Search Results - "Shen, Juntai"

Importance of Initial Condition on Bar Secular Evolution: Role of Halo Angular Momentum Distribution Discontinuity by Kataria, Sandeep Kumar, Shen, Juntai

“…Abstract The dark matter halo properties, for example, mass, spin, and concentration, play a significant role in the formation and evolution of bars in disk…”
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Dissecting the Phase Space Snail Shell by Li, Zhao-Yu, Shen, Juntai

“…The ongoing vertical phase-mixing, manifesting itself as a snail shell in the phase space, has been discovered with Gaia DR2 data. To better understand the…”
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The Supermassive Black Hole and Dark Matter Halo of NGC 4649 (M60) by Shen, Juntai, Gebhardt, Karl

“…We apply the axisymmetric orbit superposition modeling to estimate the mass of the supermassive black hole (BH) and dark matter (DM) halo profile of NGC 4649…”
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GAS DYNAMICS IN THE MILKY WAY: A LOW PATTERN SPEED MODEL by Li, Zhi, Gerhard, Ortwin, Shen, Juntai, Portail, Matthieu, Wegg, Christopher

“…ABSTRACT We present gas flow models for the Milky Way based on high-resolution grid-based hydrodynamical simulations. The basic galactic potential we use is…”
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Gas Dynamics in the Galaxy: Total Mass Distribution and the Bar Pattern Speed by Li, Zhi, Shen, Juntai, Gerhard, Ortwin, Clarke, Jonathan P.

“…Abstract Gas morphology and kinematics in the Milky Way contain key information for understanding the formation and evolution of our Galaxy. We present…”
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Measuring the Milky Way Vertical Potential with the Phase Snail in a Model-independent Way by Guo, Rui, Li, Zhao-Yu, Shen, Juntai, Mao, Shude, Liu, Chao

“…Abstract The vertical phase-space spiral (snail) is a direct sign of disequilibrium of the Milky Way’s disk. Nevertheless, the wrapping of the phase snail…”
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A UNIFIED FRAMEWORK FOR THE ORBITAL STRUCTURE OF BARS AND TRIAXIAL ELLIPSOIDS by Valluri, Monica, Shen, Juntai, Abbott, Caleb, Debattista, Victor P.

“…ABSTRACT We examine a large random sample of orbits in two self-consistent simulations of N-body bars. Orbits in these bars are classified both visually and…”
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Deciphering the Kinematic Substructure of Local Dark Matter with LAMOST K Giants by Zhu, Hai, Guo, Rui, Shen, Juntai, Liu, Jianglai, Liu, Chao, Xue, Xiang-Xiang, Zhang, Lan, Mao, Shude

“…Abstract Numerical simulations indicate that correlations exist between the velocity distributions of stars and dark matter (DM). We study the local DM…”
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Insights into the Galactic Bulge Chemodynamical Properties from Gaia Data Release 3 by Liao, Xiaojie, Li, Zhao-Yu, Simion, Iulia, Shen, Juntai, Grand, Robert, Fragkoudi, Francesca, Marinacci, Federico

“…Abstract We explore the chemodynamical properties of the Galaxy in the azimuthal velocity V ϕ and metallicity [Fe/H] space using red giant stars from Gaia Data…”
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Orbital Support and Evolution of CX/OX Structures in Boxy/Peanut Bars by Tahmasebzadeh, Behzad, Dattathri, Shashank, Valluri, Monica, Shen, Juntai, Zhu, Ling, Wheeler, Vance, Gerhard, Ortwin, Kataria, Sandeep Kumar, Beraldo e Silva, Leandro, Daniel, Kathryne J.

“…Abstract Barred galaxies exhibit boxy/peanut or X-shapes (BP/X) protruding from their disks in edge-on views. Two types of BP/X morphologies exist depending on…”
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Bar-driven Gas Dynamics of M31 by Feng, Zi-Xuan, Li, Zhi, Shen, Juntai, Gerhard, Ortwin, Saglia, R. P., Blaña, Matias, Li, Hui, Jing, Yingjie

“…Abstract The large-scale gaseous shocks in the bulge of M31 can be naturally explained by a rotating stellar bar. We use gas dynamical models to provide an…”
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How Nested Bars Enhance, Modulate, and Are Destroyed by Gas Inflows by Li, Zhi, Du, Min, Debattista, Victor P., Shen, Juntai, Li, Hui, Liu, Jie, Vogelsberger, Mark, Beane, Angus, Marinacci, Federico, Sales, Laura V.

“…Abstract Gas flows in the presence of two independently rotating nested bars remain not fully understood but are likely to play an important role in fueling…”
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Galactic warps induced by cosmic infall by Shen, Juntai, Sellwood, J. A.

“…Recent ideas for the origin and persistence of the warps commonly observed in disc galaxies have focused on cosmic infall. We present N-body simulations of an…”
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The Destruction of Bars by Central Mass Concentrations by Shen, Juntai, Sellwood, J. A

“…More than two-thirds of disk galaxies are barred to some degree. Many today harbor massive concentrations of gas in their centers, and some are known to…”
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Observable Properties of Double-Barred Galaxies in N-Body Simulations by Shen, Juntai, Debattista, Victor P

“…Although at least one quarter of early-type barred galaxies host secondary stellar bars embedded in their large-scale primary counterparts, the dynamics of…”
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Testing the Prediction of Fuzzy Dark Matter Theory in the Milky Way Center by Li, Zhi, Shen, Juntai, Schive, Hsi-Yu

“…The fuzzy dark matter model (FDM; also known as quantum wave dark matter model) argues that light bosons with a mass of are a possible candidate for dark…”
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Tests of the Radial Tremaine-Weinberg Method by Meidt, Sharon E, Rand, Richard J, Merrifield, Michael R, Debattista, Victor P, Shen, Juntai

“…At the intersection of galactic dynamics, evolution, and global structure, issues such as the relation between bars and spirals and the persistence of spiral…”
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Long-lived Double-barred Galaxies from Pseudobulges by Debattista, Victor P, Shen, Juntai

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Effects of Inner Halo Angular Momentum on the Peanut/X Shapes of Bars by Kataria, Sandeep Kumar, Shen, Juntai

“…Abstract Cosmological simulations show that dark matter halos surrounding baryonic disks have a wide range of angular momenta, which is measured by the spin…”
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The global stability of M33: still a puzzle by Sellwood, J A, Shen, Juntai, Li, Zhi

“…Abstract The inner disc of the Local Group galaxy M33 appears to be in settled rotational balance, and near-IR images reveal a mild, large-scale, two-arm…”
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