Results 51 to 60 of about 46,933 (305)

Massive Black Hole Binaries: Dynamical Evolution and Observational Signatures

Advances in Astronomy, 2012
The study of the dynamical evolution of massive black hole pairs in mergers is crucial in the context of a hierarchical galaxy formation scenario. The timescales for the formation and the coalescence of black hole binaries are still poorly constrained ...
M. Dotti, A. Sesana, R. Decarli
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

Formation of Globular Clusters in Galaxy Mergers [PDF]

Highlights of Astronomy, 2005
AbstractOur numerical simulations first demonstrate that the pressure of ISM in a major merger becomes so high (> 105 kB K cm-3) that GMCs in the merger can collapse to form globular clusters (GCs) within a few Myr. The star formation efficiency within a GMC in galaxy mergers can rise up from a few percent to ~ 80 percent, depending on the shapes ...
Kenji Bekki, Warrick J. Couch, Duncan A. Forbes, Michael A. Beasley   +3 more
openaire   +3 more sources

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

Detection Rate of Galaxy Cluster-lensed Stellar Binary Black Hole Mergers by the Third-generation Gravitational-wave Detectors

The Astrophysical Journal
Gravitational waves (GWs) from stellar binary black hole (sBBH) mergers can be strongly gravitational lensed by intervening galaxies/galaxy clusters. Only a few works have investigated cluster-lensed sBBH mergers by adopting oversimplified models, while ...
Zhiwei Chen, Yushan Xie, Youjun Lu, Huanyuan Shan, Nan Li, Yuchao Luo, Xiao Guo   +6 more
doaj   +1 more source

Episodic activities of supermassive black holes at redshift $z\le 2$: driven by mergers?

, 2010
It has been suggested for quite a long time that galaxy mergers trigger activities of supermassive black holes (SMBHs) on the grounds of imaging observations of individual galaxies.
Alexander, Barnes, Bentz, Berti, Chatzichristou, Chen Hu, Corbin, Cox, Dahlen, De Robertis, Erwin, Faber, Ferrarese, Ferrarese, Förster Schreiber, Gebhardt, Genzel, Haehnelt, Haiman, Hopkins, Hopkins, Hopkins, Hopkins, Hopkins, Hopkins, Hughes, Häring, Jahnke, Jian-Min Wang, Kim, King, King, Kinney, Kollmeier, Lacey, Lauer, Lin, Magorrian, Marconi, Marconi, Martini, Martini, Munoz Marin, Netzer, Reichard, Robaina, Ryan, Schmitt, Shemmer, Shen, Shen, Shields, Shields, Shu Zhang, Soltan, Springel, Tacconi ., Tacconi ., Taniguchi, Toomre, Tremaine, Volonteri, Volonteri, Wang, Wang, Wang, Wang, Wyithe, Wyithe, Yan-Rong Li, Ye-Fei Yuan   +70 more
core   +1 more source

THE MERGER-DRIVEN EVOLUTION OF MASSIVE GALAXIES [PDF]

The Astrophysical Journal, 2010
We explore the rate and impact of galaxy mergers on the massive galaxy population using the amplitude of the two-point correlation function on small scales for M > 5e10 M_sun galaxies from the COSMOS and COMBO-17 surveys. Using a pair fraction derived from the Sloan Digital Sky Survey as a low-redshift benchmark, the large survey area at ...
Robaina, Aday R, Bell, Eric F, van der Wel, Arjen, Somerville, Rachel S, Skelton, Rosalind E, McIntosh, D H, Meisenheimer, Klaus, Wolf, Christian   +7 more
openaire   +7 more sources

Genomic Variation Underpins Genetic Divergence and Differing Salt Resilience in Sesbania bispinosa

Advanced Science, EarlyView.
Sesbania, a leguminous halophyte, thrives in saline soils. Comparative genomics reveals key genomic variations—particularly chromosomal inversions—are identified as contributors to population differentiation and salt resilience. These findings advance the understanding of genomic variation driving evolution and phenotypic differentiation and offer ...
Gai Huang, Xiaofei Wang, Chengli Liu, Kaixuan He, Xiu‐Li Hou, Haofei Luo, Shuaibin Zhang, Changqing You, Yajun Jia, Fuqiang Wang, Xianwei Song, Guodao Liu, Xian Deng, Xiaofeng Cao   +13 more
wiley   +1 more source

The Connection between Galaxy Mergers, Star Formation, and Active Galactic Nuclei Activity in the HSC-SSP

The Astrophysical Journal
Internal gas inflows driven by galaxy mergers are considered to enhance star formation rates (SFRs), fuel supermassive black hole growth, and stimulate active galactic nuclei (AGNs).
Kiyoaki Christopher Omori, Connor Bottrell, Sabine Bellstedt, Aaron S. G. Robotham, Hassen M. Yesuf, Andy D. Goulding, Marcin Sawicki, Tohru Nagao, Tsutomu T. Takeuchi   +8 more
doaj   +1 more source

The Origin of the Consistent Planetary Nebula Luminosity Function Bright-end Cutoff

The Astrophysical Journal, 2023
The [O iii ] 5007 Å line is typically the brightest line in planetary nebula (PN) spectra. Observations show that the brightest [O iii ] 5007 Å PN in a galaxy—the planetary nebula luminosity function (PNLF) bright-end cutoff—is surprisingly independent ...
Philippe Z. Yao, Eliot Quataert
doaj   +1 more source