Search Results - "Wu, Xufen"

Energy Evolution in the Progenitor of Galaxy Shells: A Semi-analytical Model by Guo, Beibei, Wu, Xufen, Zhao, HongSheng, Fan, Lulu

“…Abstract The stellar shells surrounding an elliptical galaxy, as remnants of a dwarf galaxy disrupted during merging, reveal the distribution of energy and…”
Get full text

Shape Asymmetries and the Relation between Lopsidedness and Radial Alignment in Simulated Galaxies by Shen, Jinzhi, Wu, Xufen, Zheng, Yirui, Guo, Beibei

“…Abstract Galaxies are observed to be lopsided, meaning that they are more massive and more extended along one side than the opposite side. In this work, we…”
Get full text

The mass and angular momentum distribution of simulated massive early-type galaxies to large radii by Wu, Xufen, Gerhard, Ortwin, Naab, Thorsten, Oser, Ludwig, Martinez-Valpuesta, Inma, Hilz, Michael, Churazov, Eugene, Lyskova, Natalya

“…We study the dark and luminous mass distributions, circular velocity curves (CVCs), line-of-sight kinematics and angular momenta for a sample of 42…”
Get full text

Milky Way potentials in cold dark matter and MOdified Newtonian Dynamics. Is the Large Magellanic Cloud on a bound orbit? by Wu, Xufen, Famaey, Benoit, Gentile, Gianfranco, Perets, Hagai, Zhao, HongSheng

“…We compute the Milky Way potential in different cold dark matter (CDM) based models, and compare these with the MOdified Newtonian Dynamics (MOND) framework…”
Get full text

A common Milgromian acceleration scale in nature by Kroupa, Pavel, Banik, Indranil, Haghi, Hosein, Zonoozi, Akram Hasani, Dabringhausen, Jörg, Javanmardi, Behnam, Müller, Oliver, Wu, Xufen, Zhao, Hongsheng

Get full text

On the Separation Between Baryonic and Dark Matter: Evidence for Phantom Dark Matter? by Knebe, Alexander, Llinares, Claudio, Wu, Xufen, Zhao, HongSheng

“…The recent years have seen combined measurements of X-ray and (weak) lensing contours for colliding galaxy clusters such as, for instance, the famous 'Bullet'…”
Get full text

The Galactic Potential and the Asymmetric Distribution of Hypervelocity Stars by Perets, Hagai B, Wu, Xufen, Zhao, HongSheng, Famaey, Benoit, Gentile, Gianfranco, Alexander, Tal

“…In recent years several hypervelocity stars (HVSs) have been observed in the halo of our Galaxy. Such HVSs have possibly been ejected from the Galactic center…”
Get full text

N-body simulations for testing the stability of triaxial galaxies in MOND by Wu, Xufen, Zhao, HongSheng, Wang, Yougang, Llinares, Claudio, Knebe, Alexander

“…We perform a stability test of triaxial models in Modified Newtonian Dynamics (MOND) using N-body simulations. The triaxial models considered here have…”
Get full text

Galactic rotation curves, the baryon-to-dark-halo-mass relation and space–time scale invariance by Wu, Xufen, Kroupa, Pavel

“…Low-acceleration space-time scale invariant dynamics (SID) predicts two fundamental correlations known from observational galactic dynamics: the baryonic…”
Get full text

Loss of Mass and Stability of Galaxies in Modified Newtonian Dynamics by Wu, Xufen, Zhao, HongSheng, Famaey, Benoit, Gentile, G, Tiret, O, Combes, F, Angus, G. W, Robin, A. C

“…The self-binding energy and stability of a galaxy in MOND-based gravity are curiously decreasing functions of its center-of-mass acceleration (of the order of…”
Get full text

Formation of collisional ring galaxies in Milgromian dynamics by Ma, Li, Wu, Xufen

“…ABSTRACT Ring galaxies are rare in the Universe. A head-on or off-centre collision between an intruder galaxy and a disc galaxy leads to a collisional ring…”
Get full text

Self-consistent Models of Triaxial Galaxies in MOND Gravity by Wang, You-gang, Wu, Xufen, Zhao, HongSheng

“…The Bekenstein-Milgrom gravity theory with a modified Poisson equation is tested here for the existence of triaxial equilibrium solutions. Using the…”
Get full text

The kinematics of star clusters undergoing gas expulsion in Newtonian and Milgromian dynamics by Wu, Xufen, Kroupa, Pavel

Get full text

Gas Expulsion in MOND: The Possible Origin of Diffuse Globular Clusters and Ultra-faint Dwarf Galaxies by Wu, Xufen, Kroupa, Pavel

“…We study the evolution of star clusters located in the outer regions of a galaxy undergoing a sudden mass loss through gas expulsion in the framework of…”
Get full text

Collisions of Young Disk Galaxies in the Early Universe by Guo, Beibei, Wu, Xufen, Chen, Guangwen

“…Abstract In the local universe, disk galaxies are generally well evolved and Toomre stable. Their collisions with satellite galaxies naturally produce ring…”
Get full text

The specific frequency and the globular cluster formation efficiency in Milgromian dynamics by Wu, Xufen, Kroupa, Pavel

“…Previous studies of globular cluster (GC) systems show that there appears to be a universal specific GC formation efficiency η which relates the total mass of…”
Get full text

A new formulation of the external field effect in MOND and numerical simulations of ultra-diffuse dwarf galaxies – application to NGC 1052-DF2 and NGC 1052-DF4 by Haghi, Hosein, Kroupa, Pavel, Banik, Indranil, Wu, Xufen, Zonoozi, Akram Hasani, Javanmardi, Behnam, Ghari, Amir, Müller, Oliver, Dabringhausen, Jörg, Zhao, Hongsheng

“…The ultra-diffuse dwarf galaxy NGC 1052-DF2 (DF2) has 10 (11) measured globular clusters (GCs) with a line-of-sight velocity dispersion of |$\sigma…”
Get full text

Does the galaxy NGC1052–DF2 falsify Milgromian dynamics? by Kroupa, Pavel, Haghi, Hosein, Javanmardi, Behnam, Zonoozi, Akram Hasani, Müller, Oliver, Banik, Indranil, Wu, Xufen, Zhao, Hongsheng, Dabringhausen, Jörg

Get full text

The dynamical phase transitions of stellar systems and the corresponding kinematics by Wu, Xufen, Kroupa, P.

“…External fields in Milgromian dynamics (MD or MOND) break the Strong Equivalence Principle (SEP) and change the dynamics of self-bound stellar systems moving…”
Get full text

Lopsidedness of Self-consistent Galaxies Caused by the External Field Effect of Clusters by Wu, Xufen, Wang, Yougang, Feix, Martin, Zhao, HongSheng

“…Adopting Schwarzschild's orbit-superposition technique, we construct a series of self-consistent galaxy models, embedded in the external field of galaxy…”
Get full text