Results 31 to 40 of about 351,522 (101)

Accuracy Diagrams for the Galactic Rotation Curve and Kinematical Distances [PDF]

open access: yes, 2011
We revisit the methods to determine the Galactic rotation curve and kinematical distances from radial velocities and proper motions. We construct "accuracy diagrams" to show the distributions in the galactic plane of expected uncertainties in the derived quantities such as rotation velocities and kinematical distances.
arxiv   +1 more source

Color-Kinematics Duality in Multi-Regge Kinematics and Dimensional Reduction

open access: yes, 2013
In this note we study the applicability of the color-kinematics duality to the scattering of two distinguishable scalar matter particles with gluon emission in QCD, or graviton emission in Einstein gravity.
Campillo, Eduardo Serna   +3 more
core   +1 more source

Cluster algebras in scattering amplitudes with special 2D kinematics [PDF]

open access: yes, 2014
We study the cluster algebra of the kinematic configuration space $Conf_n(\mathbb{P}^3)$ of a n-particle scattering amplitude restricted to the special 2D kinematics.
M Gekhtman, Marcus A. C. Torres
core   +2 more sources

Rigid chain in parallel kinematic positioning system [PDF]

open access: yesarXiv, 2020
The article presents an analysis of the trends in the development of kinematic structures of modern machine-building technological equipment. The prospects of using machines with parallel kinematics in processing, measuring and handling equipment, their advantages and disadvantages are demonstrated.
arxiv  

Kinematic Distances: A Monte Carlo Method [PDF]

open access: yes, 2018
Distances to high mass star forming regions (HMSFRs) in the Milky Way are a crucial constraint on the structure of the Galaxy. Only kinematic distances are available for a majority of the HMSFRs in the Milky Way. Here we compare the kinematic and parallax distances of 75 Galactic HMSFRs to assess the accuracy of kinematic distances.
arxiv   +1 more source

Galactic outflows and the kinematics of damped Lyman alpha absorbers [PDF]

open access: yes, 2010
The kinematics of damped Lyman alpha absorbers (DLAs) are difficult to reproduce in hierarchical galaxy formation models, particularly the preponderance of wide systems.
Davé, Romeel   +5 more
core   +2 more sources

Mapping the dark matter halo of early-type galaxy NGC 2974 through orbit-based models with combined stellar and cold gas kinematics [PDF]

open access: yes, 2019
We present an orbit-based method of combining stellar and cold gas kinematics to constrain the dark matter profile of early-type galaxies. We apply this method to early-type galaxy NGC 2974, using Pan-STARRS imaging and SAURON stellar kinematics to model the stellar orbits, and introducing HI kinematics from VLA observation as a tracer of the ...
arxiv   +1 more source

A Gemini/GMOS Study of Intermediate Luminosity Early-Type Virgo Cluster Galaxies. I. Globular Cluster and Stellar Kinematics

open access: yes, 2015
We present a kinematic analysis of the globular cluster systems and diffuse stellar light of four intermediate luminosity (sub-$L^{\ast}$) early-type galaxies in the Virgo cluster based on Gemini/GMOS data.
Blakeslee, John P.   +12 more
core   +2 more sources

Distinguishing `disks' from `mergers': tracing the kinematic asymmetries in local (U)LIRGs using `kinemetry'-based criteria [PDF]

open access: yesA&A 591, A85 (2016), 2016
The kinematic characterization of different galaxy populations is a key observational input to distinguish between different galaxy evolutionary scenarios, since it helps to determine the number ratio of rotating disks to mergers at different cosmic epochs.
arxiv   +1 more source

The Two-fold Role of Observables in Classical and Quantum Kinematics [PDF]

open access: yes, 2017
Observables have a dual nature in both classical and quantum kinematics: they are at the same time \emph{quantities}, allowing to separate states by means of their numerical values, and \emph{generators of transformations}, establishing relations between
Zalamea, Federico
core   +2 more sources

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