AGNs

The Astrophysical Journal, 2023
Pairs of galaxies hosting active galactic nuclei (AGNs) are powerful probes of merger-driven supermassive black hole (SMBH) growth as they can resolve individual AGNs and trace mergers over a large range of physical separations.
R. Scott Barrows, Julia M. Comerford, Daniel Stern, Roberto J. Assef   +3 more
doaj   +1 more source

Merger-Induced Metallicity Dilution in Cosmological Galaxy Formation Simulations

, 2018
Observational studies have revealed that galaxy pairs tend to have lower gas-phase metallicity than isolated galaxies. This metallicity deficiency can be caused by inflows of low-metallicity gas due to the tidal forces and gravitational torques ...
Bustamante, Sebastian, Grand, Robert J. J., Sparre, Martin, Springel, Volker   +3 more
core   +1 more source

Multi‐Dielectric Metasurfaces for Ultrabright, Tunable Structural Color and Reconfigurable Optical Filtering with Extraordinarily Large Color Span

Advanced Optical Materials, EarlyView.
Structural color generation is an emerging field for digital display and printing applications. This report presents a novel truncated‐cone design and the first use of GaP sandwiched between two layers of TiO2, demonstrating ultra‐bright, tunable colors with a record color gamut.
Md Rumon Miah, Yavuz Selim Aydın, Hilmi Volkan Demir   +2 more
wiley   +1 more source

MAGICS I. The First Few Orbits Encode the Fate of Seed Massive Black Hole Pairs

The Open Journal of Astrophysics
The elusive massive black hole (MBH) seeds stand to be revealed by the Laser Space Antenna Interferometer through mergers. As an aftermath of galaxy mergers, MBH coalescence is a vastly multi-scale process connected to galaxy formation. We introduce the "
Nianyi Chen, Diptajyoti Mukherjee, Tiziana Di Matteo, Yueying Ni, Simeon Bird, Rupert Croft   +5 more
doaj   +1 more source

A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: I. Galaxy Mergers & Quasar Activity

, 2007
(Abridged) We develop a model for the cosmological role of mergers in the evolution of starbursts, quasars, and spheroidal galaxies. Combining halo mass functions (MFs) with empirical halo occupation models, we calculate where major galaxy-galaxy mergers
Athanassoula E., Bower R. G., Combes F., da Angela J., Dušan Kereš, Gao L., Kormendy J., Krivitsky D. S., Lars Hernquist, Li C., Lynden-Bell D., Mo H. J., Pfenniger D., Philip F. Hopkins, Richstone D., Salviander S., Saunders W., Shakura N. I., Soltan A., Thomas J. Cox, Weinmann S. M., White S. D. M.   +21 more
core   +1 more source

A Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

Advanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino, Phuoc Thien Phan, James Davies, Bibhu Sharma, Tianruo Guo, Chi Cong Nguyen, Nigel H. Lovell, Thanh Nho Do   +7 more
wiley   +1 more source

On the Frequency of Multiple Galaxy Mergers in ΛCDM Cosmological Simulations

The Astrophysical Journal
Mergers are believed to play a pivotal role in galaxy evolution, and measuring the galaxy merger fraction is a longstanding goal of both observational and theoretical studies.
Jonathan Mack, Shy Genel
doaj   +1 more source

A definitive merger-AGN connection at z~0 with CFIS: mergers have an excess of AGN and AGN hosts are more frequently disturbed

, 2019
The question of whether galaxy mergers are linked to the triggering of active galactic nuclei (AGN) continues to be a topic of considerable debate. The issue can be broken down into two distinct questions: 1) Can galaxy mergers trigger AGN? 2) Are galaxy
Bottrell, Connor, Cuillandre, Jean-Charles, Ellison, Sara L., Gwyn, Stephen, McConnachie, Alan W., Patton, David R., Viswanathan, Akshara   +6 more
core   +3 more sources

Merger relics of cluster galaxies [PDF]

, 2013
Context. Sheen and collaborators recently found that a surprisingly large portion (38%) of massive early-type galaxies in heavy clusters show strong merger-related disturbed features.
Ji, Inchan, Jung, Intae, Lee, Jaehyun, Sheen, Yun-Kyeong, Yi, Sukyoung K.   +4 more
core   +1 more source

Mergers and galaxy evolution [PDF]

, 2007
Galaxy merging is the late time manifestation of the galaxy formation process and likely significantly effects z < 1 galaxies. A "maximum reasonable rate" model for merging finds a ,~ 2 mag K band increase in the luminosities of dwarf galaxies so that they contribute significantly to the faint counts, with spirals and ellipticals being far less ...
openaire   +1 more source