Search Results - "Weinberg, Martin D."

A Comprehensive Perturbative Formalism for Phase Mixing in Perturbed Disks. II. Phase Spirals in an Inhomogeneous Disk Galaxy with a Nonresponsive Dark Matter Halo by Banik, Uddipan, van den Bosch, Frank C., Weinberg, Martin D.

“…We develop a linear perturbative formalism to compute the response of an inhomogeneous stellar disk embedded in a nonresponsive dark matter (DM) halo to…”
Get full text

Computing the Bayes Factor from a Markov Chain Monte Carlo Simulation of the Posterior Distribution by Weinberg, Martin D.

Get full text

A Two Micron All Sky Survey View of the Sagittarius Dwarf Galaxy. I. Morphology of the Sagittarius Core and Tidal Arms by Majewski, Steven R, Skrutskie, M. F, Weinberg, Martin D, Ostheimer, James C

Get full text

Bayesian inferences of galaxy formation from the K-band luminosity and H i mass functions of galaxies: constraining star formation and feedback by Lu, Yu, Mo, H. J., Lu, Zhankui, Katz, Neal, Weinberg, Martin D.

“…We infer mechanisms of galaxy formation for a broad family of semi-analytic models (SAMs) constrained by the K-band luminosity function and H i mass function…”
Get full text

New dipole instabilities in spherical stellar systems by Weinberg, Martin D

“…ABSTRACT Spherical stellar systems have weakly damped response modes. The dipole modes are seiche modes. The quadrupole are zero pattern-speed prolate modes,…”
Get full text

Stellar Populations in the Large Magellanic Cloud from 2MASS by Nikolaev, Sergei, Weinberg, Martin D

Get full text

Generation of mock tidal streams by Fardal, Mark A., Huang, Shuiyao, Weinberg, Martin D.

“…In this paper, we discuss a method for the generation of mock tidal streams. Using an ensemble of simulations in an isochrone potential where the actions and…”
Get full text

exp: N-body integration using basis function expansions by Petersen, Michael S, Weinberg, Martin D, Katz, Neal

“…ABSTRACT We present the N-body simulation techniques implemented in the exp code. exp uses empirically chosen basis functions to expand the potential field of…”
Get full text

Using commensurabilities and orbit structure to understand barred galaxy evolution by Petersen, Michael S, Weinberg, Martin D, Katz, Neal

“…ABSTRACT We interpret simulations of secularly evolving disc galaxies through orbit morphology. Using a new algorithm that measures the volume of orbits in…”
Get full text

Using torque to understand barred galaxy models by Petersen, Michael S, Weinberg, Martin D, Katz, Neal

“…We track the angular momentum transfer in N-body simulations of barred galaxies by measuring torques to understand the dynamical mechanisms responsible for the…”
Get full text

Structure of the Large Magellanic Cloud from 2MASS by Weinberg, Martin D, Nikolaev, Sergei

Get full text

A Comprehensive Perturbative Formalism for Phase Mixing in Perturbed Disks. I. Phase Spirals in an Infinite, Isothermal Slab by Banik, Uddipan, Weinberg, Martin D., van den Bosch, Frank C.

“…Galactic disks are highly responsive systems that often undergo external perturbations and subsequent collisionless equilibration, predominantly via phase…”
Get full text

Measuring the dynamical length of galactic bars by Petersen, Michael S, Weinberg, Martin D, Katz, Neal

“…We define a physically motivated measure for galactic bar length, called the dynamical length. The dynamical length of the bar corresponds to the radial extent…”
Get full text

Dark matter trapping by stellar bars: the shadow bar by Petersen, Michael S, Weinberg, Martin D, Katz, Neal

“…We investigate the complex interactions between the stellar disc and the dark-matter halo during bar formation and evolution using N-body simulations with fine…”
Get full text

Using multichannel singular spectrum analysis to study galaxy dynamics by Weinberg, Martin D, Petersen, Michael S

“…ABSTRACT N-body simulations provide most of our insight into the structure and evolution of galaxies, but our analyses of these are often heuristic and from…”
Get full text

Dynamically constraining the length of the Milky way bar by Lucey, Madeline, Pearson, Sarah, Hunt, Jason A S, Hawkins, Keith, Ness, Melissa, Petersen, Michael S, Price-Whelan, Adrian M, Weinberg, Martin D

“…ABSTRACT We present a novel method for constraining the length of the Galactic bar using 6D phase-space information to directly integrate orbits. We define a…”
Get full text

Direct Simulation Monte Carlo for astrophysical flows - II. Ram-pressure dynamics by Weinberg, Martin D.

“…We use the Direct Simulation Monte Carlo method combined with an N-body code to study the dynamics of the interaction between a gas-rich spiral galaxy and…”
Get full text

An Upper Limit to the Age of the Galactic Bar by Cole, Andrew A, Weinberg, Martin D

Get full text

Dynamical data mining captures disc–halo couplings that structure galaxies by Johnson, Alexander C, Petersen, Michael S, Johnston, Kathryn V, Weinberg, Martin D

“…ABSTRACT Studying coupling between different galactic components is a challenging problem in galactic dynamics. Using basis function expansions (BFEs) and…”
Get full text

The Galaxy Angular Correlation Functions and Power Spectrum from the Two Micron All Sky Survey by Maller, Ariyeh H, McIntosh, Daniel H, Katz, Neal, Weinberg, Martin D

“…We calculate the angular correlation function of galaxies in the Two Micron All Sky Survey. We minimize the possible contamination by stars, dust, seeing, and…”
Get full text