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The SAMI Galaxy Survey: Kinematics of stars and gas in brightest group galaxies; the role of group dynamics
Mojtaba Raouf, Rory Smith, Habib G. Khosroshahi +17
We study the stellar and gas kinematics of the brightest group galaxies (BGGs) in dynamically relaxed and unrelaxed galaxy groups for a sample of 154 galaxies in the SAMI galaxy su…
The Sami Galaxy Survey: stellar populations of passive spiral galaxies in different environment
Mina Pak, Sree Oh, Joon Hyeop Lee +17
We investigate the stellar populations of passive spiral galaxies as a function of mass and environment, using integral field spectroscopy data from the Sydney-AAO Multi-object Int…
GASP XXIX -- Unwinding the arms of spiral galaxies via ram-pressure stripping
Callum Bellhouse, Sean L. McGee, Rory Smith +11
We present the first study of the effect of ram-pressure "unwinding" the spiral arms of cluster galaxies. We study 11 ram-pressure stripped galaxies from GASP (GAs Stripping Phenom…
Improved analysis of GW190412 with a precessing numerical relativity surrogate waveform model
Tousif Islam, Scott E. Field, Carl-Johan Haster +1
The recent observation of GW190412, the first high-mass ratio binary black-hole (BBH) merger, by the LIGO-Virgo Collaboration (LVC) provides a unique opportunity to probe the impac…
GW190521 as a merger of Proca stars: a potential new vector boson of eV
Juan Calderón Bustillo, Nicolas Sanchis-Gual, Alejandro Torres-Forné +6
Advanced LIGO-Virgo reported a short gravitational-wave signal (GW190521) interpreted as a quasi-circular merger of black holes, one populating the pair-instability supernova gap,…
Measuring the primordial gravitational-wave background in the presence of astrophysical foregrounds
Sylvia Biscoveanu, Colm Talbot, Eric Thrane +1
Primordial gravitational waves are expected to create a stochastic background encoding information about the early Universe that may not be accessible by other means. However, the…
Beyond halo mass: quenching galaxy mass assembly at the edge of filaments
Hyunmi Song, Clotilde Laigle, Ho Seong Hwang +6
We examine how the mass assembly of central galaxies depends on their location in the cosmic web. The HORIZON-AGN simulation is analysed at z~2 using the DISPERSE code to extract m…
A scalable random forest regressor for combining neutron-star equation of state measurements: A case study with GW170817 and GW190425
Francisco Hernandez Vivanco, Rory Smith, Eric Thrane +1
Gravitational-wave observations of binary neutron star coalescences constrain the neutron-star equation of state by enabling measurement of the tidal deformation of each neutron st…
The Blue Compact Dwarf Galaxy VCC 848 Formed by Dwarf-Dwarf Merging: HI Gas, Star Formation and Numerical Simulations
Hong-Xin Zhang, Rory Smith, Se-Heon Oh +12
A clear link between a dwarf-dwarf merger event and enhanced star formation (SF) in the recent past was recently identified in the gas-dominated merger remnant VCC 848, offering by…
Revealing the formation mechanism of the shell galaxy NGC474 with MUSE
Jeremy Fensch, Pierre-Alain Duc, Sungsoon Lim +6
Stellar shells around galaxies could provide precious insights into their assembly history. However, their formation mechanism remains poorly empirically constrained, in particular…
Toward Solving the Puzzle: Dissecting the Complex Merger A521 with Multi-wavelength Data
Mijin Yoon, Wonki Lee, M. James Jee +3
A521 has been a subject of extensive panchromatic studies from X-ray to radio. The cluster possesses a number of remarkable features including a bright radio relic with a steep spe…
Inferring the population properties of binary black holes from unresolved gravitational waves
Rory Smith, Colm Talbot, Francisco Hernandez Vivanco +1
The vast majority of compact binary mergers in the Universe produce gravitational waves that are too weak to yield unambiguous detections; they are unresolved. We present a method…
The Blue Compact Dwarf Galaxy VCC848 Formed by Dwarf-Dwarf Merging
Hong-Xin Zhang, Sanjaya Paudel, Rory Smith +8
It has long been speculated that many starburst or compact dwarf galaxies are resulted from dwarf-dwarf galaxy merging, but unequivocal evidence for this possibility has rarely bee…
YZiCS: Unveiling Quenching History of Cluster Galaxies Using Phase-space Analysis
Jinsu Rhee, Rory Smith, Hoseung Choi +4
We used the time since infall (TSI) of galaxies, obtained from the Yonsei Zoom-in Cluster Simulation, and the star formation rate (SFR) from the Sloan Digital Sky Survey (SDSS) Dat…
An analysis and visualization of the output mode-matching requirements for squeezing in Advanced LIGO and future gravitational wave detectors
Antonio Perreca, Aidan Brooks, Jonathan Richardson +2
The sensitivity of ground-based gravitational wave (GW) detectors will be improved in the future via the injection of frequency-dependent squeezed vacuum. The achievable improvemen…